do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
PORSCHE IN THE PARK - PRODUCT SHOP
Welcome to our parts website. We are delighted to be able to provide you access to thousands of competitively priced Porsche Parts.
Engine Parts
Performance cooling parts
Brakes
Quality brake power
Gearbox & Transmission
Power under the hood
Electrical & Relays
Lighting fast responseSub5 Porsche shop is available worldwide. Our parts shop is fulfilled by UK's premier Porsche Parts supplier, Design911.
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
The BOSCH RIGHT Lambda Oxygen Sensor, In Front Of Catalyst is a premium OEM-quality engine management and emissions control sensor manufactured by Bosch, designed to monitor oxygen levels in the exhaust gases before they enter the catalytic converter on the right-hand exhaust bank. Also known as an upstream oxygen sensor or pre-catalyst lambda sensor, it is essential for maintaining the correct air-fuel mixture and ensuring efficient engine operation.
Fits:
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Diagram Ref No 34
The sensor continuously analyses the oxygen content of exhaust gases and sends real-time data to the engine control unit (ECU). The ECU uses this information to precisely adjust fuel injection and combustion parameters, helping to maximise engine performance, fuel efficiency, and emissions control. Built to Bosch's exacting standards, this sensor delivers fast response times, accurate readings, and long-lasting reliability.
What This Product Does:
- Monitors oxygen levels in exhaust gases before the catalytic converter
- Provides real-time feedback to the engine control unit (ECU)
- Helps regulate the air-fuel mixture for optimum combustion efficiency
- Supports engine performance and throttle response
- Improves fuel economy through precise fuel management
- Reduces harmful emissions and supports catalytic converter efficiency
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Poor fuel economy
- Rough idle or unstable engine operation
- Reduced engine performance and acceleration
- Engine hesitation or sluggish throttle response
- Increased exhaust emissions
- Failed emissions or MOT tests
- Oxygen sensor-related fault codes stored in the ECU
Why Replacement Matters:
- Restores accurate air-fuel ratio monitoring
- Improves fuel economy and combustion efficiency
- Enhances engine performance and throttle response
- Reduces harmful exhaust emissions
- Supports proper catalytic converter operation and longevity
- Prevents persistent engine management warning lights
- Helps maintain emissions compliance and MOT readiness
- Ensures reliable communication between the sensor and ECU for optimal engine operation
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A260618304
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Rennen ITBs for Air-Cooled Porsche 964 - Advanced Roller Barrel Individual Throttle Bodies
The Rennen ITBs by JSR represent the next generation of
individual throttle body technology for air-cooled Porsche 964 engines.
Designed and engineered specifically to extract optimal performance from
classic Porsche flat-six engines, these innovative roller barrel throttle
bodies deliver exceptional airflow, sharper throttle response, and improved
engine efficiency compared to conventional butterfly valve throttle body
systems.
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Developed through extensive research, flow simulation analysis and real-world testing, the Rennen ITB system provides a premium induction solution for performance-focused Porsche enthusiasts, restorers, track-day drivers and motorsport applications.
Whether you are building a high-performance Porsche 911 engine or converting a classic air-cooled Porsche to modern EFI, Rennen ITBs by JSR offer a significant advancement in intake technology.
Why Choose Rennen Roller Barrel ITBs?
Unlike traditional individual throttle bodies that utilise a butterfly valve positioned directly in the airflow path, the Rennen ITB system features a precision-engineered tapered roller barrel design.
This innovative approach provides several key advantages:
Unrestricted Airflow
The roller barrel design eliminates the butterfly valve obstruction found in conventional throttle bodies. With no throttle plate disrupting airflow, air moves more efficiently into the engine, improving volumetric efficiency and overall performance.
Increased Air Velocity
Because there is no butterfly valve occupying space within the throttle bore, the throttle body diameter can be optimised to maintain higher air velocity. Higher intake air speed promotes superior cylinder filling and enhanced engine response throughout the rev range.
Superior Fuel Atomisation
At partial throttle openings, airflow passes directly over the fuel injector. This promotes exceptional atomisation of the air-fuel mixture, improving combustion efficiency, drivability and throttle progression.
Instant Throttle Response
The short distance between the roller barrel and the inlet valve creates a highly responsive induction system, delivering immediate engine response and a direct connection between driver input and engine output.
The ITB kit comes with the ITBs mounted on intake
manifolds and with fuel rails made for the EV6 injector type.
Advanced Flow Simulation & Development
Extensive computational fluid dynamics (CFD) analysis and development testing have been carried out to optimise every aspect of the Rennen ITB design.
Flow simulation data demonstrates:
- Direct airflow over the fuel injector during part-throttle operation.
- Significantly reduced turbulence around the injector area compared to traditional butterfly throttle bodies.
- Up to 20% less airflow restriction at full throttle when compared with conventional ITB systems.
- Improved airflow consistency across all cylinders for enhanced engine balance and performance.
The result is a highly efficient induction system capable of supporting both fast road and high-performance motorsport applications.
Premium Motorsport-Grade Construction
Every Rennen ITB by JSR system is manufactured to the highest standards using precision CNC machining and premium materials.
Precision CNC Machined
All components are machined from high-grade 6082-T6 aluminium to ensure exceptional dimensional accuracy and durability.
Perfect Airflow Distribution
Tight manufacturing tolerances ensure evenly distributed airflow across all throttle bodies, promoting balanced cylinder performance and simplified engine tuning.
Easy Synchronisation
The robust design incorporates minimal joints and connections, allowing straightforward throttle synchronisation and reducing the need for ongoing adjustment.
Long-Term Reliability
Throttle barrels are mounted within sealed ball bearings for smooth operation, durability and long service life under demanding conditions.
Premium Sealing Technology
All sealing surfaces utilise Viton O-rings to prevent false air entry and maintain optimal engine performance.
Quality Components Throughout
Only premium bearings, rod ends and stainless-steel fasteners are used throughout the assembly, ensuring reliability and durability in both road and track environments.
Hard Anodised Finish - Available in Gun Metal or Black Finish
All aluminium components receive a hard anodised gunmetal
grey finish, providing corrosion resistance and an attractive
motorsport inspired appearance.
Specification
Fuel Rails machined for EV6 injector type
3 bolt inlet manifold to cylinder head mounting
50mm velocity stack ID
120mm velocity stack length
The Ultimate Porsche Individual Throttle Body Upgrade
For enthusiasts seeking the ultimate air-cooled Porsche induction system, Rennen ITBs by JSR combine cutting-edge engineering, advanced airflow technology and premium construction quality. The innovative roller barrel design delivers exceptional throttle response, improved airflow efficiency, enhanced fuel atomisation and proven performance gains.
Upgrade your Porsche 911 with one of the most advanced individual throttle body systems available and experience a new level of engine responsiveness, drivability and performance
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
The BOSCH RIGHT Lambda Oxygen Sensor, In Front Of Catalyst is a premium OEM-quality engine management and emissions control sensor manufactured by Bosch, designed to monitor oxygen levels in the exhaust gases before they enter the catalytic converter on the right-hand exhaust bank. Also known as an upstream oxygen sensor or pre-catalyst lambda sensor, it plays a critical role in regulating the air-fuel mixture for efficient combustion and optimal engine performance.
Fits:
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Diagram Ref No 28
The sensor continuously measures oxygen content in the exhaust stream and sends real-time data to the engine control unit (ECU). Using this information, the ECU adjusts fuel injection parameters to maintain the ideal air-fuel ratio, helping maximise power output, fuel efficiency, and emissions control. Manufactured to Bosch's exacting standards, this sensor provides fast response times, accurate readings, and long-lasting reliability.
What This Product Does:
- Monitors oxygen levels in exhaust gases before the catalytic converter
- Provides real-time feedback to the engine control unit (ECU)
- Helps regulate the air-fuel mixture for optimum combustion
- Supports engine performance, fuel efficiency, and throttle response
- Reduces exhaust emissions through accurate fuel control
- Ensures efficient operation of the catalytic converter
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Poor fuel economy
- Rough idle or unstable engine running
- Reduced engine power and acceleration
- Engine hesitation or sluggish throttle response
- Increased exhaust emissions Failed emissions or MOT tests
- Oxygen sensor-related fault codes stored in the ECU
Why Replacement Matters:
- Restores accurate air-fuel ratio monitoring
- Improves fuel economy and combustion efficiency
- Enhances engine performance and throttle response
- Reduces harmful exhaust emissions
- Supports proper catalytic converter function and longevity
- Prevents unnecessary engine management warning lights
- Helps maintain emissions compliance and MOT readiness
- Ensures reliable communication between the sensor and ECU for optimum engine operation
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B906203F
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
The BOSCH Lambda Oxygen Sensor, In Front Of Catalyst is a premium OEM-quality engine management and emissions control sensor manufactured by Bosch, designed to monitor the oxygen content of exhaust gases before they enter the catalytic converter. Also known as an upstream oxygen sensor or pre-catalyst lambda sensor, it plays a crucial role in regulating the engine's air-fuel mixture for optimal combustion efficiency.
Fits:
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Diagram Ref No 29
The sensor continuously measures oxygen levels in the exhaust stream and sends real-time data to the engine control unit (ECU). The ECU then adjusts fuel injection parameters to maintain the ideal air-fuel ratio, improving engine performance, fuel economy, and emissions control. Manufactured to Bosch's exacting standards, this sensor provides accurate readings, rapid response times, and long-term reliability.
What This Product Does:
- Monitors oxygen levels in exhaust gases before the catalytic converter
- Provides real-time feedback to the engine control unit (ECU)
- Helps regulate the air-fuel mixture for efficient combustion
- Supports engine performance and throttle response
- Improves fuel economy and emissions control
- Ensures optimal catalytic converter operation
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Poor fuel economy Rough idle or unstable engine operation
- Reduced engine performance and acceleration
- Engine hesitation or sluggish throttle response
- Increased exhaust emissions Failed emissions or MOT tests
- Oxygen sensor-related fault codes stored in the ECU
Why Replacement Matters:
- Restores accurate air-fuel ratio monitoring
- Improves fuel economy and combustion efficiency
- Enhances engine performance and throttle response
- Reduces harmful exhaust emissions
- Supports proper catalytic converter operation and longevity
- Prevents unnecessary engine management warning lights
- Helps maintain emissions compliance and MOT readiness
- Ensures reliable communication between the sensor and ECU for optimum engine operation
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B906203D
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
The BOSCH Lambda Sensor, After Catalytic Converter is an OEM-quality emissions control sensor designed to monitor the oxygen content of exhaust gases after they have passed through the catalytic converter. Commonly referred to as a post-catalyst oxygen sensor, it provides vital feedback to the engine control unit (ECU) regarding catalytic converter efficiency and overall emissions system performance.
Fits:
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
Diagram Ref No 6
Located downstream of the catalytic converter, the BOSCH sensor continuously measures residual oxygen levels in the exhaust stream. This allows the ECU to evaluate catalyst effectiveness, detect emissions-related faults, and ensure the vehicle operates within manufacturer emissions specifications. It delivers accurate readings, reliable performance, and long service life.
What This Product Does:
- Monitors oxygen levels in exhaust gases after the catalytic converter
- Measures catalytic converter efficiency and performance
- Provides real-time data to the engine control unit (ECU)
- Supports emissions control system diagnostics and monitoring
- Helps maintain compliance with emissions regulations
- Assists in identifying catalyst and exhaust system faults
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Catalytic converter efficiency fault codes
- Failed emissions or MOT tests
- Increased exhaust emissions
- Oxygen sensor-related diagnostic trouble codes (DTCs)
- Engine management warning messages
- Incorrect catalytic converter monitoring data
- Potential reduction in fuel economy in some applications
Why Replacement Matters:
- Restores precise exhaust oxygen monitoring
- Ensures accurate catalytic converter efficiency assessment
- Helps maintain emissions compliance and MOT readiness
- Prevents persistent engine management warning lights
- Supports correct operation of the emissions control system
- Allows early detection of catalyst and exhaust-related issues
- Reduces harmful exhaust emissions
- Maintains long-term reliability of the engine management and emissions systems
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
8K0906262G
The product you are viewing cross references to these numbers
.jpg){kind=link}
.jpg){kind=link}
.jpg){kind=link}
.jpg){kind=link}
.jpg){kind=link}
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
The Lambda Sensor, After Catalytic Converter is an OEM-quality emissions control sensor designed to monitor the oxygen content of exhaust gases after they have passed through the catalytic converter. Commonly referred to as a post-catalyst oxygen sensor, it provides vital feedback to the engine control unit (ECU) regarding catalytic converter efficiency and overall emissions system performance.
Fits:
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
Diagram Ref No 6
Located downstream of the catalytic converter, the sensor continuously measures residual oxygen levels in the exhaust stream. This allows the ECU to evaluate catalyst effectiveness, detect emissions-related faults, and ensure the vehicle operates within manufacturer emissions specifications. Manufactured to OEM standards, it delivers accurate readings, reliable performance, and long service life.
What This Product Does:
- Monitors oxygen levels in exhaust gases after the catalytic converter
- Measures catalytic converter efficiency and performance
- Provides real-time data to the engine control unit (ECU)
- Supports emissions control system diagnostics and monitoring
- Helps maintain compliance with emissions regulations
- Assists in identifying catalyst and exhaust system faults
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Catalytic converter efficiency fault codes
- Failed emissions or MOT tests
- Increased exhaust emissions
- Oxygen sensor-related diagnostic trouble codes (DTCs)
- Engine management warning messages
- Incorrect catalytic converter monitoring data
- Potential reduction in fuel economy in some applications
Why Replacement Matters:
- Restores precise exhaust oxygen monitoring
- Ensures accurate catalytic converter efficiency assessment
- Helps maintain emissions compliance and MOT readiness
- Prevents persistent engine management warning lights
- Supports correct operation of the emissions control system
- Allows early detection of catalyst and exhaust-related issues
- Reduces harmful exhaust emissions
- Maintains long-term reliability of the engine management and emissions systems
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
8K0906262G
The product you are viewing cross references to these numbers
.jpg){kind=link}
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
RIGHT Lambda Sensor, AFTER Catalytic Converter.
The BOSCH RIGHT Lambda Sensor, After Catalytic Converter is an OEM-quality emissions control sensor designed to monitor the oxygen content of exhaust gases after they pass through the catalytic converter on the right-hand exhaust bank. Also known as a post-catalyst oxygen sensor, it provides continuous feedback to the engine control unit (ECU) to evaluate catalytic converter efficiency and ensure the emissions control system is operating correctly.
Fits:
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Diagram Ref No 30
Located downstream of the catalytic converter, this BOSCH sensor measures residual oxygen levels in the exhaust stream, allowing the ECU to monitor catalyst performance, detect emissions-related faults, and maintain compliance with environmental regulations. It delivers accurate readings, reliable operation, and long-term durability.
What This Product Does:
- Monitors oxygen levels in exhaust gases after the catalytic converter
- Measures catalytic converter efficiency on the right exhaust bank
- Provides real-time emissions data to the engine control unit (ECU)
- Supports emissions control system diagnostics and monitoring
- Helps maintain compliance with emissions regulations
- Assists in identifying catalytic converter and exhaust system faults
- Check engine light illumination
- Catalytic converter efficiency fault codes
- Failed emissions or MOT tests
- Oxygen sensor-related diagnostic trouble codes (DTCs)
- Increased exhaust emissions
- Engine management warning messages
- Incorrect catalytic converter monitoring data
- Potential reduction in fuel economy in some applications
Why Replacement Matters:
- Restores precise exhaust oxygen monitoring
- Ensures accurate catalytic converter efficiency assessment
- Helps maintain emissions compliance and MOT readiness
- Prevents persistent engine management warning lights
- Supports proper operation of the emissions control system
- Allows early detection of catalyst and exhaust-related issues
- Reduces harmful exhaust emissions
- Maintains long-term reliability and performance of the engine management system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B906203G
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
RIGHT Lambda Sensor, AFTER Catalytic Converter.
The RIGHT Lambda Sensor, After Catalytic Converter is an OEM-quality emissions control sensor designed to monitor the oxygen content of exhaust gases after they pass through the catalytic converter on the right-hand exhaust bank. Also known as a post-catalyst oxygen sensor, it provides continuous feedback to the engine control unit (ECU) to evaluate catalytic converter efficiency and ensure the emissions control system is operating correctly.
Fits:
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Diagram Ref No 30
Located downstream of the catalytic converter, this sensor measures residual oxygen levels in the exhaust stream, allowing the ECU to monitor catalyst performance, detect emissions-related faults, and maintain compliance with environmental regulations. Manufactured to OEM specifications, it delivers accurate readings, reliable operation, and long-term durability.
What This Product Does:
- Monitors oxygen levels in exhaust gases after the catalytic converter
- Measures catalytic converter efficiency on the right exhaust bank
- Provides real-time emissions data to the engine control unit (ECU)
- Supports emissions control system diagnostics and monitoring
- Helps maintain compliance with emissions regulations
- Assists in identifying catalytic converter and exhaust system faults
- Check engine light illumination
- Catalytic converter efficiency fault codes
- Failed emissions or MOT tests
- Oxygen sensor-related diagnostic trouble codes (DTCs)
- Increased exhaust emissions
- Engine management warning messages
- Incorrect catalytic converter monitoring data
- Potential reduction in fuel economy in some applications
Why Replacement Matters:
- Restores precise exhaust oxygen monitoring
- Ensures accurate catalytic converter efficiency assessment
- Helps maintain emissions compliance and MOT readiness
- Prevents persistent engine management warning lights
- Supports proper operation of the emissions control system
- Allows early detection of catalyst and exhaust-related issues
- Reduces harmful exhaust emissions
- Maintains long-term reliability and performance of the engine management system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B906203G
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Rennen ITBs for Air-Cooled Porsche 964 - Advanced Roller Barrel Individual Throttle Bodies
The Rennen ITBs by JSR represent the next generation of
individual throttle body technology for air-cooled Porsche 964 engines.
Designed and engineered specifically to extract optimal performance from
classic Porsche flat-six engines, these innovative roller barrel throttle
bodies deliver exceptional airflow, sharper throttle response, and improved
engine efficiency compared to conventional butterfly valve throttle body
systems.
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Developed through extensive research, flow simulation analysis and real-world testing, the Rennen ITB system provides a premium induction solution for performance-focused Porsche enthusiasts, restorers, track-day drivers and motorsport applications.
Whether you are building a high-performance Porsche 911 engine or converting a classic air-cooled Porsche to modern EFI, Rennen ITBs by JSR offer a significant advancement in intake technology.
Why Choose Rennen Roller Barrel ITBs?
Unlike traditional individual throttle bodies that utilise a butterfly valve positioned directly in the airflow path, the Rennen ITB system features a precision-engineered tapered roller barrel design.
This innovative approach provides several key advantages:
Unrestricted Airflow
The roller barrel design eliminates the butterfly valve obstruction found in conventional throttle bodies. With no throttle plate disrupting airflow, air moves more efficiently into the engine, improving volumetric efficiency and overall performance.
Increased Air Velocity
Because there is no butterfly valve occupying space within the throttle bore, the throttle body diameter can be optimised to maintain higher air velocity. Higher intake air speed promotes superior cylinder filling and enhanced engine response throughout the rev range.
Superior Fuel Atomisation
At partial throttle openings, airflow passes directly over the fuel injector. This promotes exceptional atomisation of the air-fuel mixture, improving combustion efficiency, drivability and throttle progression.
Instant Throttle Response
The short distance between the roller barrel and the inlet valve creates a highly responsive induction system, delivering immediate engine response and a direct connection between driver input and engine output.
The ITB kit comes with the ITBs mounted on intake
manifolds and with fuel rails made for the EV6 injector type.
Advanced Flow Simulation & Development
Extensive computational fluid dynamics (CFD) analysis and development testing have been carried out to optimise every aspect of the Rennen ITB design.
Flow simulation data demonstrates:
- Direct airflow over the fuel injector during part-throttle operation.
- Significantly reduced turbulence around the injector area compared to traditional butterfly throttle bodies.
- Up to 20% less airflow restriction at full throttle when compared with conventional ITB systems.
- Improved airflow consistency across all cylinders for enhanced engine balance and performance.
The result is a highly efficient induction system capable of supporting both fast road and high-performance motorsport applications.
Premium Motorsport-Grade Construction
Every Rennen ITB by JSR system is manufactured to the highest standards using precision CNC machining and premium materials.
Precision CNC Machined
All components are machined from high-grade 6082-T6 aluminium to ensure exceptional dimensional accuracy and durability.
Perfect Airflow Distribution
Tight manufacturing tolerances ensure evenly distributed airflow across all throttle bodies, promoting balanced cylinder performance and simplified engine tuning.
Easy Synchronisation
The robust design incorporates minimal joints and connections, allowing straightforward throttle synchronisation and reducing the need for ongoing adjustment.
Long-Term Reliability
Throttle barrels are mounted within sealed ball bearings for smooth operation, durability and long service life under demanding conditions.
Premium Sealing Technology
All sealing surfaces utilise Viton O-rings to prevent false air entry and maintain optimal engine performance.
Quality Components Throughout
Only premium bearings, rod ends and stainless-steel fasteners are used throughout the assembly, ensuring reliability and durability in both road and track environments.
Hard Anodised Finish - Available in Gun Metal or Black Finish
All aluminium components receive a hard anodised gunmetal
grey finish, providing corrosion resistance and an attractive
motorsport inspired appearance.
Specification
Fuel Rails machined for EV6 injector type
3 bolt inlet manifold to cylinder head mounting
48mm velocity stack ID
120mm velocity stack length
The Ultimate Porsche Individual Throttle Body Upgrade
For enthusiasts seeking the ultimate air-cooled Porsche induction system, Rennen ITBs by JSR combine cutting-edge engineering, advanced airflow technology and premium construction quality. The innovative roller barrel design delivers exceptional throttle response, improved airflow efficiency, enhanced fuel atomisation and proven performance gains.
Upgrade your Porsche 911 with one of the most advanced individual throttle body systems available and experience a new level of engine responsiveness, drivability and performance
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
The BOSCH LEFT Lambda Sensor, After Catalytic Converter is an emissions control sensor designed to monitor oxygen levels in the exhaust gases after they have passed through the catalytic converter on the left-hand exhaust bank. Also known as a post-catalyst oxygen sensor, it provides critical feedback to the engine control unit (ECU) to evaluate catalytic converter efficiency and ensure the emissions system is functioning correctly.
Fits:
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Diagram Ref No 31
Positioned downstream of the catalytic converter, this BOSCH sensor continuously measures residual oxygen content in the exhaust stream, allowing the ECU to monitor catalyst performance, detect faults, and maintain compliance with emissions regulations. It delivers accurate readings, reliable operation, and long service life.
What This Product Does:
- Monitors oxygen levels in exhaust gases after the catalytic converter
- Measures catalytic converter efficiency on the left exhaust bank
- Provides real-time emissions data to the engine control unit (ECU)
- Supports emissions control system monitoring and diagnostics
- Helps ensure compliance with environmental regulations
- Assists in identifying catalytic converter and exhaust system faults
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Catalytic converter efficiency fault codes
- Failed emissions or MOT tests
- Oxygen sensor-related diagnostic trouble codes (DTCs)
- Increased exhaust emissions
- Engine management warning messages
- Incorrect catalytic converter monitoring data
- Potential reduction in fuel economy in some applications
Why Replacement Matters:
- Restores precise exhaust oxygen monitoring
- Ensures accurate catalytic converter efficiency assessment
- Helps maintain emissions compliance and MOT readiness
- Prevents persistent engine management warning lights
- Supports proper operation of the emissions control system
- Allows early detection of catalyst and exhaust-related issues
- Reduces harmful exhaust emissions
- Maintains long-term reliability and performance of the engine management system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B906203E
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
The LEFT Lambda Sensor, After Catalytic Converter is an OEM-quality emissions control sensor designed to monitor oxygen levels in the exhaust gases after they have passed through the catalytic converter on the left-hand exhaust bank. Also known as a post-catalyst oxygen sensor, it provides critical feedback to the engine control unit (ECU) to evaluate catalytic converter efficiency and ensure the emissions system is functioning correctly.
Fits:
- Porsche 95B.1 Macan S Petrol 3.0L V6 (340Bhp) 2014-18
- Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
- Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18
Diagram Ref No 31
Positioned downstream of the catalytic converter, this sensor continuously measures residual oxygen content in the exhaust stream, allowing the ECU to monitor catalyst performance, detect faults, and maintain compliance with emissions regulations. Manufactured to OEM specifications, it delivers accurate readings, reliable operation, and long service life.
What This Product Does:
- Monitors oxygen levels in exhaust gases after the catalytic converter
- Measures catalytic converter efficiency on the left exhaust bank
- Provides real-time emissions data to the engine control unit (ECU)
- Supports emissions control system monitoring and diagnostics
- Helps ensure compliance with environmental regulations
- Assists in identifying catalytic converter and exhaust system faults
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Catalytic converter efficiency fault codes
- Failed emissions or MOT tests
- Oxygen sensor-related diagnostic trouble codes (DTCs)
- Increased exhaust emissions
- Engine management warning messages
- Incorrect catalytic converter monitoring data
- Potential reduction in fuel economy in some applications
Why Replacement Matters:
- Restores precise exhaust oxygen monitoring
- Ensures accurate catalytic converter efficiency assessment
- Helps maintain emissions compliance and MOT readiness
- Prevents persistent engine management warning lights
- Supports proper operation of the emissions control system
- Allows early detection of catalyst and exhaust-related issues
- Reduces harmful exhaust emissions
- Maintains long-term reliability and performance of the engine management system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95B906203E
The product you are viewing cross references to these numbers
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
The BOSCH Lambda Sensor, After Catalytic Converter is a critical emissions control component designed to monitor the oxygen content of exhaust gases after they pass through the catalytic converter. Also known as a post-catalyst oxygen sensor, it provides continuous feedback to the engine control unit (ECU) to assess catalytic converter efficiency and ensure the emissions control system is operating correctly.
Sold Each.
x2 Required Per Car.
Fits:
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Diagram Ref No 24
This BOSCH sensor accurately measures residual oxygen levels in the exhaust stream, allowing the ECU to monitor catalyst performance and identify potential emissions-related issues. It plays a vital role in maintaining emissions compliance, engine management efficiency, and overall vehicle reliability.
What This Product Does:
- Monitors oxygen levels in exhaust gases after the catalytic converter
- Measures catalytic converter efficiency and effectiveness
- Provides real-time data to the engine control unit (ECU)
- Supports emissions control system monitoring and diagnostics
- Helps ensure compliance with emissions regulations
- Assists in detecting catalytic converter and exhaust system faults
Symptoms Of Wear Or Failure:
- Check engine light illumination
- Catalytic converter efficiency fault codes
- Failed emissions or MOT inspections
- Increased exhaust emissions
- Reduced fuel economy in some cases
- Engine management warning messages
- Oxygen sensor-related diagnostic trouble codes (DTCs)
- Inaccurate catalytic converter monitoring data
Why Replacement Matters:
- Restores precise exhaust oxygen measurement
- Ensures correct catalytic converter efficiency monitoring
- Helps maintain emissions compliance and MOT readiness
- Prevents persistent engine management warning lights
- Supports proper ECU diagnostics and emissions system operation
- Allows accurate detection of catalyst-related faults
- Reduces harmful exhaust emissions
- Maintains long-term reliability and performance of the emissions control system
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A160619181
The product you are viewing cross references to these numbers