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Fuel Lines & Breather Hoses
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
Fits:
Porsche 911 (1974-1983)
Porsche 930 Turbo (1975-1977)
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91120117102
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Fits:
Porsche 911 SC 1980-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135608702
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Fits:
Porsche 911 SC 1980-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135608902
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009313
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009313
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009314
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Sold each - 3 required per car
Fits:
Porsche 911 2.7ltr / 3.0ltr - 1974 to 1980
Diagram ref no 50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009314
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Fits:
Porsche 911T/E/S/RS 1969-1976
Diagram ref no: 5, 6, 7, 8, 9 and 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111002SET
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
This Fuel-Injector Pipe Bracket is a support bracket designed to secure the fuel injection or supply pipes on Porsche 911 models (1969–1977). It firmly anchors the injector lines in place, prevents vibration-induced wear, and ensures correct pipe routing for long-term system integrity.
Fits:
Porsche 911 1969 - 1977
Diagram ref no 11
Manufactured to match the original Porsche design, this bracket installs directly into the factory mounting points and provides durable, OE-type reliability.
• Function: Secures injection or fuel supply pipe to cylinder head or injection pump assembly
• Position: Engine – fuel injection system / cylinder head area
• Benefits: Reinforces fuel line routing, minimizes vibration wear, and maintains proper alignment
Fuel-injection brackets are constantly exposed to engine vibration, heat, and stress. Over time, the original parts can become loose, corroded, or bent, leading to unstable pipe support or even potential fuel leaks.
Replace this bracket when:
• Performing a fuel-injection system service or rebuild
• You observe loose, vibrating, or misaligned injection lines
• The original bracket shows corrosion or distortion
• Re-installing injection plumbing after cylinder head or pump removal
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111033300
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
The Injector pipe bracket is a precision-manufactured support bracket designed to secure the fuel injection or injector supply pipes on Porsche 911 models. This bracket locates the injector line firmly, prevents vibration-induced wear, ensures correct routing, and helps maintain system integrity. Its replicates the factory form, fits directly into the mounting points, and offers dependable durability for OE-type fitment.
Fits:
Porsche 911 1969 - 1977
Diagram ref no 11
• Function: Secures injection or fuel supply pipe to head or pump assembly
• Position: Engine – injection system, cylinder head / injection pump fitting
• Benefits: Reinforces fuel-injection plumbing, prevents vibration wear, ensures proper alignment
Fuel-injection piping and brackets are subject to constant engine vibration, heat, and mechanical stress. Over time the original bracket may become loosened, corroded, bent or fatigued, resulting in unstable pipe support, potential wear, or fuel-leak risk.
Replace this bracket when:
• Performing a fuel-injection system repair or service
• You observe loose or vibrating injection lines
• The original bracket shows corrosion, bending or missing alignment
• Re-installing injection plumbing after head or pump removal
Installing a new Injector Pipe Bracket ensures secure pipe routing, reduced vibration wear, and continued safe operation of the injection system in your Porsche 911.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111033300
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
The Fuel Line for Warm Up Valve is an OEM-spec Porsche fuel line designed for classic air-cooled Porsche 911 models equipped with Bosch CIS / K-Jetronic mechanical fuel injection. This line connects to the warm-up valve / warm-up regulator and plays an essential role in maintaining correct fuel routing and pressure control during cold starts and engine warm-up.
Fits:
- Porsche 911 T-K 1972-1973 2.4L WB (F)
- Porsche 911 1974-1976 2.7L / 1976 3.0 Carrera
Fits On To Diagram Ref No 28
In CIS fuel systems, the warm-up regulator helps manage control pressure so the engine can start cleanly when cold and transition smoothly to normal running conditions as temperatures rise. A properly functioning fuel line is critical to ensure stable pressure and leak-free operation. Over time, original fuel lines can degrade from age, heat exposure, and vibration, leading to cracking, seepage, or weakened fittings.
What This Product Does:
- Carries fuel to/from the warm-up valve / warm-up regulator
- Helps regulate control pressure in CIS injection systems
- Supports smooth cold start operation and warm running performance
- Ensures fuel is delivered through the correct metering path
- Maintains leak-free, correct routing using OEM-style fittings
Symptoms Of A Failing Fuel Line:
- Fuel smell in the engine bay
- Visible fuel seepage or dampness around fittings
- Cracked or aged line material (especially on older CIS cars)
- Hard starting or poor cold running (if pressure is affected)
- Rough idle during warm-up
- Potential fuel leaks creating a fire risk
Why Replacement Matters:
- Prevents dangerous fuel leaks in the engine bay
- Maintains correct CIS fuel pressure regulation for proper drivability
- Supports reliable cold starts and smoother warm-up operation
- Helps avoid engine running issues caused by pressure loss
- Preserves safety and originality in classic Porsche maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009701
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
The Fuel Line for Warm Up Valve is a fuel line designed for classic air-cooled Porsche 911 models equipped with Bosch CIS / K-Jetronic mechanical fuel injection. This line connects to the warm-up valve / warm-up regulator and plays an essential role in maintaining correct fuel routing and pressure control during cold starts and engine warm-up.
Fits:
- Porsche 911 T-K 1972-1973 2.4L LWB (F)
- Porsche 911 1974-1976 2.7L / 1976 3.0 Carrera
Fits On To Diagram Ref No 28
In CIS fuel systems, the warm-up regulator helps manage control pressure so the engine can start cleanly when cold and transition smoothly to normal running conditions as temperatures rise. A properly functioning fuel line is critical to ensure stable pressure and leak-free operation. Over time, original fuel lines can degrade from age, heat exposure, and vibration, leading to cracking, seepage, or weakened fittings.
What This Product Does:
- Carries fuel to/from the warm-up valve / warm-up regulator
- Helps regulate control pressure in CIS injection systems
- Supports smooth cold start operation and warm running performance
- Ensures fuel is delivered through the correct metering path
- Maintains leak-free
Symptoms Of A Failing Fuel Line:
- Fuel smell in the engine bay
- Visible fuel seepage or dampness around fittings
- Cracked or aged line material (especially on older CIS cars)
- Hard starting or poor cold running (if pressure is affected)
- Rough idle during warm-up
- Potential fuel leaks creating a fire risk
Why Replacement Matters:
- Prevents dangerous fuel leaks in the engine bay
- Maintains correct CIS fuel pressure regulation for proper drivability
- Supports reliable cold starts and smoother warm-up operation
- Helps avoid engine running issues caused by pressure loss
- Preserves safety in classic Porsche maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111009701
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Fits:
Porsche 911 SC 1981-83
Click 'Zoom in' for large parts diagram.
Diagram ref no 51
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011049402
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Fuel Line – Mixture Control to Warm-Up Regulator
High-quality replacement fuel line designed for Porsche 911 1974 models equipped with Bosch CIS (K-Jetronic) fuel injection systems.
This line connects the mixture control unit (fuel
distributor) to the warm-up regulator (WUR), playing a critical role
in regulating control pressure within the fuel system. This pressure directly
influences fuel mixture during cold starts and warm-up phases, making this line
essential for proper engine behaviour and drivability.
Fits:
- Porsche 911 S 2.7L 1974-1977
Diagram ref no 62
Manufactured from a high-quality polyamide tube, this fuel line features reinforced polyamide fibres and an additional protective outer sheath, ensuring exceptional durability, pressure resistance, and long-term reliability in demanding engine bay conditions.
Built to OEM specifications, it offers precise fitment and is ideal for maintenance, repair, or full CIS system restoration.
Key Features
• Direct replacement fuel line (mixture control to WUR)
• Suitable for Porsche 911 (1974 – CIS models)
• Manufactured from high-quality reinforced polyamide
• Polyamide fibre reinforcement for strength
• Additional protective outer sheath
• Designed for precise control pressure delivery
• OEM-style fit and performance
Part of a Complete CIS Fuel & Control Pressure System
This line operates within the CIS control pressure circuit, which includes:
• Fuel distributor / mixture control unit
• Warm-up regulator (WUR)
• Fuel pressure lines
• Fuel accumulator
• Injector lines and injectors
Together, these components regulate fuel pressure and mixture, particularly during cold starts and engine warm-up.
Why This Line is Critical
The warm-up regulator relies on accurate pressure signals.
This hose helps to:
• Deliver control pressure from the fuel distributor
• Regulate air-fuel mixture during engine warm-up
• Ensure smooth cold starting and idle stability
• Maintain consistent engine performance
Why Replace CIS Control Pressure Lines
Over time, original lines can degrade or lose integrity.
Common issues include:
• Cracking or ageing of original materials
• Internal restriction affecting pressure regulation
• Fuel leaks under pressure
• Poor cold start performance or unstable idle
Replacing the line restores correct control pressure behaviour and system reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91111050101
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Fuel Pressure Line – Pump to Fuel Accumulator
High-quality replacement fuel pressure line designed for Porsche 911 models from 1976 to 1977, connecting the fuel pump to the fuel accumulator.
This line is a critical component of the Bosch CIS
(Continuous Injection System), delivering pressurised fuel from the pump to the
accumulator, where pressure is stabilised before reaching the injection system.
Proper function is essential for smooth engine operation, reliable starting,
and consistent fuel delivery.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Diagram Ref No 11
Manufactured to OEM specifications, this fuel pressure line ensures precise fitment along with excellent resistance to fuel, heat, and high pressure—making it ideal for maintenance, repair, or restoration of classic Porsche 911 models.
Key Features
• Direct replacement fuel pressure line (pump to
accumulator)
• Suitable for Porsche 911 (1976–1977)
• Designed for CIS fuel injection systems
• Handles high-pressure fuel delivery
• Resistant to fuel, heat, and pressure
• OEM-style fit and performance
Function and Purpose
This fuel line is a vital part of the CIS fuel system.
It helps to:
• Deliver pressurised fuel from the pump to the accumulator
• Stabilise fuel pressure before distribution
• Support consistent engine starting and running
• Maintain proper fuel system operation
Why Replace Your Fuel Pressure Line
Fuel lines in CIS systems are subject to high pressure and heat over time.
Common issues include:
• Cracking or degradation of hose material
• Fuel leaks under pressure
• Loss of system pressure stability
• Hard starting or poor engine performance
Replacing the line restores safe and reliable fuel system function.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135606604
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Fits:
Porsche 911 1974>>1977
Diagram Ref No 72
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91111051403
The product you are viewing cross references to these numbers
-
K - JETRONIC mixture control unit 911 1974-76 107-00
-
K - JETRONIC mixture control unit 911 1977 ONWARDS 107-05
-
Mechanical injection left for Model 911/83 1974-77 107-20
-
Mechanical injection right for Model 911/83 1974-77 107-25
-
fuel system rear K-JETRONIC 911 1975 ONWARDS 201-15
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Tank ventilation 911 UPTO 1974 201-25
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Tank ventilation 911 1975 ONWARDS 201-30
Fuel Lines & Breather Hoses – Reliable Fuel Flow and Ventilation for Porsche Engines
Fuel lines and breather hoses are essential for maintaining safe, consistent, and efficient operation of your Porsche’s fuel and vapour management systems. The fuel lines transport petrol from the tank to the engine, while breather hoses manage pressure and vapour circulation within the fuel system, ensuring smooth refuelling and balanced performance.
At Design911, we supply a complete range of fuel lines, connectors, and breather hoses designed for long-lasting performance, accurate fitment, and durability under high-pressure and high-temperature conditions. Built from fuel-resistant rubber, reinforced composites, or stainless steel, each component ensures secure sealing, corrosion resistance, and reliable fuel delivery for both classic and modern Porsche vehicles.
Whether you’re servicing a classic 911, restoring a transaxle Porsche, or maintaining a performance 992, our manufacturer-quality components guarantee safe, efficient, and leak-free operation.
What Do Fuel Lines and Breather Hoses Do?
Fuel lines and breather hoses play crucial roles in maintaining a balanced and efficient fuel system.
Core Functions:
- Fuel
Lines: Safely transport pressurised fuel from the tank to the
injectors or carburetors.
- Breather
Hoses: Equalise air pressure within the tank and prevent vapour lock
or vacuum formation.
- Vapour
Management: Direct excess vapours back into the intake or carbon
canister for emissions control.
- System Integrity: Maintain proper sealing to avoid leaks, fumes, and performance loss.
A reliable fuel line and breather hose system is essential for optimal fuel delivery, safety, and emissions control.
Why Do Fuel Lines and Breather Hoses Fail?
Over time, these components are exposed to heat, vibration, and corrosive fuels, causing them to deteriorate.
Common Causes of Failure Include:
- Cracking,
hardening, or swelling due to ethanol-based fuels.
- Internal
corrosion or blockage from fuel contamination.
- Age-related
brittleness in rubber or plastic hoses.
- Loose or leaking fittings reducing system pressure.
- External damage from abrasion or heat exposure.
When these parts fail, you may notice fuel odours, leaks,
poor idling, or difficulty refuelling — all signs your Porsche’s fuel
system needs attention.
Why Replace Fuel Lines and Hoses?
Key Benefits:
- Restores proper fuel flow and vapour control.
- Prevents fuel leaks, odours, and emissions faults.
- Improves safety and engine performance.
- Constructed from modern, fuel-resistant materials.
- Direct-fit
installation for Porsche models across all generations.
- Ideal for maintenance, restoration, and upgrades.
Proper maintenance ensures your Porsche’s fuel system remains clean, safe, and efficient — exactly as its performance heritage demands.
Highlights:
- Comprehensive selection of Porsche fuel lines and breather hoses.
- Precision-engineered for accurate fit and durability.
- Resistant to ethanol, heat, and corrosion.
- Supports stable fuel pressure and emissions control.
- Compatible with classic and modern Porsche models.
- Ideal for rebuilds, performance tuning, and preventive maintenance.
-
Fuel Tank & Parts
-
Fuel Filler Cap / Neck / Flap
-
Fuel Gauge / Level Sender
-
Fuel Filter and Fittings
-
Fuel Pumps
-
Pressure Valves / Sensors / Dampers / Regulators
-
Fuel Accumulator
-
Fuel Expansion Tank
-
Carbon Canister
-
Fuel Injectors
-
Fuel Carry Cans
-
Fuel Injection / Collection Rail
-
Fuel Distributor / Metering Head
