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 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- 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
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 914 (1970-1976)
This OE MATCH camshaft sprocket kit includes the essential components required for the camshaft timing drive system in classic Porsche engines. The kit typically comprises the camshaft sprocket(s) along with the necessary hardware to ensure secure installation and precise alignment within the timing chain assembly.
Kit Contents:
x2 Camshaft Sprocket Flange (90110558302/1)
x2 Camshaft Sprocket (90110554604/1)
x2 Camshaft Sprocket Straight Pin (90024300100)
x2 Woodruff Key (N0127082)
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- 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
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 914 (1970-1976)
Diagram Ref No 7, 8, 9, 12
What This Product Does:
- Driving the camshaft via the timing chain
- Synchronising camshaft and crankshaft rotation
- Ensuring correct valve opening and closing timing
- Maintaining engine performance and efficiency
Symptoms Of Wear Or Failure:
- Rattling noise from the timing chain area
- Engine timing irregularities
- Reduced engine performance or power loss
- Difficulty maintaining correct timing during engine setup
- Visible wear or damage on sprocket teeth
Why Replacement Matters:
- Ensures precise camshaft timing and engine synchronisation
- Prevents timing chain slippage or misalignment
- Improves engine performance and efficiency
- Reduces wear on the timing chain and related components
- Essential for safe and reliable engine rebuilds
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SPROCKETKIT911
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Sold each
Fits:
Porsche 356B / 356C - 1960 to 1965
Porsche 911 - 1978 to 1989
Porsche 924S - 1986 to 1988
Porsche 944 - 1985 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90007437201
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Adjustable Camshaft Sprocket - Precision Cam Timing Adjustment for Performance and Reliability
This adjustable camshaft sprocket is designed for Porsche
924S, 944 2.5 8V and 944 Turbo models. It allows precise adjustment of camshaft
timing to optimise torque delivery, correct timing deviation after engine work
and enhance overall driving characteristics.
Fits:
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Diagram Ref No 17
Engineered as a direct replacement for the original cam pulley, it installs easily and includes a new key and camshaft bolt for safe assembly.
What an Adjustable Camshaft Sprocket Does
The camshaft sprocket controls the timing relationship
between the crankshaft and camshaft. By adjusting cam timing, you influence
when the valves open and close relative to piston position.
This affects:
- Torque delivery
- Throttle response
- Powerband characteristics
- Maximum horsepower
- Engine drivability
By advancing or retarding the camshaft timing, you can shift the torque band higher or lower in the RPM range depending on your intended use.
Adjustability Range and Features
- Adjustable from -4° to +5° camshaft timing
- Degree markings for accurate setting
- Original zero position retained +3° to +4° is typically ideal for most street setups
- Maximum adjustment range prevents valve-to-piston contact
- Adjustment possible while mounted on the camshaft
- No need to modify the distribution cover
- Safe to tune without a rolling road
The designed adjustment range ensures you cannot rotate the sprocket far enough to cause engine damage under normal use.
Why You May Want to Upgrade
Correct Timing After Head Work
Many Porsche 924S and 944 engines have had cylinder heads skimmed during overhaul. When material is removed, the head sits lower, slightly retarding cam timing. This adjustable sprocket allows you to correct timing precisely and restore factory performance.
Compensate for Manufacturing Variations
Even factory sprockets can vary slightly in keyway positioning. This gear allows fine correction for accurate timing alignment.
Performance Tuning
If you are running:
- A performance camshaft
- Engine modifications
- Increased boost on a Turbo
- Higher compression setup
An adjustable camshaft sprocket becomes essential for optimising performance.
Street vs Racing Setup
For street use:
Advancing the cam (+3° to +4°) increases torque in the 2000 to 3500 RPM range,
improving daily drivability and throttle response.
For racing use:
Retarding or advancing timing toward +5° can move peak torque higher in the RPM
range for greater top-end performance.
You can safely experiment and feel the difference without needing a dyno session.
Superior Construction and Durability
This sprocket uses the original toothed outer design to maintain correct belt engagement but improves the internal core strength.
Key upgrades include:
- High-quality steel core stronger than original
- Reinforced keyway to prevent tearing under load
- TriPass Yellow Special galvanised coating for corrosion resistance
- Four high-strength 10.9 M8 Allen bolts for secure clamping
- Cleanly centred for smooth rotation
The original sprocket’s common weak point was the keyway, which could fail under poor assembly or high stress. This upgraded version significantly improves durability.
Package Contents
- Adjustable camshaft sprocket
- New original key
- New camshaft bolt
- User manual (in Dutch)
Reusing old keys or bolts can lead to failure, which is why new components are supplied.
Key Benefits at a Glance
- Adjustable cam timing from -4° to +5° Safe adjustment range prevents valve damage
- Ideal after cylinder head machining Improves torque and drivability
- Suitable for street and racing use
- Stronger core and reinforced keyway
- Corrosion-resistant finish
- Direct replacement with easy assembly
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9441055451T
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
944 2-in-1 Performance Cam Wheel (+2° / +4°)
Unlock additional performance from your Porsche 944 engine with this innovative 2-in-1 Performance Cam Wheel, engineered to optimise camshaft timing and deliver measurable improvements in both torque and horsepower. Featuring two pre-set timing advance positions (+2° and +4°) within a single camshaft sprocket, this clever design allows owners to tailor engine characteristics for either road or track use without the complexity or expense of a fully adjustable cam gear.
Fits:
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Diagram Ref No 17
By simply rotating the cam wheel 180 degrees during installation, you can select either the +2° or +4° timing position, making this a cost-effective performance upgrade that offers greater flexibility than a standard replacement camshaft wheel.
Even better, the price is lower than many genuine replacement camshaft sprockets while delivering real-world performance gains proven on the rolling road.
Why Adjust Camshaft Timing?
The camshaft and crankshaft work together through the timing belt to control valve opening and closing events. While Porsche factory timing settings provide a good balance for production vehicles, they are often no longer optimal after years of service or engine rebuilding.
Several factors can alter the original camshaft timing:
Cylinder Head Resurfacing
During engine rebuilds, cylinder heads are often skimmed to restore flatness. Many Porsche 944 engines have had this procedure performed multiple times throughout their lives.
Each resurfacing operation slightly alters the relationship between the crankshaft and camshaft, affecting valve timing and engine efficiency.
Hydraulic Tappet Wear
Over time, natural wear and operational changes within the hydraulic tappets can influence valve timing characteristics, reducing engine responsiveness and performance.
Manufacturing Tolerances
Even when new, production tolerances can result in small variations in camshaft timing from engine to engine.
This performance cam wheel compensates for these variables by subtly repositioning the camshaft relative to the crankshaft, advancing intake valve opening events to improve cylinder filling and increase engine output.
Dyno-Proven Performance Gains
Extensive rolling road testing has demonstrated clear performance improvements over the original factory camshaft timing.
+4° Setting
The +4° position provides the greatest torque increase in the lower and mid-range rev band.
Benefits include:
- Up to 10 Nm increase in torque
- Improved acceleration
- Stronger mid-range response
- Enhanced road driving characteristics
- Improved flexibility during everyday driving
Peak gains are achieved up to approximately 5000 RPM.
+2° Setting
The +2° position also produces a significant torque increase but is optimised for higher engine speeds.
Benefits include:
- Improved upper RPM performance
- Increased peak horsepower
- Strong high-rev power delivery
- Enhanced track performance
- Improved top-end engine response
Above approximately 5000 RPM, the +2° setting delivers the strongest horsepower gains.
Which Setting Should You Choose?
+4° Position – Ideal for Road Cars
The +4° setting is recommended for:
- Fast road use
- Daily driving
- Touring
- Improved drivability
- Enhanced low and mid-range torque
This setting delivers a more responsive engine where it is used most often on the road.
+2° Position – Ideal for Track Use
The +2° setting is recommended for:
- Motorsport applications
- Track days Competition use
- High RPM operation
- Maximum peak horsepower
Drivers seeking ultimate top-end performance will benefit most from this configuration.
Simple Installation
Unlike many performance camshaft timing solutions, this cam wheel retains the original timing reference marks on both sides.
This allows:
- Straightforward installation
- Accurate timing belt alignment
- Easy selection of either timing position
- Factory-style installation procedures
The wheel is designed to fit directly in place of the original component.
Corrosion-Resistant Construction
Manufactured from steel and galvanised for corrosion protection, the cam wheel is built for long-term reliability and durability.
The kit also includes a new locating wedge to ensure accurate positioning and installation.
Package Contents
Supplied complete with:
- 1 x Galvanised Steel Performance Cam Wheel
- 1 x New Camshaft Locating Wedge
Installation Information
Approximate installation time: 1 hour Timing belt removal required Timing belt re-tensioning required after installation Ideal upgrade when replacing the timing belt Suitable to combine with routine maintenance work
Professional installation is recommended if you are unfamiliar with Porsche timing belt procedures.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9441055451T
The product you are viewing cross references to these numbers