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Camshaft gears / sprockets and fixings
By OE Match
- 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 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 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)
Camshaft timing chain sprocket engages with the timing chain to drive the camshaft at the correct speed relative to the crankshaft. It is precisely manufactured to replicate the original sprocket’s profile, tooth count, and material properties so that it performs and fits like the genuine factory part.
Fits:
Porsche 911 1965 - 1989
Diagram ref no 6.
The camshaft chain sprocket works in conjunction with the timing chain and crankshaft sprocket to ensure the camshaft and crankshaft remain correctly synchronised. This synchronisation is crucial for precise valve timing - determining when intake and exhaust valves open and close relative to piston position. Proper timing is essential for efficient combustion, smooth engine performance, and long-term reliability.
The timing chain system is one of the most critical mechanical systems in an internal combustion engine. The sprockets that guide and drive the chain can wear or suffer surface fatigue, which may lead to:
• Timing chain slack or noise
• Inaccurate valve timing
• Engine roughness or power loss
• Increased wear on tensioners and guides.
Worn sprocket teeth can accelerate chain wear and compromise the whole timing train. Replacing the camshaft sprocket restores optimal fit, timing accuracy, and helps protect associated timing components - especially vital on high-mileage or restored classic engines.
Replace the camshaft chain sprocket if you notice:
• Noticeable timing chain noise (rattle at start or idle)
• Timing chain slack or visible elongation
• During full timing chain/tensioner overhaul
• Wear or damage on original sprocket teeth
• Engine running irregularly or rough at idle
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110505502
The product you are viewing cross references to these numbers
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 914 (1970-1976)
Sold each - 2 required per car
Fits:
Porsche 911 1965-81
Porsche 912 1965-69
Porsche 930 1975-81
Porsche 914 1970-76
Diagram ref no 41
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110517200
The product you are viewing cross references to these numbers
- 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)
Material: Steel
Inside Diameter: 30 MM
Fits:
Porsche 911 1965-89
Porsche 930 1978-79
Porsche 914 1970-76
Diagram ref no 36
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110558302
The product you are viewing cross references to these numbers
- 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
This camshaft timing gear is a direct-fit replacement for the factory Porsche drive gear, it ensures accurate chain engagement, quiet operation, and long-term reliability.
Fits: Left or Right, Sold each.
Fits:
Porsche 911 1965 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram ref no 22.
This sprocket (gear) is part of the timing / camshaft drive system, engaging with the timing chain (or drive chain) to convert crankshaft rotational motion into synchronized camshaft motion. It ensures that the camshafts open and close valves at the correct moments relative to piston position, essential for proper combustion, engine efficiency, and emissions. Accurate tooth profile, hardness, and alignment are crucial—improperly manufactured or worn sprockets can lead to timing drift, noise, chain jump, or catastrophic engine damage.
Original stock / old timing gears can wear, fatigue, or lose tooth integrity over time — especially under heat cycles and chain load. A worn or mismatched sprocket may cause timing chain noise (ticking, rattle), timing drift, or—worst case—chain jump or engine damage. An new replacement restores correct tooth geometry, material hardness, and precision alignment, ensuring the timing system operates smoothly and reliably.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110554604
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
MFI Pump Drive Gear on Camshaft, Left
The OE Match MFI pump drive gear is a replacement component
for the left-hand camshaft on Porsche 911 models manufactured between 1969 and
1973 and equipped with mechanical fuel injection (MFI).
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Diagram ref no 18
This gear forms part of the drive system for the Bosch
mechanical fuel injection pump, transferring rotational movement from the left
camshaft to the injection pump through the toothed drive belt.
Correct operation of this drive system is essential for maintaining the mechanical relationship between the engine and fuel injection pump, helping ensure accurate fuel delivery and consistent engine performance.
What Does the MFI Pump Drive Gear Do?
The MFI pump drive gear is mounted on the left-hand camshaft and drives the toothed belt connected to the mechanical fuel injection pump.
As the engine rotates, the camshaft turns the drive gear, which operates the injection pump in synchronisation with the engine.
This allows the mechanical injection system to deliver fuel at the correct point in the engine's operating cycle.
Why Does It Fail?
Although designed for long service life, the drive gear can deteriorate through age, wear or damage.
Common causes include:
- Worn or damaged gear teeth
- Corrosion or surface deterioration
- Incorrect toothed belt tension or alignment
- Damage during engine or injection system repairs
- Wear or damage to the gear mounting arrangement
- Long-term mechanical stress
A damaged gear can affect the operation of the injection pump drive system and may eventually cause the toothed belt to slip or lose correct engagement.
When Should It Be Replaced?
Replacement is recommended when the original drive gear shows visible tooth wear, cracking, corrosion or mechanical damage.
The gear should also be inspected during:
Mechanical fuel injection pump servicing MFI drive belt replacement Camshaft removal or replacement Engine rebuilding or restoration Investigation of injection pump drive problemsIncorrect injection pump timing, irregular engine operation or damage to the MFI drive belt may indicate a problem within the drive system and should prompt further inspection.
Confirm compatibility using the original part number and engine specification before ordering.
Installation Notes
Correct installation and alignment are essential for reliable mechanical fuel injection operation.
Inspect the toothed drive belt, associated injection pump gear, mounting hardware and related components for wear or damage.
Following installation, check the drive belt tension and mechanical fuel injection pump timing according to the Porsche workshop procedure.
Porsche 911 Mechanical Fuel Injection Pump Drive Gears & MFI Components
The mechanical fuel injection system fitted to selected early Porsche 911 models relies on accurate mechanical synchronisation between the engine and Bosch injection pump.
The left-hand camshaft drive gear is an essential component of this arrangement, transmitting rotational movement through the toothed belt to operate the fuel injection pump.
Over time, wear, corrosion or damage to the drive gear can compromise the reliability of the MFI drive system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90111002300
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 OE Match Fuel Injection Pump Drive Gear is a replacement toothed drive gear fitted directly to the mechanical fuel injection pump used on selected classic Porsche 911 models.
Fits:For vehicles with Mechanical Fuel Injection
- Porsche 911 E/S 1969-71
- Porsche 911 T-E/E/S Carrera 2.7 1972-73
- Porsche 911/98 1974-77
This gear forms a critical part of the Porsche mechanical fuel injection, or MFI, drive system.
It works together with the toothed injection-pump drive belt and the corresponding drive gear mounted on the left-hand camshaft. As the engine rotates, the camshaft-mounted gear drives the toothed belt, which in turn rotates this gear on the MFI pump.
This mechanical connection keeps the injection pump synchronised with engine speed and position so that fuel can be metered and delivered at the correct point in the engine cycle.
Wear, damaged teeth, incorrect fitment or looseness in the drive gear can interfere with this synchronisation and may contribute to poor engine running, incorrect injection timing, belt wear or complete loss of injection-pump drive.
Replacing a worn or damaged gear helps restore reliable MFI pump drive and preserves the precise mechanical relationship between the engine and injection pump.
What This Product Does:
The MFI Pump Drive Gear transfers rotational drive from the engine to the mechanical fuel injection pump.
Its main functions are to:
- Drive the mechanical fuel injection pump.
- Engage with the toothed MFI drive belt.
- Maintain correct injection-pump timing.
- Keep the pump synchronised with engine rotation.
- Support accurate mechanical fuel metering.
- Maintain stable engine performance.
- Provide a correctly profiled drive surface for the MFI belt.
- Replace a worn, damaged or incorrectly fitted original gear.
Symptoms Of Wear Or Failure:
Possible signs include:
- Visible tooth wear.
- Chipped teeth.
- Rounded tooth profiles.
- Cracked or damaged gear.
- Excessive gear movement.
- Gear running out of true.
- MFI belt tracking incorrectly.
- Accelerated belt wear.
- Belt dust around the drive area.
- Repeated injection-pump timing problems.
- Difficult starting.
- Rough running.
- Misfiring.
- Poor throttle response.
- Reduced engine performance.
- MFI pump no longer being driven correctly.
Because many of these running symptoms can also be caused by MFI pump calibration, ignition or fuel-system faults, the complete system should be diagnosed before replacement.
Why Replacement Matters:
Replacing a worn or damaged Fuel Injection Pump Drive Gear helps restore:
- Reliable MFI pump drive.
- Correct belt engagement.
- Stable mechanical injection timing.
- Consistent fuel delivery.
- Smooth engine operation.
- Correct throttle response.
- Reliable belt tracking.
- Long-term MFI system dependability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90111002200
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Restore the precision of your Porsche flat-six engine’s timing chain drive with this sprocket or intermediate shaft gear. Designed for Porsche 911/912 (verify engine code and part number), this sprocket mounts on the intermediate shaft and works in conjunction with the timing chain to drive the camshafts and maintain correct valve timing.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Fits On To Diagram Ref No 43
What This Product Does:
- The timing chain sprocket mounted on the intermediate shaft enables the correct transfer of rotational motion from the crank and timing chain to the camshaft drive or auxiliary drive components. In essence, it ensures proper timing of the valve train.
- The intermediate shaft (IMS) inside many Porsche air-cooled flat-six engines sits between the crankshaft and camshafts; the sprocket is part of that chain/gear drive mechanism. If the sprocket is worn, mis-dimensioned or damaged, then the timing chain may skip or the cam timing may drift.
- Because this component sits within the timing chain gear housing, correct fitment, tooth profile, heat-treatment, alignment and material spec matter a lot for high RPM reliability.
Symptoms & Signs You Might Need Replacement:
- Timing chain noise: rattling, clatter or audible chain slap in the timing chain housing, especially after startup or under load — this may indicate the sprocket tooth profile or mounting is compromised.
- Warning lights or mis-firing: If engine timing is off, cylinder performance may suffer, you might get rough running, mis-fires, or even engine damage.
- Wear/physical damage: On inspection of the sprocket, if tooth faces are chipped, worn, suspiciously polished, or suspect in dimension, replacement is required.
- During engine rebuild: If you are opening the timing chain case (IMS housing) or rebuilding the engine, it is good practice to replace the sprocket while access is open — because even if it looks OK, it’s a high-stress part and cheap insurance compared to major failure.
- High mileage or vintage engine: Because wear accumulates over decades, even if performance seems OK you might choose proactive replacement to avoid future major engine work.
- Engine timing integrity: The sprocket is a critical part of the chain drive that controls valve timing. A damaged sprocket could result in chain jump, incorrect cam timing, possible valve‐to‐piston contact or catastrophic failure.
- Longevity and reliability: Since this part operates hidden within the timing cover, failure often means heavy labour (engine out or major removal). Getting it right the first time reduces risk of future repair.
- Economical preventive maintenance: While replacing a sprocket adds cost at rebuild time, it’s far less expensive than engine damage that might result from a worn or failing sprocket – so replacing proactively is a wise choice.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110501312
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- 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
Sold each - 2 per engine
Fits:
Porsche 911 - 1982 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Click 'Zoom in' for large parts diagram.
Diagram ref no 40A
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310516350
The product you are viewing cross references to these numbers
-
valve control left 911 1970-73 103-15
-
valve control right 911 1970-73 103-20
-
valve control left 911 1978-83 103-10
-
valve control right 911 1978-83 103-15
-
injection system cylinder head and injection pump 911 E/S UPTO 1971 and 911 911 T-E/E/S, CARRERA 2.7 1972 ONWARDS 107-20
-
valve control left 911 1987-89 103-10
-
valve control right 911 1987-89 103-15
-
Valve control left 911 1984-86 103-10
-
valve control right 911 1984-86 103-15
-
Valve control left 911 1974-77 103-10
-
Valve control right 911 1974-77 103-15
-
Mechanical injection right for Model 911/83 1974-77 107-25
-
valve control left 911 1965-69 103-15
-
valve control right 911 1965-69 103-20
-
intermediate shaft - version I - 911 1965-69 103-22
-
injection system cylinder head and injection pump for 911 E/S 1969 onwards 107-20
-
valve control left 911 TURBO 1975-77 103-10
-
valve control right 911 TURBO 1975-77 103-15
OEMatch Camshaft Gears, Sprockets and Fixings — Fit, Function, Confidence
OEMatch camshaft gears, sprockets and fixings for Porsche models are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable. The selection covers common timing items and associated fixings used across Porsche engines and is presented to help choose the correct items for application-specific needs. OEMatch also maintains an extensive catalogue and cross-reference data to assist model matching.
Available Types
- Camshaft gears
- Timing sprockets
- Fixing kits (bolts, washers, spacers)
Understanding OEMatch Camshaft gears, sprockets and fixings
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original camshaft gears, sprockets and fixings.
OE (Original Equipment) refers to parts matching original specifications for the camshaft gears, sprockets and fixings and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM camshaft gears, sprockets and fixings engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. OEMatch supplies a wide range of Porsche parts, from gaskets to suspension hardware and engine parts, cataloguing over 4,000 part numbers and more than 8,700 OE cross-references, and continues developing new lines to support Porsche vehicles.
Benefits Include
- Restores correct valve timing and engine smoothness
- Reduces risk of internal engine damage by maintaining timing accuracy
- Offers options of materials and fixings suited to specific model requirements
Why Camshaft gears, Sprockets & Fixings Wear and Fail
- Tooth wear or chipping from prolonged use or contamination
- Corrosion due to oil contamination or moisture
- Misalignment or loose fixings caused by worn tensioners or improper installation
The Importance of Replacing with OEMatch Camshaft gears, Sprockets and Fixings
For Porsche engines, timing components play a central role in valve control and engine durability. Replacing damaged or worn camshaft gears, sprockets and fixings restores timing precision, supports consistent combustion and reduces the likelihood of costly internal damage. Choosing parts matched to the vehicle application and following correct installation procedures helps preserve engine function and reliability.
Advantages
- Direct-fit alternatives made to original-spec dimensions and tolerances
- Extensive parts catalogue and cross-references to aid model coverage
- Technical information and fitting guidance to support correct selection