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Timing Chain Sprocket For Intermediate Shaft. Porsche 911 / 912 1965-69 - 90110501312
90110501312/1
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Information
Timing Chain Sprocket For Intermediate Shaft.
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:
Fits On To Diagram Ref No 43
What This Product Does:
Symptoms & Signs You Might Need Replacement:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110501312
The product you are viewing cross references to these numbers
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
90110501312
The product you are viewing cross references to these numbers
Price: €87.75
In stock
Related products
Vehicle Group
- 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
Information
Camshaft timing gear / Drive sprocket.
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
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
90110554604
90110554602
The product you are viewing cross references to these numbers
Price: €64.35
In stock
Vehicle Group
- 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)
Information
Camshaft sprocket flange. Fits Left or Right Camshaft.
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
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
90110558300
90110558301
90110558302
The product you are viewing cross references to these numbers
Price: €76.05
In stock
Vehicle Group
- 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)
Information
Camshaft chain sprocket.
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.
90110505500
The product you are viewing cross references to these numbers
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.
90110505500
90110505500
The product you are viewing cross references to these numbers
Price: €75.99
In stock