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Crankshaft & Parts
By OE Match
- 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
The crankshaft gear wheel is installed on the front of the crankshaft and is responsible for driving the timing belt system that synchronizes the rotation of the crankshaft with the camshaft. In Porsche 944 and 968 engines, this gear forms the primary drive point for the timing system, ensuring that valve timing remains precisely aligned with piston movement.
Fits:
Porsche 944 1986-1991 with engine types M 44.40 and M 44.41
Porsche 968 1992-95 with engine types M 43 and M 44.
Diagram ref no 15
This OE Match version of part number 94410512507 is designed to match the factory specifications used in Porsche engines, providing accurate tooth geometry and reliable engagement with the timing belt and associated components.
The crankshaft gear transfers rotational motion from the crankshaft to the timing belt system. This ensures the camshaft opens and closes the engine valves at the correct time relative to piston movement, maintaining proper combustion and engine performance.
If the gear becomes worn or damaged, the timing system may lose accuracy, which can affect engine efficiency and reliability.
Function
• Timing Drive: Transfers crankshaft rotation to the camshaft timing system
• Engine Synchronization: Maintains precise timing between pistons and valves
• Power Transmission: Drives the timing belt mechanism
• Engine Reliability: Ensures stable and accurate valve timing
Timing system components are subjected to constant load and engine vibration. Over time the gear teeth may wear or become damaged, which can affect timing belt alignment and engine timing accuracy. Replacing the crankshaft gear during major engine service or timing system overhaul helps ensure precise timing operation and protects other components in the engine’s timing system.
Consider replacing the crankshaft gear wheel when:
• Performing a timing belt or engine rebuild service
• Gear teeth show wear or damage
• Timing system components are being replaced
• Engine timing alignment issues are detected
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410512507
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- 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 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
A small sealing ring / pressure ring / rubber-grommet placed under valve-cover / rocker-cover bolts to seal the bolt hole and prevent oil from seeping past the fastener into the engine bay.
Sold each
Fits:
Porsche 944 S / 944 S2 1987 - 1991
Porsche 968 1992 - 1995
Porsche 928 S4 / 928 GT / 928 GTS 1987 - 1995
Diagram ref no 12.
This pressure ring creates a tight, oil-resistant seal around the valve-cover bolt holes, preventing leaks and keeping the cover seated properly. It maintains correct bolt clamping tension while protecting the aluminium cover from damage, and its heat-, oil- and vibration-resistant construction ensures long-term reliability under engine operating conditions. By replacing worn or hardened grommets, it restores proper sealing and supports clean, leak-free valve-cover installation during maintenance or gasket replacement.
Over time, pressure rings / bolt grommets degrade due to heat, oil exposure, and mechanical stress.
Worn seals can lead to:
• Oil seepage around valve-cover bolts
• Leaks dripping down into the engine bay or onto belts/harness
• Reduced engine bay cleanliness and potential fires in worst-case scenarios
• Difficulty obtaining proper clamping pressure when re-torquing the cover
Replacing the ring restores proper sealing, prevents future leaks, and ensures the valve cover remains securely mounted and sealed under all conditions.
When to replace - You should install new rings if:
• You are removing or replacing the valve cover or gasket
• Existing rings appear hardened, cracked, brittle, or deformed
• You notice oil leaking around valve-cover bolt heads
• You are performing engine maintenance or rebuilding the top end
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810411502
The product you are viewing cross references to these numbers
OEMatch Crankshaft & Parts — Fit, Function, Confidence
OEMatch supplies crankshaft and related engine parts for Porsche models, selected for rebuilds, restorations and major servicing. The range is described to help you identify bearings, seals, fastenings and assembled crankshafts needed to complete an overhaul while preserving engine balance and lubrication integrity.
Available Types
- Complete crankshafts
- Main and rod bearings
- Thrust washers and spacers
- Oil seals and gaskets
- Dowel pins, bolts and pulleys
Understanding OEMatch Crankshaft & Parts
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original crankshafts and parts.
OE (Original Equipment) refers to parts matching original specifications for the crankshafts and parts and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM crankshafts and parts engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
OEMatch provides a wide range of crankshafts and related engine hardware for Porsche applications, supporting repairs across multiple model generations. The crankshaft converts linear piston motion into rotational energy and relies on bearings, seals and correct fastenings to maintain alignment, oil flow and rotational balance.
Benefits Include
- Restores rotational balance and smooth power delivery
- Protects bearings and journals by restoring correct clearances
- Improves oil control and sealing to reduce contamination and wear
Why Crankshaft & Parts Wear and Fail
- Oil starvation or contamination leading to bearing wear and journal scoring
- Imbalance or damaged dampers causing vibration and accelerated fatigue
- Cracks or fatigue from high loads, detonation or extended high-RPM use
- Incorrect assembly torque or alignment during rebuilds
The Importance of Replacing with OEMatch Crankshaft & Parts
Replacing worn crankshaft elements with correctly specified parts restores bearing clearances, oil control and rotational balance that are essential to long-term engine function in Porsche models. Choosing parts described for crankshaft assemblies helps reduce the risk of secondary damage, supports reliable lubrication and aids a smoother, more consistent running engine after rebuild or repair.
Advantages
- Direct-fit alternatives engineered to match original dimensions and tolerances where applicable
- Coverage aimed at classic and modern Porsche engines to support rebuilds and preventive maintenance
- Parts described for clear identification during overhaul and reassembly
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Oil System Parts
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Fuel System Parts
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Radial Seal / RMS / Camshaft / Balance shaft
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Belts / Tensioners / Rollers
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Engine Bearings / Shells
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Engine Valves / Guides / Springs
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Engine Mounts
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Cylinder Head / Camshaft Carrier
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Camshaft covers / Gaskets
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Camshafts
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Crankcase Parts
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Turbo Chargers / Intercoolers & Parts
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Air Intake & Injection
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Specialist Tools
