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Crankshaft & Parts
By OE Match
- 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 3.6L 1991-93
Standard Size Crankshaft (STD)
The standard size crankshaft (STD) is a critical
rotating component used in Porsche 964 engines.
- 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 S 3.6L 1991-93
Precision machined to maintain original journal dimensions, this crankshaft ensures proper bearing clearance, smooth rotation and reliable power delivery. When rebuilding a high-performance flat-six engine, choosing the correct standard size crankshaft is essential to restoring the engine’s structural integrity and achieving long-term durability.
Engineered to meet the performance characteristics of the original design, this crankshaft is ideal for restorations, performance rebuilds and repairs requiring uncompromising accuracy and balance.
What the Engine Crankshaft Does
This crankshaft delivers several vital engine functions,
including:
- Converting piston motion into smooth rotational force
- Maintaining
precise journal dimensions for correct oil film and bearing clearance
- Balancing
the rotating assembly to minimise vibration and engine stress
- Supporting
consistent oil delivery through internal lubrication channels
- Ensuring smooth power transfer across all RPM ranges
- Forming the structural core of the bottom end assembly
A well-balanced standard-size crankshaft is essential for proper engine behaviour, especially in performance-prone flat-six units.
Why Crankshafts Commonly Fail
Despite being exceptionally robust, crankshafts can fail due
to age, wear or incorrect operating conditions. Common causes include:
- Oil
starvation leading to journal scoring or bearing failure
- Metal
fatigue after years of high-RPM use or detonation events
- Overheating
compromising the metallurgical integrity of the crankshaft
- Contamination
from debris causing gouging or premature wear
- Imbalance
or improper machining from previous engine work
- Severe
knock or misfires bending or twisting the crankshaft
- Prolonged high load driving accelerating fatigue in older engines
Symptoms typically include low oil pressure, knocking noises, excessive vibration, or visible scoring on journals during teardown.
Why You Should Replace a Worn or Damaged Crankshaft
Replacing a compromised crankshaft with a precision-built, standard size alternative engineered to match the original specifications ensures your Porsche 964 rebuild is stable, durable and capable of performing as intended.
Benefits include:
- Restored bearing clearance and oil pressure stability
- Reduced engine vibration and smoother power delivery
- Stronger resistance to high-RPM and high-load conditions
- Improved longevity of other bottom-end components
- Prevention of catastrophic engine damage or seizure
- More accurate balancing for performance and reliability
During an engine rebuild, the crankshaft is one of the most critical components to inspect and replace if any wear is detected.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410202108
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