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Crankshaft & Parts
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 914 (1970-1976)
Standard Size Crankshaft (STD)
The standard size (STD) engine crankshaft is an
essential rotating component for the early air-cooled Porsche models.
Fits:
These first-generation air-cooled flat-six engines rely heavily on the strength, balance and accuracy of the crankshaft to deliver the smooth, free-revving performance that made the classic 911 legendary.
Whether performing a true-to-original restoration or a full
bottom-end rebuild, this crankshaft ensures proper bearing clearances, smooth
rotation and the reliability required to support both naturally aspirated and
early turbocharged Porsche engines.
What the Crankshaft Does
This crankshaft plays a central role in engine operation by:
- Transforming
piston movement into rotational torque to drive the transmission
- Maintaining
exact journal sizing for correct oil film and bearing support
- Ensuring
balanced rotation across the entire RPM range
- Supporting
reliable lubrication through precision oil galleries
- Handling
high load and thermal stress typical of air-cooled performance engines
- Providing dependable bottom-end stability for both normally aspirated and turbocharged setups
Without a properly sized and balanced crankshaft, the engine cannot run smoothly or reliably.
Why Crankshafts Can Fail
Although Porsche’s air-cooled crankshafts are renowned for
durability, age, performance use and lubrication issues can lead to failure.
Common causes include:
- Oil
starvation causing bearing damage and journal scoring
- Contamination
in the oil system leading to abrasive wear
- High-mileage
fatigue resulting in stress cracks or journal out-of-round conditions
- Overheating
reducing metallurgical strength
- Incorrect
machining or imbalance from past rebuilds
- Detonation
or pre-ignition placing excessive load on journals
- Corrosion from long storage or moisture intrusion
Symptoms can include low oil pressure, vibration, bearing noise, metal debris in the oil, or excessive crankshaft end-float.
Why You Should Replace a Worn or Damaged Crankshaft
Installing a new or precision-engineered standard size crankshaft—matched to original Porsche tolerances—provides the foundation for a reliable, long-lasting engine rebuild.
Benefits include:
- Restored bearing clearance and proper lubrication
- Smooth rotational balance and reduced engine vibration
- Improved reliability for both standard and turbocharged engines
- Protection against catastrophic bottom-end failures
- Extended lifespan for connecting rods, bearings and pistons
- Consistent performance in high-heat air-cooled environments
For early air-cooled Porsche models, the crankshaft is one of the most critical components that determines the success and durability of any engine rebuild.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110201101
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) TURBO 3.3L 1991-93
- Porsche 914 (1970-1976)
*** to be used for code no: 0

Fits:
Porsche 911 1965-89
Porsche 914-6 1970-76
Porsche 964 Turbo 3.3L 1991-92
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110211102
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) TURBO 3.3L 1991-93
- Porsche 914 (1970-1976)
*** to be used for code no: 1
Fits:
Porsche 911 1965-89
Porsche 914-6 1970-76
Porsche 964 Turbo 3.3L 1991-92
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110211120
The product you are viewing cross references to these numbers
- Porsche 914 (1970-1976)

Fits:
Porsche 914 1970-76
Click 'Zoom in' for large parts diagram.
Diagram ref no 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
111105313A
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