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- 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 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
- Porsche 95B.3 Macan Petrol 2.0L (265Bhp) 2022>>
- Porsche 95B.3 Macan T Petrol 2.0L (265Bhp) 2022>>
This is a genuine OE crankshaft seal used in modern Porsche engines. It is designed to seal the crankshaft at the rear of the engine block, preventing oil leaks while allowing the crankshaft to rotate freely.
Fits:
Porsche 95B.1 Macan 2.0L 2015 - 2018
Porsche 95B.2 Macan 2.0L 2019 - 2021
Porsche 95B.3 Macan 2.0L 2022>>
* option code: T2G - 4-cylinder SI engine 2.0 l unit 06L.D
Porsche 9YA Cayenne 2.0L 01/2017 - 05/2023
* engine code: DFKA / DFK
Diagram ref no 16
What this product does:
• Provides a tight seal around the crankshaft flange
• Prevents engine oil leaks that could reduce lubrication or cause damage
• Maintains proper oil pressure and long-term engine performance
Location: Rear of the engine, surrounding the crankshaft flange, positioned before the flywheel or flexplate
Over time, crankshaft seals can wear out, harden, or crack due to constant rotation, oil exposure, and engine heat. Failure may result in:
• Oil leaks at the rear of the engine Reduced lubrication and risk of internal engine wear
• Oil contamination of clutch or transmission components
Replacing seal ensures proper sealing, protects against costly oil leaks, and keeps your Porsche engine performing as designed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A7103171
The product you are viewing cross references to these numbers
- Porsche 95B.1 Macan Petrol 2.0L (237Bhp) 2014-18
- Porsche 95B.2 Macan Petrol 2.0L (245Bhp) 2019-21
- Porsche 95B.3 Macan Petrol 2.0L (265Bhp) 2022>>
- Porsche 95B.3 Macan T Petrol 2.0L (265Bhp) 2022>>
Fits:
Porsche 95B.1 Macan 2.0L 2015 - 2018
Porsche 95B.2 Macan 2.0L 2019 - 2021
Porsche 95B.3 Macan 2.0L 2022>>
* option code: T2G - 4-cylinder SI engine 2.0 l unit 06L.D
Porsche 9YA Cayenne 2.0L 01/2017 - 05/2023
* engine code: DFKA / DFK
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A7103171
The product you are viewing cross references to these numbers
100 Plasigauge strips per box
PLASTIGAUGE PL-A is widely used in the measurement of clearance in plain automotive bearings. Measurement of clearance in big-end bearings can be achieved without dismantling the crankshaft.
For measurements of: 0.001″ to 0.007″ (0.025mm – 0.175mm)
Suitable for use at temperatures between 0°C and 35°C
Contents:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PLA007
The product you are viewing cross references to these numbers
