Main bearing set Standard. Porsche 911 / 914 STD Size

Main bearing set Standard Size.
Set includes: 24 x Bearing shells / 2 x End shells

The Main Bearing Set is a replacement for the original Porsche crankshaft main bearings used in 911 and 914 engines. These standard-size bearings are manufactured to exact OEM tolerances, providing a perfect fit, proper crush, and ideal oil clearance for stable lubrication and crankshaft alignment. The set includes all main bearing shells required for a complete rebuild of one engine, providing smooth, quiet rotation and factory-spec oil pressure.

Fits:
Porsche 911 2.4L / 2.7L 1965 - 1977
Porsche 911 Carrera 3 1976
Porsche 914 1970-76

Cars with engine numbers upto:
>> 615 0305
>> 615 9066
>> 635 0094
>> 635 9040
>> 645 0388
>> 645 9030
>> 655 0022
>> 655 9021
>> 665 0113

Diagram Ref No 24 + 25

Consists of part numbers:
- 901 101 131 00 - Bearing shell x2
- 901 101 132 02 - Bearing shell x12

Main bearings wear over time due to heat, load, and oil pressure fluctuations. Worn bearings can cause low oil pressure, crankshaft vibration, or bearing noise.

Replace these bearings:
•  During a full engine rebuild or bottom-end overhaul
•  When oil pressure drops or metal particles appear in the oil
•  As part of preventative maintenance on high-mileage or vintage engines

New bearings restore precise crankshaft support, improve lubrication stability, and extend engine life.


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91110190100

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