Big End Conrod Bearing (SET OF 12). Porsche 911 / 930 turbo / 964

SET OF 12  Big End Conrod Bearing. Standard Size.
This set of 12 bearing shells (6 upper + 6 lower) is manufactured to OEM specifications. These bearing shells maintain proper oil film clearance between the connecting rods and crankshaft journals, ensuring smooth, friction-free rotation under all operating conditions.

Fits:
Porsche 911 - 1984 to 1989
Porsche 911 (930) turbo - 1978 to 1989
Porsche 964 - 1989 to 1994

Diagram Ref No 20.

The OE Match bearing set is ideal for professional engine rebuilds, restorations, or performance refreshes, restoring reliable oil pressure and long-term bottom-end integrity.

•  Function: Provides oil film support and crankshaft bearing surface
•  Set Contents: 12 bearing shells (6 connecting rods)
•  Replacement Interval: At rebuild or low oil pressure diagnosis
•  Benefits: Restores oil pressure, eliminates knock, prevents crank damage
•  Installation: Direct-fit standard size bearings; verify journal clearance before fitting

Over time, rod bearings wear due to high RPM loads, heat cycles, and oil contamination. Worn bearings can lead to:
•  Low oil pressure or flickering oil light
•  Knocking or vibration from the crankshaft
•  Metal particles in the oil during servicing

Replace bearings:
•  During every engine rebuild or crankshaft regrind
•  When oil pressure readings drop below specification
•  After high-mileage or track use to prevent bottom-end failure

New bearings restore correct oil clearance, stable lubrication, and quiet, balanced engine operation.

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Related, superseded, cross reference or alternative numbers for comparison.

93010314715

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