Differential carrier bearing. Porsche 914/6 / 911F  ❭  99905900800

Differential carrier bearing
OE Match differential carrier bearing for Porsche 914/6 and 911F models. This replacement bearing supports the differential carrier assembly, helping maintain correct drivetrain operation, smooth rotation, and reliable gearbox performance.  

Fits:
Porsche 914/6 1970 – 1972 Sportomatic gearbox only
Porsche 911 F 1965 – 1973

Diagram ref no 8

The differential carrier bearing supports the differential carrier as it rotates under drive load. A correctly functioning bearing helps maintain proper gear mesh, reduces drivetrain noise, and supports smooth transfer of power through the gearbox and differential.

Functions
•  Replaces the differential carrier bearing
•  Supports the differential carrier assembly
•  Helps maintain correct differential alignment
•  Supports smooth drivetrain rotation
•  Helps reduce bearing noise, vibration, and rough operation
•  Used during gearbox, differential, or transmission overhaul
•  OE Match replacement for Porsche drivetrain service.

Why Replace This Part?
Differential carrier bearings are exposed to high rotational loads, gear oil, heat, mileage, and drivetrain stress. Over time, they can become worn, noisy, pitted, loose, or damaged. A worn bearing may cause whining, rumbling, vibration, excessive play, poor gear mesh, or contamination in the gearbox oil. Replacing the bearing during gearbox or differential service helps restore reliable drivetrain operation.

When to Replace This Part
•   Gearbox or differential rebuild is being carried out
•   Differential bearing noise, whining, or rumbling is present
•   Excessive differential carrier play is found
•   Bearing wear, pitting, roughness, or damage is visible
•   Gear oil contains metallic debris
•   Transmission vibration or rough drivetrain operation is being investigated
•   The vehicle is undergoing Porsche 914/6 or 911F drivetrain restoration.

Where it fits on the car
This bearing fits within the gearbox / differential carrier assembly on Porsche 914/6 and 911F models. It forms part of the drivetrain and transmission support system.

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Related, superseded, cross reference or alternative numbers for comparison.

99905900800

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