Cylindrical roller bearing for Porsche 911 / 964

Cylindrical roller bearing, 20 × 47 × 14 mm
This OE-Match cylindrical roller bearing is manufactured to Porsche’s original specifications, offering a precise, direct-fit replacement for the factory-installed part.

Fits:
Porsche 911 Carrera (1987 to 1989) * with transmission code G50.00/01/50
Porsche 964 Carrera 2/4 (1989 to 1994)

Diagram ref no 25

•  Used in Porsche 911 and 964 models, typically within the gear housing / transmission pinion case as a main roller bearing in the gearbox or pinion casing.
•  Positioned on the main shaft / pinion assembly, between casing and rotating elements to carry load and maintain rotation integrity.

What Cylindrical roller bearing does:
•  Supports and allows smooth rotation of a shaft under load by reducing friction and handling radial forces
•  Maintains alignment, stability, and precision operation of gears and shafts in the drivetrain or gearbox assembly
•  Keeps components running quietly and reliably by providing a durable rolling interface

A worn bearing can cause play, noise, or gear misalignment, and in severe cases, lead to transmission failure. Replacing bearing restores the correct fit and load capacity, preventing further wear to surrounding parts. This ensures long-lasting gearbox durability, reduced vibration, and smooth, reliable performance under stress.

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Related, superseded, cross reference or alternative numbers for comparison.

99911014400

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