Gearbox cylindrical roller bearing. Porsche 911 65-83 / 914

Gearbox cylindrical roller bearing.
The Genuine Porsche gearbox cylindrical roller bearing 99911001201 is an original-spec internal bearing designed to support the rotating shafts inside classic 901 and early 915 transmissions. A gearbox bearing supports a transmission shaft (mainshaft or pinion shaft, depending on gearbox version) and allows it to rotate under high radial load with minimal friction.

Fits:
Porsche 911 1965 - 1973 MAN
Porsche 911 1965 - 1983 SPM
Porsche 914 1970 - 1976
Porsche 914-6: SPM 1970 - 1976

Diagram ref no 27

When to Replace. Replace this bearing when:
• You hear whining, rumbling, or growling from the transmission
• There is measurable shaft play or misalignment during rebuild
• Metal particles appear in gearbox oil
• Gears feel rough, noisy, or difficult to engage
• Performing a full gearbox rebuild or restoration.

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Related, superseded, cross reference or alternative numbers for comparison.

99911001201

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