Flywheel-End, Shaft bearing (or pinion bearing). Porsche 911 1972-1989 (915 Gearbox)  ❭  99911014601

Flywheel-End, Shaft Bearing (Or Pinion Bearing) For 915 Transmission.
The OE Match Flywheel-End Shaft Bearing (Pinion Bearing) for 915 Transmission (99911014601/1) is a high-quality replacement transmission bearing designed to support and accurately locate the pinion shaft within the Porsche 915 gearbox. Manufactured to OE specifications for fit, precision and durability, this bearing plays a critical role in maintaining proper shaft alignment, smooth gear operation and efficient power transfer throughout the transmission.  

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L  

Diagram Ref No 28

Constructed from premium-grade bearing steel and engineered to withstand high rotational loads, torque forces and continuous gearbox operation, the flywheel-end shaft bearing helps minimise friction while supporting the pinion shaft under demanding driving conditions. Correct bearing performance is essential for preserving gearbox reliability, shift quality and transmission longevity.  

What This Product Does:

• Supports the pinion shaft within the 915 transmission.
• Maintains precise shaft alignment during operation.
• Reduces friction between rotating gearbox components.
• Helps ensure smooth gear engagement and operation.
• Supports efficient power transfer through the transmission.
• Minimises wear on gears, shafts and related components.
• Contributes to overall gearbox performance and durability.

Symptoms Of Wear Or Failure:

• Whining, humming or rumbling noises from the transmission.
• Increased gearbox vibration.
• Excessive shaft movement or internal transmission play.
• Rough or noisy operation while driving.
• Difficulty maintaining smooth gear engagement.
• Metal particles found in gearbox oil.
• Premature wear of gears and associated transmission components.
• Increased transmission operating temperatures.
• Severe gearbox damage if bearing failure progresses.

Why Replacement Matters:

• The flywheel-end shaft bearing operates under constant rotational loads and is subjected to significant torque forces, heat and vibration throughout its service life. Over time, bearing surfaces can wear, lubrication can deteriorate and internal clearances can increase, reducing the bearing's ability to support the pinion shaft accurately.
• A worn bearing can allow excessive shaft movement, affecting gear mesh accuracy and placing additional stress on gears, synchronisers and other internal transmission components. If left unresolved, bearing failure can lead to accelerated gearbox wear, increased noise and potentially extensive transmission damage requiring a full rebuild.
• Replacing a worn flywheel-end shaft bearing restores correct shaft support, improves gearbox smoothness and helps protect valuable transmission components from premature wear. An OE Match replacement provides factory-style fitment, precision manufacturing and dependable long-term durability, ensuring reliable performance and helping preserve the operation of your Porsche 915 transmission.

Related reference numbers
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99911014601

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