Flywheel spigot bearing.
Clutch pilot bearing supports and stabilises the manual transmission input shaft at the rear of the crankshaft/flywheel interface.
Fits:Porsche 911 TURBO 3.3L 1984 - 1988
* Engine type: 930.66 / 930.68
Diagram ref no. 3
The clutch pilot bearing serves a critical alignment role between the engine and the manual transmission. When the clutch is disengaged, it helps guide the transmission input shaft, allowing it to remain centered in the crankshaft or flywheel as it spins. This ensures smooth clutch engagement and disengagement, and it significantly reduces wear on the transmission input shaft and splines.
The clutch pilot bearing operates in a high-stress environment at the heart of the drivetrain. Over time and mileage, the bearing can wear out, leading to symptoms like:
• Grinding or whining noises when the clutch is pressed
• Difficulty shifting gears, especially into first or reverse
• Vibrations from the clutch pedal or drivetrain
• In severe cases, the transmission may pop out of gear or sustain further damage.
Replacing bearing restores proper alignment between the engine and transmission, reduces drivetrain wear, and improves overall shifting smoothness and reliability.
Replace the clutch pilot bearing if:
• You are replacing the clutch assembly
• You hear noise when engaging/disengaging the clutch
• You experience difficult shifting or input-shaft vibration
• The bearing shows signs of wear or looseness during inspection
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