Transmission pinion shaft collar nut. Porsche 930 Turbo 1975-89  ❭  93030245300

Transmission pinion shaft collar nut.
The transmission pinion shaft collar nut secures the pinion shaft collar in the gearbox, preventing axial movement of the pinion shaft during operation. This helps maintain proper gear alignment, efficient power transfer, and prevents premature wear from shaft end-play. Correct torque and clamping force are essential for quiet and reliable transmission performance.

Fits:
Porsche 930 Turbo 3.0L 1975 - 1977
Porsche 930 Turbo 3.3L 1978 - 1989

Diagram ref no 53

Function:  Installed on the threaded end of the pinion shaft within the transmission assembly, the collar nut holds the pinion shaft collar in place. Its design ensures stable axial positioning of the pinion gear relative to bearings and mating gear sets, supporting smooth rotation and precise gear engagement throughout varying load conditions.

Transmission fasteners such as the pinion shaft collar nut play a critical role in maintaining correct gear position and load distribution within the gearbox. A worn, damaged, or incorrect nut can result in improper clamping force, leading to pinion shaft movement, gear misalignment, noise, or accelerated wear of bearings and gear teeth. Replacing it with an OE Match nut helps ensure stable transmission performance and long-term durability.

When to replace:
•  During transmission rebuilds or major service
•  If the original nut is damaged, rounded, or corroded
•  After transmission disassembly
•  When correct clamping torque cannot be achieved
•  As a precaution on high-mileage gearboxes

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93030245300

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