Differential housing lock plate. Porsche 911 / 914 / 924  ❭  90133228501

Differential housing lock plate
This OE Match differential housing lock plate is a replacement locking tab used to secure the differential housing bolts on classic Porsche models. It is designed to match the original-style fitment and locking function, helping keep the differential housing fasteners safely retained.
Sold individually, 8 required for the differential

Fits:
Porsche 911 1965 - 1989
Porsche 914 1970 - 1976
Porsche 924 1976 - 1985

Diagram ref no 8

This lock plate fits on the differential housing assembly, where it is used with the differential housing bolts. It is part of the rear drivetrain / gearbox assembly and helps secure the differential housing fasteners in place.

The lock plate helps prevent the differential housing bolts from loosening under load, vibration, and drivetrain movement. It is an important small fastening component used during differential, gearbox, or rear drivetrain assembly and service.

Functions
• Locks differential housing bolts in position
• Helps prevent bolt loosening under drivetrain load
• Supports secure differential housing assembly
• Helps maintain drivetrain reliability and safety
•  Provides an OE Match replacement for the original locking plate
•  Suitable for gearbox, differential, and rear axle service work
•  Recommended for replacement when the differential housing bolts are removed

Differential lock plates are designed to secure critical fasteners and may lose effectiveness once removed, bent, corroded, or reused. A worn or damaged lock plate may not properly retain the housing bolts, increasing the risk of loosening under load. Replacing the lock plate during differential service helps ensure the assembly is secured correctly and supports long-term drivetrain reliability

When to replace
•  The differential housing bolts have been removed
•  The gearbox or differential housing is being serviced
•  The original lock plate is bent, cracked, corroded, or damaged
•  The locking tab no longer holds the bolt securely
•  Rear drivetrain repair or rebuild work is being carried out
•  The part is missing from the differential housing assembly
•  As preventative replacement during transmission or differential reassembly

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90133228501

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