Gearbox Support Bearing Bracket Hexagon-Head Bolt Washer. Porsche 964 C4 / 993 C4 / 993 C4S / 993 Turbo MANUAL  ❭  90002500703

Gearbox Support Bearing Bracket Hexagon-Head Bolt. A8.4
This washer sits under the hexagon-head gearbox support bolt, spreading load and providing a smooth, vibration-resistant surface between the bolt head and the support bracket. It ensures that the gearbox support bearing bracket is held securely to the chassis or transmission housing, helping maintain correct gearbox alignment and reducing the risk of loosening under engine and drivetrain load
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Fits:
Porsche 964 C4 1989 - 1994 MANUAL (Gearbox type G64.00 / G64.01 / G64.02)
Porsche 993 C4 / C4S 1995 - 1998 MANUAL (Gearbox type G64.20 / G64.21)
Porsche 993 TURBO 1995 - 1998 MANUAL (Gearbox type G64.51 / G64.52)

Diagram Ref No 12

Functions & Technical Role:
• Load distribution: Spreads clamping force from the gearbox support bolt to prevent localized stress on the bracket surface.
• Vibration resistance: Helps maintain bolt preload under road vibration and drivetrain movement.
• Corrosion resistance: Genuine Porsche washer material meets factory durability standards.
• Correct OEM fit: Matches Porsche’s original diameter and thickness for this specific application.

Fitment / Position on Car
•  Installed on: Gearbox support bearing bracket assembly
•  Quantity required: Typically 1 washer per gearbox support bolt (verify per model and service manual)




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