19881991 GM C/K OBS Trucks – Clutch Master Cylinder Conversion Kit

Clutch Master Cylinder Conversion Kit 19881991 GM C/K OBS Trucks

Wilwood Clutch Master Cylinder Conversion for 8891 GM OBS Trucks

Upgrade your GM OBS truck clutch system with a 3/4" Wilwood master cylinder conversion designed to eliminate factory weak points and improve pedal feel, control, and durability.

Key Benefits & Features

Replaces weak OEM plastic master cylinder
Improves pedal response and engagement consistency
Billet adapter ensures accurate fitment
Includes AN banjo fitting for leak-free connection
Built for performance, towing, and daily use

Included Components

3/4" Wilwood master cylinder
Billet adapter plate
Billet clevis
Banjo fitting kit with hardware
OEM clevis bushing

Fitment & Compatibility

19881991 Chevy and GMC C/K trucks, vans, and SUVs
Manual transmission and swap applications

Installation Notes

Reuses factory firewall gasket

Engineered for strength and reliability, this kit provides a firmer pedal, smoother engagement, and a long-term upgrade over failure-prone factory components.