- Precision-engineered seal components for 1-1/8-inch cylinder bores
- Chemical-resistant synthetic rubber resists fluid swell and wear
- Prevents internal fluid bypass for dependable braking safety
- Restores full hydraulic pressure sealing capacity
- Extends the service life of original master cylinder housings
Engineered for precision rebuilding of 1-1/8-inch bore GM master cylinders, this overhaul kit supplies all necessary internal dynamic seals and rubber components. Manufactured from chemical-resistant rubber compounds, it guarantees leak-free hydraulic performance under severe operating conditions.