Brake Master Cylinder - Dorman M390186

This brake master cylinder is precision-engineered to match the design, function, and performance of the original master cylinder on specific vehicle years, makes and models. it is made of new, high-quality materials for a safe, durable replacement.precise replacement - cylinder housing is constructed to match the casting material of the original part and ensure similar performance.durable design - all rubber components are made of high-quality epdm compound for resistance to glycol-based brake fluid.100% new - made entirely of new materials, not remanufactured, to ensure highest quality and safety.strict specifications - made to meet rigorous sae international standards application summary:buick 1999-91, cadillac 1993-91, oldsmobile 1999-91, pontiac 1995-91replaces original equipment(oe) part number(s)brandpart number(s)general motors25558388, 25605860, 25616814, 25632708, 25642820