Brake Master Cylinder - Dorman M390401

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 2009-99, chevrolet 2005-00, oldsmobile 2004-00, pontiac 2008-98replaces original equipment(oe) part number(s)brandpart number(s)general motors18026277, 18039288, 18060780