Product Description
Brand-new ALUMINUM reproduction Brake Combination (Proportioning) Valve for 1978-1988 GM G-body and 1971-1981 Camaro & Firebird is an exact replacement for GM# 25509419
This part is actually 3 components combined in a common aluminum valve body. These 3 components consist of a metering or hold-off valve, a proportioning valve, and a pressure differential switch.
Factory original brake combination valves were iron bodied and subject to considerable inner deterioration due to excessive absorbed moisture in brake fluid, especially when brake fluid was not replaced often enough.
This valve is for front disc/rear drum GM brake systems.
