Find genuine GM parts made to fit your Cadillac, Buick, Chevy, and GMC vehicle. Even shop for Hummer, Oldsmobile, Pontiac, and Saturn parts too. Every OEM GM component is engineered to match factory specifications for durability, performance, and safety. Whether you’re replacing a worn part or restoring your vehicle to its original condition, our GM catalog offers the exact parts your vehicle was built with—no guessing, no compromises. Order confidently knowing you’re getting authentic GM quality backed by the brand that built your ride.

Easily order your  Brake Proportioning Valve ( 18016172) for your  1988-1993 vehicle today!

Need more parts? We carry full inventories of OEM parts for all GM vehicles. Select what vehicle you want to shop for below to get started:

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