Description: All models. 3.8L, with supercharger. With pulley, with supercharger. Riviera. Park Avenue. Impala, Monte Carlo. With supercharger, 2nd design.

Description: GM Genuine Parts Timing Cover Gasket (Part Number: 12587003) is a timing cover gasket used to seal the front engine cover and prevent oil leaks. Type: Engine timing cover gasketFunction: Seals timing cover to engine block to prevent oil leakageAlso known as: Timing Cover Gasket SetOrder with confidence from World Parts Direct — an American corporation offering great prices, compatibility guarantee, and OEM-backed support.

Description: Impala, Monte Carlo. All models. 3.8l. Park Avenue. Grand Prix. With supercharger, 2nd design. Riviera. LaCrosse.

Description: Seals the openings on either end of the crankshaft for a tight seal Withstands heat and pressure to help prevent the engine from leaking oil This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type