Description: All models.

Description: Bonneville, LeSabre. 3.8l. With hi-output engine. All models. 3.3l. LaCrosse. Park Avenue. Impala, Monte Carlo. Grand Prix. Lucerne. Riviera. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Description: Sfi. All models. 3.3l. Riviera. With supercharger. No.1 & 4.

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