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. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle. 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. GM regularly updates production and service part designs to integrate new materials and technologies.
