This is exhaust valve for many different GM vehicles from 1984-1988. This is a brand new, factory OEM, genuine GM part, still in the original box. The box is in rough shape. This exhaust valve is for those vehicles equipped with the 2.5L 4 cylinder engines. This is for Buick Century, Skylark, Somerset, Chevrolet Astro, Blazer, Celebrity, Citation, S10, GMC Jimmy, Safari, Oldsmobile Calais, Cutlass, Omega, Pontiac 6000, Fiero, Grand Am, and Pheonix vehicles.

GM part # 10044612

Alternate part # 10044421

Item is number 35 in the GM diagram.