This NOS oil pump is a direct replacement for Buick, Cadillac, Chevrolet, GMC, Isuzu, Jeep, Oldsmobile and Pontiac vehicles with V6 2.8L or V6 3.1L engines built between 1980-1990. The manufacturer part number is 8140854600, 8100876960, 83500826, 83501486 and the interchange part number is M95B. This oil pump comes with a standard volume and pressure and is backed by a 1-year manufacturer warranty. Please note that this product is California Prop 65 compliant.