This is the oil pump for 1993-1995 Chevrolet Corvette ZR1 vehicles. This is for those vehicles equipped with the 4 bolt LT5 5.7L engine. This part can be used to overhaul 1990-1992 pumps by removing the internal gears, and re-installing them into the 1990-1992 pump housing. The 2 bolt motor pumps are not available anywhere, this is the next best option available. This pump requires the end user to disassemble it and remove internal gears to replace the worn gears inside your existing 1990-1992 pump housing. The 4 bolt pump housing will not fit a 2 bolt motor, but all internal parts are identical. If you are purchasing this part to overhaul your 1990-1992 model, you will need a new oil pump graphite seal. This part is new old stock and is brand new and never been installed. This part is rare and hard to find and has also been discontinued by General Motors. Replace your old part with this brand new, factory original part from General Motors.

*THIS PART WILL NEED TO BE TAKEN APART AND THE GEARS WILL NEED TO BE INSTALLED INTO YOUR EXISTING 1990-1992 OIL PUMP HOUSING*

New. Never Installed. OEM Part. New Old Stock

GM Part # 10135871

Item is number 31 in the GM diagram