Fits Pre~1996's (Pre-Vortec SHORT TREAD spark plug) Mercruiser Thunderbolt V8 (5.7 & 5.0) Mercruiser GM based engines. Please select either Bravo(belt driven raw water pump) or Alpha kit. Kit includes Quicksilver Oil Filter, Fuel Filter, Water Pump Impeller, and (8) OEM AC-MR43T (59571) Spark Plugs. Quicksilver OEM service kit offered by Midnight Marine. PLEASE Select Bravo or Alpha kit.... See attached pics BRAVO Kit: Oil Filter 866340Q03 (14957), Fuel Filter 802893Q01 (807172), Water Pump Impeller 59362Q01 (47- 59362T1), (8) OEM Spark Plug AC-MR43T (59571) SHORT TREAD Spark Plugs ALPHA Kit: Oil Filter 866340Q03 (14957), Fuel Filter 802893Q01 (807172), Water Pump Impeller 8M0100526 (8M0100527), (8) OEM Spark Plug AC-MR43T (59571) SHORT TREAD Spark Plugs Brand Name Midnight Marine Style Name Alpha Outdrive Item Weight 2 Pounds Manufacturer Midnight Marine Product Grade Replacement Part Outer Material Metal Included Components Oil Filter, Fuel Filter, Water Pump Impeller, and (8)Spark Plugs Manufacturer Part Number 5.7L Thunderbolt Compatible with Vehicle Type Boat Manufacturer Warranty Description Limited Liftime Global Trade Identification Number 00850063604611