Diamond Power Oil Pump works with Ford F-150 Mustang Thunderbird Windstar Mercury Cougar Monterey 3.8L 4.2L V6 vin4 OHV Triton 2 Year Warranty (This product must be installed by a certified professional mechanic) Same day shipping when purchased before 3pm EST Our products are tested and meet or exceed OEM performance requirements Fits 1996 - 2004 FORD MUSTANG 3.8L OHV V6 Oil Pumps are made with the best quality materials (aluminum) required by the manufacturer