Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set.Details: Spider gear kit Fits Ford 7.5 inch open differential Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers 1 Year Warranty Against Manufacturer Defects Sold As A Kit Fits Vehicles: Ford Aerostar (1985 - 1997) Ford Bronco II (1984 - 1990) Ford Fairmont (1978 - 1983) Ford Granada (1979 - 1982) Ford Mustang (1979 - 2010) Ford Ranger (1983 - 2011) Ford Thunderbird (1980 - 1988) Lincoln Continental (1979 - 2002) Lincoln Mark VI (1980 - 1983) Lincoln Mark Vll (1984 - 1992) Lincoln Zephyr (1979 - 1983) Mazda B3000 (1994 - 2008) Mazda B4000 (1994 - 2007) Mercury Bobcat (1979 - 1980) Mercury Capri (1979 - 1986) Mercury Cougar (1980 - 1988) Mercury Grand Marquis (1979 - 2011) Mercury Marauder (2003 - 2004)