Yukon Hardcore Locking Hubs feature chromoly internals and all-steel construction for ultimate durability and strength. These hubs won't disengage under high torque applications and default to the locked position in use. Engagement comes from just a 1/3 turn of the all-steel, low-profile bezel, ensuring quick changes between two-wheel and four-wheel drive. Yukon Hardcore locking hubs are not only great looking, but feature a low-profile design to minimize impact with obstacles, as well as a proprietary coating on the locking gears for decreased friction and a long service life. Yukon Hardcore Locking Hubs feature Chromoly internals and all steel construction for ultimate durability & strength. These hubs won’t disengage under high torque applications and default to the locked position in use. This is a D44-19 locking hub kit assembly. This assembly fits 79 & Up GM 8.5 Front, 66-77 Bronco D44 & many custom D44 applications with 19 spline stubs. (includes 2.5, 4.0 & 6.0mm spacers) GM 8.5" & D44 19spl HARDCORE LOCKING HUB SET, '79+ GM8.5, '66-'77 BRONCO & CUSTOM APPS Fitment: Chevrolet Blazer Custom Deluxe 1987 Chevrolet Blazer Scottsdale 1988 Chevrolet Blazer Scottsdale 1989 Chevrolet Blazer Scottsdale 1990 Chevrolet Blazer Scottsdale 1991 Chevrolet Blazer Silverado 1987 Chevrolet Blazer Silverado 1988 Chevrolet Blazer Silverado 1989 Chevrolet Blazer Silverado 1990 Chevrolet Blazer Silverado 1991 Chevrolet K10 Cheyenne 1979 Chevrolet K10 Cheyenne 1980 Chevrolet K10 Cheyenne 1981 Chevrolet K10 Custom 1981 Chevrolet K10 Custom 1982 Chevrolet K10 Custom 1983 Chevrolet K10 Custom 1984 Chevrolet K10 Custom 1985 Chevrolet K10 Custom 1986 Chevrolet K10 Custom Deluxe 1979 Chevrolet K10 Custom Deluxe 1980 Chevrolet K10 Deluxe 1981 Chevrolet K10 Scottsdale 1979 Chevrolet K10 Scottsdale 1980 Chevrolet K10 Scottsdale 1981 Chevrolet K10 Scottsdale 1982 Chevrolet K10 Scottsdale 1983 Chevrolet K10 Scottsdale 1984 Chevrolet K10 Scottsdale 1985 Chevrolet K10 Scottsdale 1986 Chevrolet K10 Silverado 1979 Chevrolet K10 Silverado 1980 Chevrolet K10 Silverado 1981 Chevrolet K10 Silverado 1982 Chevrolet K10 Silverado 1983 Chevrolet K10 Silverado 1984 Chevrolet K10 Silverado 1985 Chevrolet K10 Silverado 1986 Chevrolet K10 Suburban Custom 1981 Chevrolet K10 Suburban Custom 1982 Chevrolet K10 Suburban Custom 1983 Chevrolet K10 Suburban Custom 1984 Chevrolet K10 Suburban Custom 1985 Chevrolet K10 Suburban Custom Deluxe 1979 Chevrolet K10 Suburban Custom Deluxe 1980 Chevrolet K10 Suburban Deluxe 1981 Chevrolet K10 Suburban Scottsdale 1979 Chevrolet K10 Suburban Scottsdale 1980 Chevrolet K10 Suburban Scottsdale 1982 Chevrolet K10 Suburban Scottsdale 1984 Chevrolet K10 Suburban Scottsdale 1985 Chevrolet K10 Suburban Silverado 1979 Chevrolet K10 Suburban Silverado 1980 Chevrolet K10 Suburban Silverado 1982 Chevrolet K10 Suburban Silverado 1983 Chevrolet K10 Suburban Silverado 1985 Chevrolet K20 Cheyenne 1979 Chevrolet K20 Cheyenne 1980 Chevrolet K20 Cheyenne 1981 Chevrolet K20 Custom 1981 Chevrolet K20 Custom 1982 Chevrolet K20 Custom 1983 Chevrolet K20 Custom 1984 Chevrolet K20 Custom 1985 Chevrolet K20 Custom 1986 Chevrolet K20 Custom Deluxe 1979 Chevrolet K20 Custom Deluxe 1980 Chevrolet K20 Deluxe 1981 Chevrolet K20 Scottsdale 1979 Chevrolet K20 Scottsdale 1980 Chevrolet K20 Scottsdale 1981 Chevrolet K20 Scottsdale 1982 Chevrolet K20 Scottsdale 1983 Chevrolet K20 Scottsdale 1984 Chevrolet K20 Scottsdale 1985 Chevrolet K20 Scottsdale 1986 Chevrolet K20 Silverado 1979 Chevrolet K20 Silverado 1980 Chevrolet K20 Silverado 1981 Chevrolet K20 Silverado 1982 Chevrolet K20 Silverado 1983 Chevrolet K20 Silverado 1985 Chevrolet K20 Silverado 1986 Chevrolet K20 Suburban Custom 1981 Chevrolet K20 Suburban Custom 1982 Chevrolet K20 Suburban Custom 1983 Chevrolet K20 Suburban Custom 1984 Chevrolet K20 Suburban Custom 1985 Chevrolet K20 Suburban Custom 1986 Chevrolet K20 Suburban Custom Deluxe 1979 Chevrolet K20 Suburban Custom Deluxe 1980 Chevrolet K20 Suburban Deluxe 1981 Chevrolet K20 Suburban Scottsdale 1979 Chevrolet K20 Suburban Scottsdale 1980 Chevrolet K20 Suburban Scottsdale 1982 Chevrolet K20 Suburban Scottsdale 1984 Chevrolet K20 Suburban Scottsdale 1985 Chevrolet K20 Suburban Scottsdale 1986 Chevrolet K20 Suburban Silverado 1979 Chevrolet K20 Suburban Silverado 1980 Chevrolet K20 Suburban Silverado 1982 Chevrolet K20 Suburban Silverado 1983 Chevrolet K20 Suburban Silverado 1985 Chevrolet K20 Suburban Silverado 1986 Chevrolet K5 Blazer Cheyenne 1979 Chevrolet K5 Blazer Cheyenne 1980 Chevrolet K5 Blazer Custom 1981 Chevrolet K5 Blazer Custom 1982 Chevrolet K5 Blazer Custom 1983 Chevrolet K5 Blazer Custom 1984 Chevrolet K5 Blazer Custom 1985 Chevrolet K5 Blazer Custom 1986 Chevrolet K5 Blazer Custom Deluxe 1979 Chevrolet K5 Blazer Custom Deluxe 1980 Chevrolet K5 Blazer Deluxe 1981 Chevrolet K5 Blazer Scottsdale 1984 Chevrolet K5 Blazer Silverado 1980 Chevrolet K5 Blazer Silverado 1981 Chevrolet K5 Blazer Silverado 1982 Chevrolet K5 Blazer Silverado 1983 Chevrolet K5 Blazer Silverado 1984 Chevrolet K5 Blazer Silverado 1985 Chevrolet K5 Blazer Silverado 1986 Chevrolet V10 Custom Deluxe 1987 Chevrolet V10 Scottsdale 1987 Chevrolet V10 Silverado 1987 Chevrolet V10 Suburban Custom Deluxe 1987 Chevrolet V10 Suburban Scottsdale 1987 Chevrolet V10 Suburban Scottsdale 1988 Chevrolet V10 Suburban Silverado 1987 Chevrolet V10 Suburban Silverado 1988 Chevrolet V1500 Suburban Scottsdale 1989 Chevrolet V1500 Suburban Scottsdale 1990 Chevrolet V1500 Suburban Scottsdale 1991 Chevrolet V1500 Suburban Silverado 1989 Chevrolet V1500 Suburban Silverado 1990 Chevrolet V1500 Suburban Silverado 1991 Chevrolet V20 Custom Deluxe 1987 Chevrolet V20 Scottsdale 1987 Chevrolet V20 Silverado 1987 Chevrolet V20 Suburban Custom Deluxe 1987 Chevrolet V20 Suburban Scottsdale 1987 Chevrolet V20 Suburban Scottsdale 1988 Chevrolet V20 Suburban Silverado 1987 Chevrolet V20 Suburban Silverado 1988 Chevrolet V2500 Suburban Scottsdale 1989 Chevrolet V2500 Suburban Scottsdale 1990 Chevrolet V2500 Suburban Silverado 1989 Chevrolet V2500 Suburban Silverado 1990 Ford Bronco Base 1971 Ford Bronco Base 1972 Ford Bronco Base 1973 Ford Bronco Base 1974 Ford Bronco Custom 1975 Ford Bronco Custom 1976 Ford Bronco Custom 1977 Ford Bronco Northland 1975 Ford Bronco Ranger 1975 Ford Bronco Sport 1975 Ford Bronco Sport 1976 Ford Bronco Sport 1977 Ford Bronco Wagon 1971 Ford Bronco Wagon 1972 Ford Bronco Wagon 1973 GMC K1500 Base 1979 GMC K1500 Base 1980 GMC K1500 Base 1981 GMC K1500 Base 1982 GMC K1500 Base 1983 GMC K1500 Base 1984 GMC K1500 Base 1985 GMC K1500 Base 1986 GMC K1500 High Sierra 1979 GMC K1500 High Sierra 1980 GMC K1500 High Sierra 1981 GMC K1500 High Sierra 1982 GMC K1500 High Sierra 1983 GMC K1500 High Sierra 1984 GMC K1500 High Sierra 1985 GMC K1500 High Sierra 1986 GMC K1500 Sierra Classic 1979 GMC K1500 Sierra Classic 1980 GMC K1500 Sierra Classic 1981 GMC K1500 Sierra Classic 1982 GMC K1500 Sierra Classic 1983 GMC K1500 Sierra Classic 1984 GMC K1500 Sierra Classic 1985 GMC K1500 Sierra Classic 1986 GMC K1500 Sierra Grande 1979 GMC K1500 Sierra Grande 1980 GMC K1500 Sierra Grande 1981 GMC K1500 Sierra Grande 1982 GMC K1500 Suburban Base 1979 GMC K1500 Suburban Base 1980 GMC K1500 Suburban Base 1981 GMC K1500 Suburban Base 1982 GMC K1500 Suburban Base 1983 GMC K1500 Suburban Base 1984 GMC K1500 Suburban Base 1985 GMC K1500 Suburban High Sierra 1979 GMC K1500 Suburban High Sierra 1980 GMC K1500 Suburban High Sierra 1981 GMC K1500 Suburban High Sierra 1982 GMC K1500 Suburban High Sierra 1983 GMC K1500 Suburban High Sierra 1984 GMC K1500 Suburban High Sierra 1985 GMC K1500 Suburban Sierra Classic 1979 GMC K1500 Suburban Sierra Classic 1980 GMC K1500 Suburban Sierra Classic 1981 GMC K1500 Suburban Sierra Classic 1982 GMC K1500 Suburban Sierra Classic 1983 GMC K1500 Suburban Sierra Classic 1984 GMC K1500 Suburban Sierra Classic 1985 GMC K1500 Suburban Sierra Grande 1979 GMC K1500 Suburban Sierra Grande 1980 GMC K1500 Suburban Sierra Grande 1981 GMC K1500 Suburban Sierra Grande 1982 GMC K2500 Base 1979 GMC K2500 Base 1980 GMC K2500 Base 1981 GMC K2500 Base 1982 GMC K2500 Base 1983 GMC K2500 Base 1984 GMC K2500 Base 1985 GMC K2500 Base 1986 GMC K2500 High Sierra 1979 GMC K2500 High Sierra 1980 GMC K2500 High Sierra 1981 GMC K2500 High Sierra 1982 GMC K2500 High Sierra 1983 GMC K2500 High Sierra 1984 GMC K2500 High Sierra 1985 GMC K2500 High Sierra 1986 GMC K2500 Sierra Classic 1979 GMC K2500 Sierra Classic 1980 GMC K2500 Sierra Classic 1981 GMC K2500 Sierra Classic 1982 GMC K2500 Sierra Classic 1983 GMC K2500 Sierra Classic 1984 GMC K2500 Sierra Classic 1985 GMC K2500 Sierra Classic 1986 GMC K2500 Sierra Grande 1979 GMC K2500 Sierra Grande 1980 GMC K2500 Sierra Grande 1981 GMC K2500 Sierra Grande 1982 GMC K2500 Suburban Base 1979 GMC K2500 Suburban Base 1980 GMC K2500 Suburban Base 1981 GMC K2500 Suburban Base 1982 GMC K2500 Suburban Base 1983 GMC K2500 Suburban Base 1984 GMC K2500 Suburban Base 1985 GMC K2500 Suburban Base 1986 GMC K2500 Suburban High Sierra 1979 GMC K2500 Suburban High Sierra 1980 GMC K2500 Suburban High Sierra 1981 GMC K2500 Suburban High Sierra 1982 GMC K2500 Suburban High Sierra 1983 GMC K2500 Suburban High Sierra 1984 GMC K2500 Suburban High Sierra 1985 GMC K2500 Suburban High Sierra 1986 GMC K2500 Suburban Sierra Classic 1979 GMC K2500 Suburban Sierra Classic 1980 GMC K2500 Suburban Sierra Classic 1981 GMC K2500 Suburban Sierra Classic 1982 GMC K2500 Suburban Sierra Classic 1983 GMC K2500 Suburban Sierra Classic 1984 GMC K2500 Suburban Sierra Classic 1985 GMC K2500 Suburban Sierra Classic 1986 GMC K2500 Suburban Sierra Grande 1979 GMC K2500 Suburban Sierra Grande 1980 GMC K2500 Suburban Sierra Grande 1981 GMC K2500 Suburban Sierra Grande 1982 GMC V1500 Base 1987 GMC V1500 High Sierra 1987 GMC V1500 Sierra Classic 1987 GMC V1500 Suburban Base 1987 GMC V1500 Suburban Base 1988 GMC V1500 Suburban Base 1989 GMC V1500 Suburban High Sierra 1987 GMC V1500 Suburban Sierra Classic 1987 GMC V1500 Suburban Sierra Classic 1988 GMC V1500 Suburban Sierra Classic 1989 GMC V2500 Base 1987 GMC V2500 High Sierra 1987 GMC V2500 Sierra Classic 1987 GMC V2500 Suburban Base 1987 GMC V2500 Suburban Base 1988 GMC V2500 Suburban Base 1989 GMC V2500 Suburban Base 1990 GMC V2500 Suburban High Sierra 1987 GMC V2500 Suburban Sierra Classic 1987 GMC V2500 Suburban Sierra Classic 1988 GMC V2500 Suburban Sierra Classic 1989 GMC V2500 Suburban SLE 1990