Bellhousing Bolt Kit by ARP These ARP bellhousing bolt kits are designed to securely hold your transmission bellhousing in place on the engine block. They are manufactured from ARP\’s durable 8740 heat-treated alloy and have a protective black oxide finish. The bolt kits come in your choice of standard hex head or smaller 12-point heads for additional clearance or to fit into tighter firewall applications. Features Fastener Head Style:Flanged 12-point Underhead Length (in.):1.375 in. Thread Size:3/8 in.-16 Fastener Material:Stainless steel Fastener Finish:Natural Benefits Durable 8740 heat-treated alloy Have a protective black oxide finish Applications 2014 2021 Chevrolet Silverado 1500 2014 2021 GMC Sierra 1500 2018 present Chevrolet Express 2018 present GMC Savanna 1966 1969 Chevrolet Camaro 1968 1973 Chevrolet Chevelle 1968 1973 Chevrolet Nova 1971 1972 Pontiac Ventura 1975 1976 Chevrolet Monza 1975 Chevrolet Nova Early 1977 Pontiac Ventura 1976 1992 Chevrolet Camaro 1977 1993 Chevrolet Caprice 1977 1985 Chevrolet Impala 1980 Chevrolet Corvette (California only) 1976 1988 Chevrolet Malibu, Chevrolet El Camino/GMC Caballero, and Chevrolet Monte Carlo 1976 1979 Chevrolet Monza 1976 1979 Chevrolet Nova (also GM X-body clones after 1976) 1977 2003 Chevrolet/GMC Trucks, SUVs, Vans 1978 1987 Buick Regal 1975 1979 Buick Skylark 1991 1992 Cadillac Brougham 1977 1981 Checker Marathon 1991 1992 Oldsmobile Custom Cruiser 1977 Oldsmobile Omega 1978 1980 Oldsmobile Cutlass (U.S. market only, Canadian market 19781987) 1977 1981 Pontiac Catalina (B-body) 1977 1981 Pontiac Bonneville (B-body) 1982 1986 Pontiac Bonneville (G-body) 1977 1992 Pontiac Firebird 1981 1987 Pontiac Grand Prix 1978 1981 Pontiac Grand LeMans (A/G-body, includes Grand Am) 1982 1986 Pontiac Parisienne (B-body) 1982 1986 Pontiac Parisienne Safari (B-body wagon) 1979 Pontiac Sunbird What\’s In The Box? 6 – Bolts Warranty Manufacturers Standard Warranty