Flywheel Bolt Kit by ARP These Pro series flywheel bolts from ARP give you all that you need to bolt in your flywheel with confidence. They\’re much stronger than OEM hardware, are forged from aerospace alloy, and are heat-treated prior to thread rolling and machining. These bolts feature an exclusive, flat 12-point head design and a larger-than-stock shank diameter for increased strength and improved flywheel register. Features Thread Size: M10 x 1.25 Underhead Length (in.): 0.770 in. Washer Included: No Head Style: 12-point Fastener Finish: Black oxide Fastener Material: Chromoly Benefits Much stronger than OEM hardware Forged from aerospace alloy Heat-treated prior to thread rolling and machining Applications 1977 Pontiac Astre 1977 1979 Pontiac Phoenix 1977 1980 Pontiac Sunbird 1978 1980 Chevrolet Monza, Oldsmobile Starfire 1980 1982 AMC Concord 1980 1982 AMC Spirit 1980 1983 Jeep CJ 1980 1984 Oldsmobile Omega, Pontiac Phoenix 1980 1985 Buick Skylark, Chevrolet Citation 1981 1983 AMC Eagle 1982 1985 Chevrolet Camaro, Pontiac Firebird 1982 1989 Chevrolet Celebrity 1982 1991 Pontiac 6000 1982 1992 Buick Century, Oldsmobile Cutlass Ciera 1984 1988 Pontiac Fiero 1985 1987 Chevrolet S-10 Blazer, GMC S-15 Jimmy 1985 1993 Chevrolet S-10, GMC S-15/Sonoma 1985 1990 Chevrolet Astro, GMC Safari 1985 1987 Buick Somerset 1985 1991 Pontiac Grand Am, Oldsmobile Cutlass Calais 1986 1991 Buick Skylark 1987 1994 Grumman LLV (USPS delivery vehicle) 1990 1992 Chevrolet Lumina What\’s In The Box? 12 – Bolts Warranty Manufacturers Standard Warranty