Proform 66823 Wedge-Locking Header Bolts for Select Chevrolet Astro, Chevrolet B60, Chevrolet Blazer, Chevrolet C10, Chevrolet C10 Pickup, Chevrolet C10 Suburban, Chevrolet C15, Chevrolet C1500, Chevrolet C1500 Suburban, Chevrolet C20, Chevrolet C20

PROFORM Wedge-Locking Header Bolts ELIMINATE the need to constantly re-tighten collector bolts, and without the need for clips, pins, racing-wire, chemicals or gunk. The secret is in the Wedge-Locking Washer's super-hardened external teeth that "bite" into the bottom of the bolt head and the top flange surface. Vibrations that normally cause other bolts to loosen, are blocked by the wedge-locking action that uses tension, instead of friction to stay snug. In fact, contact with oil actually facilitates the effect. Installs/uninstalls with a normal wrench, lubricate, and then reuse. Each set comes with sixteen Hex Head, Grade 8 (12.9) steel bolts (3/8"-16 thread, 3/4" long) with a black oxide finish, and pre-assembled Wedge-Locking Washers.

16 Pcs in kit

Fits: 1985-1999 Chevrolet Astro, 1982-1990 Chevrolet B60, 1987-1999 Chevrolet Blazer, 1975-1986 Chevrolet C10, 1974 Chevrolet C10 Pickup, 1974-1986 Chevrolet C10 Suburban, 1982-1985 Chevrolet C15, 1988-1999 Chevrolet C1500, 1992-1999 Chevrolet C1500 Suburban, 1975-1987 Chevrolet C20, 1975-1986 Chevrolet C20 Suburban, 1988-1999 Chevrolet C2500, 1992-1999 Chevrolet C2500 Suburban, 1975-1986 Chevrolet C30, 1983-1999 Chevrolet C35, 1988-1999 Chevrolet C3500, 1991-1994 Chevrolet C3500HD, 1975-1990 Chevrolet C50, 1975-1990 Chevrolet C60, 1986 Chevrolet C70, 1975-1999 Chevrolet Camaro, 1975-1996 Chevrolet Caprice, 1997-1999 Chevrolet Cargo Van, 1982-1985 Chevrolet Celebrity, 1991-1994 Chevrolet Commercial Chassis, 1975-1999 Chevrolet Corvette, 1975-1987 Chevrolet El Camino, 1996-1999 Chevrolet Express 1500, 1996-1999 Chevrolet Express 2500, 1996-1999 Chevrolet Express 3500, 1975-1994 Chevrolet G10, 1975-1995 Chevrolet G20, 1976-1996 Chevrolet G30, 1993-1996 Chevrolet GP3500, 1974-1996 Chevrolet Impala, 1975-1986 Chevrolet K10, 1974 Chevrolet K10 Pickup, 1974-1986 Chevrolet K10 Suburban, 1988-1999 Chevrolet K1500, 1992-1999 Chevrolet K1500 Suburban, 1975-1986 Chevrolet K20, 1975-1986 Chevrolet K20 Suburban, 1988-1999 Chevrolet K2500, 1992-1999 Chevrolet K2500 Suburban, 1977-1986 Chevrolet K30, 1988-1999 Chevrolet K3500, 1976-1986 Chevrolet K5 Blazer, 1999 Chevrolet L30, 1978-1983 Chevrolet Malibu, 1975-1988 Chevrolet Monte Carlo, 1975-1978 Chevrolet Monza, 1975-1978 Chevrolet Nova, 1975-1978 Chevrolet P10, 1975-1989 Chevrolet P20, 1975-1999 Chevrolet P30, 1985-1990 Chevrolet P40, 1983-1990 Chevrolet P60, 1987 Chevrolet R10, 1987-1988 Chevrolet R10 Suburban, 1989-1991 Chevrolet R1500 Suburban, 1987-1988 Chevrolet R20, 1987-1988 Chevrolet R20 Suburban, 1989 Chevrolet R2500, 1989-1991 Chevrolet R2500 Suburban, 1987-1988 Chevrolet R30, 1989-1991 Chevrolet R3500, 1988-1999 Chevrolet S10, 1988-1994 Chevrolet S10 Blazer, 1996-1999 Chevrolet Silverado, 1999 Chevrolet Silverado 1500, 1987-1994 Chevrolet Suburban, 1996-1999 Chevrolet Suburban 1500, 1996-1999 Chevrolet Tahoe, 1987 Chevrolet V10, 1987-1988 Chevrolet V10 Suburban, 1989-1991 Chevrolet V1500 Suburban, 1987 Chevrolet V20, 1987-1988 Chevrolet V20 Suburban, 1989-1991 Chevrolet V2500 Suburban, 1987-1988 Chevrolet V30, 1989-1991 Chevrolet V3500, 1995-1999 Chevrolet W3500 Tiltmaster, 1993-1999 Chevrolet W4500 Tiltmaster

Please review Specifications and the detailed fitment table for notes and exceptions.