PROFORM 66756 Wedge-Locking Header Bolts; Hex Head; 3/8 dia. X 1in; Blk Oxide Finish; 16 Pcs

Engine Header Bolts; Wedge-Locking Technology; Hex Head Type; 3/8-16 Thread X 1 Inch Long; Black Oxide Finish; 16 Pcs in kit; Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 414

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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, 1 long) with a black oxide finish, and pre-assembled Wedge-Locking Washers.

• Grade 8 (12.9) Steel
• Hex Head Type
• 1-inch Length
• Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413
• 1-inch Stud Length
• Sold as One Set of 16 Pieces

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Application Summary:

Year	Make/Model
1965-1975	Chevrolet Bel Air
1965-1972	Chevrolet Biscayne
1973-1974	Chevrolet Blazer
1969-1972	Chevrolet Brookwood
1975-1980	Chevrolet C10
1968-1974	Chevrolet C10 Pickup
1968-1980	Chevrolet C10 Suburban
1990-1993	Chevrolet C1500
1975-1986	Chevrolet C20
1968-1974	Chevrolet C20 Pickup
1968-1986	Chevrolet C20 Suburban
1991-2000	Chevrolet C2500
1992-1999	Chevrolet C2500 Suburban
1975-1986	Chevrolet C30
1968-1974	Chevrolet C30 Pickup
1988-2000	Chevrolet C3500
1967-1972	Chevrolet Camaro
1966-1976	Chevrolet Caprice
1965-1973	Chevrolet Chevelle
1968	Chevrolet Chevy II
1965-1974	Chevrolet Corvette
1966-1975	Chevrolet El Camino
1969-1970	Chevrolet Estate
1996-2000	Chevrolet Express 3500
1973-1974	Chevrolet G10 Van
1976	Chevrolet G20
1973-1974	Chevrolet G20 Van
1975-1976	Chevrolet G30
1988-1996	Chevrolet G30
1973-1974	Chevrolet G30 Van
1965-1976	Chevrolet Impala
1976	Chevrolet K10
1980	Chevrolet K10
1968-1974	Chevrolet K10 Pickup
1968-1974	Chevrolet K10 Suburban
1976-1978	Chevrolet K20
1968-1974	Chevrolet K20 Pickup
1968-1974	Chevrolet K20 Suburban
1985	Chevrolet K20 Suburban
1991-2000	Chevrolet K2500
1992-1999	Chevrolet K2500 Suburban
1977	Chevrolet K30
1980-1986	Chevrolet K30
1968-1974	Chevrolet K30 Pickup
1988-2000	Chevrolet K3500
1976-1978	Chevrolet K5 Blazer
1969-1972	Chevrolet Kingswood
1973-1975	Chevrolet Laguna
1965-1967	Chevrolet Malibu
1973-1975	Chevrolet Malibu
1970-1975	Chevrolet Monte Carlo
1969-1972	Chevrolet Nova
1973	Chevrolet P10 Van
1976	Chevrolet P20
1979	Chevrolet P20
1970-1971	Chevrolet P20 Van
1973	Chevrolet P20 Van
1975-1999	Chevrolet P30
1970-1974	Chevrolet P30 Van
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
1969-1972	Chevrolet Townsman
1987-1988	Chevrolet V20 Suburban
1990	Chevrolet V2500 Suburban
1987-1988	Chevrolet V30
1989-1991	Chevrolet V3500