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 twelve 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.

Features:
Grade 8 (12.9) Steel
  • Hex Head Type
  • 1-inch Length
  • Fits GM V6, SB 265-400, Buick, Olds, Pontiac '79 and earlier, Mopar BB 383-440 exc 413, AMC V8's w 3/8" bolts
  • PROFORM Parts Brand Product
  • Sold as Set of 12
  • More From This Category

    ARP Alternator Bracket Bolts, Stainless Steel, Polished, 12-Point, For Chevrolet Small/Big Block, Set

    ARP Alternator Bracket Bolts, Stainless Steel, Polished, 12-Point, For Chevrolet Small/Big Block, Set

    $21.12

    MANLEY Piston, Turbo Tuff, 1.209 in. Compression Distance, 99.55 mm Bore Size, -17cc Dish, For Subaru, Set of 4

    MANLEY Piston, Turbo Tuff, 1.209 in. Compression Distance, 99.55 mm Bore Size, -17cc Dish, For Subaru, Set of 4

    $1,559.44

    Wilwood Rotor, 1.25 Width, 11.75 in. Dia, 8 x 7.00 in. Bolt Circle, Iron, 32 V, Plain Face, Plain, Each

    Wilwood Rotor, 1.25 Width, 11.75 in. Dia, 8 x 7.00 in. Bolt Circle, Iron, 32 V, Plain Face, Plain, Each

    $80.66

    Camshaft

    Camshaft

    $158.65

    COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat Cam, Advertised Duration 268/280, Lift .509/.512, For Ford 221-302

    COMP Cams Cam/Lifters/Timing, Xtreme Energy, Hydraulic Flat Cam, Advertised Duration 268/280, Lift .509/.512, For Ford 221-302

    $814.46

    DBA Front Xtreme Performance Brake Pads, For Holden HSV Harrop 4 Piston VT-VX, Kit

    DBA Front Xtreme Performance Brake Pads, For Holden HSV Harrop 4 Piston VT-VX, Kit

    $225.90