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

    RaceTec Pistons, AutoTec, SBC Nostalgia 283/302/327, Dome, 0.03 Oversize, 4.030 Bore, 3.250 Stroke,

    RaceTec Pistons, AutoTec, SBC Nostalgia 283/302/327, Dome, 0.03 Oversize, 4.030 Bore, 3.250 Stroke,

    $1,313.54

    Cartech Books, How To Buy And Sell Collector Cars

    Cartech Books, How To Buy And Sell Collector Cars

    $66.41

    DBA Front Street Series Brake Caliper, For Toyota Corolla ZZE122 1.8L P FWD LH 4/04 - 8/06, Kit

    DBA Front Street Series Brake Caliper, For Toyota Corolla ZZE122 1.8L P FWD LH 4/04 - 8/06, Kit

    $343.00

    DBA Rear Street Series Brake Caliper, For Skoda Octavia 1.4L (CAXA Engine) P Turbo FWD RH 9/10 - 11/13, Kit

    DBA Rear Street Series Brake Caliper, For Skoda Octavia 1.4L (CAXA Engine) P Turbo FWD RH 9/10 - 11/13, Kit

    $238.20

    Cast Piston

    Cast Piston

    $102.57