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Proform Wedge-Locking Header Bolts; Hex Head; 3/8 dia. X 1in Black Oxide ; 12 Pcs | 39066753
Proform Wedge-Locking Header Bolts; Hex Head; 3/8 dia. X 1in Black Oxide ; 12 Pcs | 39066753

Proform

Proform Wedge-Locking Header Bolts; Hex Head; 3/8 dia. X 1in Black Oxide ; 12 Pcs | 39066753

Part #39066753
$70.03

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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 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.
  • Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts, Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations
  • Grade 8 (12.9) Steel
  • Hex Head Type
  • Black Oxide Finish
  • 3/8-16 Thread Diameter
  • 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
  • Sold as One Set of 12 Pieces
Details
BrandProform
Product Dimensions 4.45 x 11.43 x 17.15 inches
Manufacturer Part Number66753
Vehicle Fitment
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