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Wedge-Locking Header Bolts 3/4"L x 3/8"; 16 Bolts | #66752

Wedge-Locking Header Bolts 3/4"L x 3/8"; 16 Bolts | #66752

Wedge-Locking Header Bolts 3/4"L x 3/8"; 16 Bolts | #66752

$37.95
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SKU:
66752
Fitment:
Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413

Black Oxide Finish; 3/8"-16 Thread Diameter, 3/4" Long

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.

Features:
  • Grade 8 (12.9) Steel
  • Hex Head Type
  • 3/4-inch Length
  • Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413
  • PROFORM Parts Brand Product
  • Sold as One Set of 16 Pieces
Proform warrants its new products to be free from defects in material and workmanship under normal use and if properly installed for a period of 12 months from the date of purchase. Products used in racing applications or products that have been physically or mechanically altered, improperly installed or maintained, or used in improper applications are not covered under this warranty.