Wedge-Locking Header Bolts, 3/8"-16 Thread Diameter, 3/4" Long, 16 Bolt Set
Wedge-Locking Header Bolts, 3/8"-16 Thread Diameter, 3/4" Long, 16 Bolt Set
Wedge-Locking Header Bolts, 3/8"-16 Thread Diameter, 3/4" Long, 16 Bolt Set
4.7 · 3 reviews
SKU: 66752

Wedge-Locking Header Bolts, 3/8"-16 Thread Diameter, 3/4" Long, 16 Bolt Set

$37.99
FREE delivery
Description

ABOUT THIS PRODUCT

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.

Product Features:
  • Exhaust Header Bolt
  • Black Oxide Finish
  • Steel
  • Wedge-Locking Technology
  • Fits GM BB 396-502 (exc 348/409), Ford 5.0L, SB 289-302-351W, Mopar 413
  • Hex Head Type
  • 3/8-16 Thread, 3/4 Inch Long
  • Grade 8 (12.9) Steel
  • Pre-Assembled Wedge-Locking Washers
  • Includes 16 Bolts with Washers
  • Sold as a Set
  • PROFORM Parts Brand Product
Specifications
Brand
Proform (500)
SKU
66752
Product type
Automotive
Guides & Resources
User Guide
Returns Policy
Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

View full returns policy

Customer Reviews

4.7

Based on 3 reviews

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E
Emma S. Verified Buyer
12/14/2025

Exactly what I needed

Easy to order and arrived quickly. Product matched the listing and works great.

D
Dana H. Verified Buyer
10/02/2025

Solid purchase

Quality feels premium and it fits my needs well.

A
Alex P. Verified Buyer
01/09/2025

Fast shipping too

Impressed with the quality for the price. Will be back for more.

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