Proform Parts 66753 Exhaust Header Bolt

Description

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.

• Grade 8 Steel Construction
• Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts
• Blocks Bolt-Loosening Rotation Caused By Vehicle Vibrations
• Installs/uninstalls With A Normal Wrench, Lubricate, And Then Reuse
• Limited 1 Year Warranty