Exhaust› Headers, Manifolds and Components

Proform

WEDGELOCKING HEADER BOLTS 1INL x 3/8IN 16 PIECES

$56.98

SKU: P022 66756

In Stock
In Stock
Ships by Jun 14
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Proform 66756 is a set of 16 self-locking wedge header bolts. These bolts feature a steel construction with a black oxide finish and a 3/8 in.-16 thread size. They have a hex head style and an underhead length of 1.000 in.

They utilize special washers with serrated teeth that bite into the header surface and bolt head, creating a wedge-locking action. This mechanism increases tension with vibration, ensuring a secure fit and a leak-free exhaust system.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandProform
Part NumberP022 66756

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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