PROFORM Wedge Locking Header Bolts Nickel Plated Grade 8 Set of 16 M8 X 1.181”



  • Grade 8 (12.9) Steel
  • Hex Head Type Heads
  • Self-Locking Design
  • Sold as Set of 16
MSRP $37.69
You save $0.74

Set of 16 PROFORM Nickel Plated Grade 8 M8 X 1.181” Wedge Locking Header Bolts.

This set of 16 PROFORM Nickel Plated Grade 8 Wedge Locking Header Bolts are direct-fit replacements for 4.6L and 5.4L Mustangs. Each bolt is made from grade 8 steel and is made to the original M8 X 1.181” thread pitch and measurements. Each bolt features a hex head design, making them compatible with common ratcheting bits. When properly torqued to 28+ ft-lbs, the washer’s super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header.

Features and Benefits:
- Grade 8 (12.9) Steel
- Hex Head Type
- Self-Locking Design
- 1.181-inch Length
- Fits Select Ford 16 Bolt 8mm Diameter Applications
- PROFORM Parts Brand Product
- Sold as a Set of 16

This keeps them from backing out or loosening while driving. After being self-locked in this manner, any bolt-loosening rotation is blocked by a wedge-locking action created by the washers interfacing, matching cams. The set is sold as a set of 16, so you can get the job done in one go.

Vehicle Fitment:
- 1996-2010 Mustang 4.6 and 5.4

California Residents: Proposition 65 Warning

Vehicle Fitment

This product will fit the following Mustang years:

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