66755 - PROFORM Wedge-Locking Header Bolts M8 Thread Diameter - 1.181" Long (Set of 12)

66755 - PROFORM Wedge-Locking Header Bolts M8 Thread Diameter - 1.181" Long (Set of 12)


Out of Stock

MSRP: $38.99 set
$34.99  set


WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

PROFORM Wedge-Locking Header Bolts M8 Thread Diameter - 1.181" Long (Set of 12)

These permanently assembled bolts feature special washers with super-hardened serrated teeth that, when sufficiently torqued, the washers bite into and grab the bottom of the bolt head and the top surface of the header. 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. Engine vibration increases the tension, making them even more secure! They are re-useable and you can count on them to not fail. Sold as one complete set of 12 pieces with nickle finish.

Applications:

  • GM LS Engines with 3/8" Flange

Use part# 66757 For Wedge-Locking Collector Bolts and Nut Set. Sold separately.


This product is available for all vehicles.

Product Specifications

Shipping Dimensions
  • Weight: 1 Lb
  • Dimensions: L: 7" x W: 5" x H: 2"
  • Ship Type: Standard |
Emissions Compliance
  • Non-Emissions: This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included.
Product Information
PROFORM Wedge-Locking Header Bolts M8 Thread Diameter - 1.181" Long (Set of 12)
These permanently assembled bolts feature special washers with super-hardened serrated teeth that, when sufficiently torqued, the washers bite into and grab the bottom of the bolt head and the top surface of the header. 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. Engine vibration increases the tension, making them even more secure! They are re-useable and you can count on them to not fail. Sold as one complete set of 12 pieces with nickle finish.

Applications:

  • GM LS Engines with 3/8" Flange

Use part# 66757 For Wedge-Locking Collector Bolts and Nut Set. Sold separately.

Vehicle Fitment

This product is available for all vehicles.

Specifications

Product Specifications

Shipping Dimensions
  • Weight: 1 Lb
  • Dimensions: 7" x 5" x 2"
  • Ship Type: Standard |
Emissions Compliance
  • Non-Emissions: This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included.


  • Product #:
  • SHIP TYPE:
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

This product fits the following vehicle applications. Click to view individual years.

Shipping Dimensions