12 Pcs

$69.90 USD
$69.90 USD $69.90 USD
12 Pcs

12 Pcs

$69.90 USD
$69.90 USD $69.90 USD
Each PROFORM 12.9 Steel (equiv. Grade 8+) Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft-lbs, the washers super-hardened external teeth bite into and grip 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. It's an uphill climb: vibration that might ordinarily loosen the bolt actually increases the wedge-locking tension, securing the bolt even more. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, PROFORM Header Bolts can be untightened with a normal wrench, lubricated, and reused.

Attributes:

  • Brand Name: Proform
  • GTIN: 00037995667543
  • Applications: Fits GM LS Engines with 1/4-inch Wide Flange
  • Color: Nickel Plated
  • Diameter: 8mm
  • Feature/Benefit: Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts; Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations.
  • Finish: Nickel Plated
  • Length: 0.984 inch
  • Material: Steel
  • Part Type: Header Bolts

Extended Information:

  • Country of Origin: TW
  • Emissions : 1
  • Life Cycle Status: Available To Order

Packing Information:

  • Quantity of Each: 1
  • Package UOM: ST
  • Weight: 0 POUNDS

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