PFM66754 Locking Header Bolts

Proform

    No reviews yet Write a Review
    SKU:
    66754
    MPN:
    66754
    This item is currently out of stock, but can still be ordered. We will contact you with an estimated delivery date once we receive your order.
    $34.95
    PFM66754 Locking Header Bolts

    PFM66754 Locking Header Bolts

    Proform

      No reviews yet Write a Review
      SKU:
      66754
      MPN:
      66754
      This item is currently out of stock, but can still be ordered. We will contact you with an estimated delivery date once we receive your order.
      $34.95
      $34.95
      Upgrade Options:

      Description

      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 uphi ll 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.

      Extra Information

      Brand:
      Proform
      Applications:
      Fits GM LS Engines with 1/4-inch Wide Flange
      Category:
      Header Bolts
      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
      line code:
      PFM
      internal sku:
      PFM66754

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