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Proform Header Bolts, Black 20058980
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  • Part #: 66753|
  • SKU: 20058980

Available


    • Each PROFORM 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.
Retail
$29.99

Proform Header Bolts, Black

Engine Header Bolts; Wedge-Locking Technology; Hex Head Type; 3/8-16 Thread X 1 Inch Long; Black Oxide Finish; 12 Pcs in kit; Fits GM V6, SB 265-400, Buick, Olds, Pontiac 79 and earlier, Mopar BB 383-440 exc 413, AMC V8's w 3/8in bolts
  • Each PROFORM 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.
  • Its 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.
Restrictions
  • WEB ORDER ONLY!


Color
Black Oxide

20058980

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