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Proform Parts Exhaust Header Bolt 66755

Authorized Dealer
Brand: Proform Parts Proform Parts
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  • Part Number: 66755
  • Part Location: U.S.
  • Availability: *Special Order
  • Delivery: 2 - 3 Weeks
Retail: $57.74
Price: $54.99
You Save: $2.75
Bolt Type
Locking Bolt
Color
Black
Finish
Black Oxide
Head Type
Hex Head
Length (IN)
1.18 Inch
Material
Steel
Quantity
Set Of 12
Thread Size
8 Millimeter
Washer Type
Wedge Locking
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Proform Parts Exhaust Header Bolt

Exhaust Header Bolt; For Use With Chevy LS Engines; 8 MM Thread Size; 1.181 Inch Length; Locking Bolt; Hex Head; Black Oxide; Steel; With Wedge Locking Washers; Set Of 12

MPN: 66755

PROFORM® Grade 8 Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ Feet Pounds, 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.
Bolt Type: Locking Bolt
Head Type: Hex Head
Thread Size: 8 Millimeter
Length (IN): 1.18 Inch
Finish: Black Oxide
Color: Black
Material: Steel
Washer Type: Wedge Locking
Quantity: Set Of 12

Features

  • Permanently Assembled With A Pair Of Special Washers
  • Simple Wedge-Locking Method Uses Tension Instead Of Friction, Contact With Oil Actually Facilitates The Wedge Effect
  • Can Be Untightened With A Normal Wrench, Lubricated, And Reused
  • Limited 1 Year Warranty
Specifications of Proform Parts Exhaust Header Bolt 66755
Bolt Type Locking Bolt
Color Black
Finish Black Oxide
Head Type Hex Head
Length (IN) 1.18 Inch
Material Steel
Quantity Set Of 12
Thread Size 8 Millimeter
Washer Type Wedge Locking

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