Proform Wedge-Locking Header Bolts; Hex Head; M8 X 1.181in; Chevy LS; Nickel Plt; 12 Pcs 66755

Description

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.r

Attributes:

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• GTIN: 00037995667550

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• Brand Name: Proform

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• Applications: Fits GM LS Engines with 3/8-inch Wide Flange

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• Color: Nickel Plated

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• Diameter: 8mm

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• Feature/Benefit: Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts; Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations.

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• Finish: Nickel Plated

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• Length: 1.181 inch

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• Material: Steel

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• Part Type: Header Bolts

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Extended Information:

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• Country of Origin: Taiwan

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• Emissions : Released

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• Life Cycle Status: Available To Order

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Packing Information:

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• Quantity of Each: 1

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• Package UOM: EA

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• Dimension: 6.75 x 4.5 x 1.75 inches

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• Weight: 1.5 lb

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