Wedge-Locking Header Bolts - Proform (66755)
- Sale Price: $38.46
Details
- Brand:
- SKU:
66755
- GTIN: 00037995667550
- UPC: 037995667550
- 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.
Engine Header Bolts
Wedge-Locking Technology
Hex Head Type
M8 Thread X 1.181 Inch Long
Shiny Nickel Plated Finish
12.9 Steel
12 Pcs in kit
Fits GM LS Engines with 3/8" Wide Flange
Header Bolts
Hex Head
M8 X 1.181in L
Exhaust Header Bolt
Wedge-Locking Header Bolts
Hex Head
M8 X 1.181in
Chevy LS
Nickel Plt
12 Pcs - Condition: New
California Proposition 65
WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov Additional Information
| Length | 1.181 inch |
| Diameter | 8mm |
| Feature/Benefit | Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts; Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations. |
| Applications | Fits GM LS Engines with 3/8-inch Wide Flange |
| Category | Header Bolts |
| Finish | Nickel Plated |
| Material | Steel |
| Part Type | Header Bolts |
Vehicle Fitment
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