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. Sold as a set.
Product Details:
- Engine Header Bolts
- Wedge-Locking Technology
- Hex Head Type
- 8mm x 1.25 x 1.181Inch Long
- Shiny Nickel Plated Finish
- 12 Pcs in kit
- Fits GM LS Engines With 3/8 Inch Wide Flange
- Sold As A Set
Specifications:
| brand_logo | https://www.asapnetwork.org/sites/default/files/brands/icons/icon_4.jpg |
| Color | Nickel Plated |
| color_l | Nickel |
| Description_ABR | Header Bolts |
| Description_ASC | Wedge-Locking Header Bolts; Hex Head; M8 X 1.181in; Chevy LS; Nickel Plt; 12 Pcs |
| Description_DEF | Exhaust Header Bolt |
| Description_DES | Wedge-Locking Header Bolts; Hex Head; M8 X 1.181in; Chevy LS; Nickel Plt; 12 Pcs |
| Description_EXT | 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 |
| Description_INV | Header Bolts; Hex Head; M8 X 1.181in L |
| Description_LAB | Wedge-Locking Header Bolts; Hex Head; M8 X 1.181in; Chevy LS; Nickel Plt; 12 Pcs |
| Description_MKT | 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. |
| Description_SHO | Locking Header Bolts |
| Diameter | 8mm |
| finish | Nickel Plated |
| finish_l | Plated |
| height | 1.75 |
| last_update | 2021-06-28 05:37:28 |
| length | 1.181 inch |
| length | 6.75 |
| LTL | N |
| Material | Steel |
| sold_as | Set |
| Style | Bolt |
| Thread | 8mm x 1.25 |
| weight | 1.5 |
| width | 4.5 |
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