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
- 3/8-16 Thread X 1 Inch Long
- Black Oxide Finish
- 12 Pcs in kit
- Fits GM V6, SB 265-400, Buick, Olds, Pontiac 1979 and earlier, Mopar BB 383-440 exc 413, AMC V8 with 3/8 inch bolts
- Sold As A Set
Specifications:
| brand_logo | https://www.asapnetwork.org/sites/default/files/brands/icons/icon_4.jpg |
| Color | Black Oxide |
| color_l | Black Oxide |
| Description_ABR | Header Bolts |
| Description_ASC | Wedge-Locking Header Bolts; Hex Head; 3/8 dia. X 1in Black Oxide ; 12 Pcs |
| Description_DEF | Exhaust Header Bolt |
| Description_DES | Wedge-Locking Header Bolts; Hex Head; 3/8 dia. X 1in Black Oxide ; 12 Pcs |
| Description_EXT | 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 |
| Description_INV | Header Bolts; Hex Head; 3/8-16 X 1 Inch |
| Description_LAB | Wedge-Locking Header Bolts; Hex Head; 3/8 dia. X 1in Black Oxide ; 12 Pcs |
| Description_MKT | PROFORM Wedge-Locking Header Bolts ELIMINATE the need to constantly re-tighten collector bolts, and without the need for clips, pins, racing-wire, chemicals or gunk. The secret is in the Wedge-Locking Washer’s super-hardened external teeth that “bite” into the bottom of the bolt head and the top flange surface. Vibrations that normally cause other bolts to loosen, are blocked by the wedge-locking action that uses tension, instead of friction to stay snug. In fact, contact with oil actually facilitates the effect. Installs/uninstalls with a normal wrench, lubricate, and then reuse. Each set comes with twelve Hex Head, Grade 8 (12.9) steel bolts (3/8″-16 thread, 1″ long) with a black oxide finish, and pre-assembled Wedge-Locking Washers. |
| Description_SHO | Header Bolts-Black |
| Diameter | 3/8-in. |
| finish | Black Oxide |
| finish_l | Black Oxide |
| height | 1.75 |
| last_update | 2021-06-28 05:37:30 |
| length | 1 inch |
| length | 6.75 |
| LTL | N |
| Material | Steel |
| sold_as | Set |
| Style | Bolt |
| Thread | 3/8-16 Inch |
| weight | 0.65 |
| width | 4.5 |
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