Fits GM LS Engines with 3/8 Wide Flange
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.
Information:
12 Pcs
Application Summary:
| Year |
Make/Model |
| 1997-1999 |
Chevrolet C1500 |
| 1997-1999 |
Chevrolet C1500 Suburban |
| 1997-1999 |
Chevrolet C2500 |
| 1997-1999 |
Chevrolet C2500 Suburban |
| 1997-1999 |
Chevrolet C35 |
| 1997-1999 |
Chevrolet C3500 |
| 1997-1999 |
Chevrolet Camaro |
| 1997-1999 |
Chevrolet Cargo Van |
| 1997-1999 |
Chevrolet Corvette |
| 1997-1999 |
Chevrolet Express 1500 |
| 1997-1999 |
Chevrolet Express 2500 |
| 1997-1999 |
Chevrolet Express 3500 |
| 1997-1999 |
Chevrolet K1500 |
| 1997-1999 |
Chevrolet K1500 Suburban |
| 1997-1999 |
Chevrolet K2500 |
| 1997-1999 |
Chevrolet K2500 Suburban |
| 1997-1999 |
Chevrolet K3500 |
| 1999 |
Chevrolet L30 |
| 1997-1999 |
Chevrolet P30 |
| 1997-1999 |
Chevrolet Silverado |
| 1999 |
Chevrolet Silverado 1500 |
| 1999 |
Chevrolet Silverado 2500 |
| 1997-1999 |
Chevrolet Suburban 1500 |
| 1997-1999 |
Chevrolet Tahoe |
| 1997-1999 |
Chevrolet W3500 Tiltmaster |
| 1997-1999 |
Chevrolet W4500 Tiltmaster |
| Attributes |
| Applications |
Fits GM LS Engines with 3/8-inch Wide Flange, Fits GM LS Engines with 3/8-inch Wide Flange, Fits GM LS Engines with 3/8-inch Wide Flange |
| California Proposition 65 |
No |
| Category |
Header Bolts, Header Bolts, Header Bolts |
| Color |
Nickel Plated, Nickel Plated |
| Country of Origin (Primary) |
TW |
| Diameter |
8mm |
| Emission Code |
Legal US |
| Feature/Benefit |
Wedge-Locking Technology, Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts; Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations., Easy to use, No special clips or adhesives needed, Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts; Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations., Reusable, Backed by a full 30 day limited factory warranty |
| Finish |
Nickel Plated, Nickel Plated, Shiny Nickel Plated Steel |
| Harmonized Tariff Code (Schedule B) |
7318190000 |
| Hazardous Material Code |
N |
| Length |
1.181 inch |
| Life Cycle Status Code |
Available to Order |
| Material |
Steel, Steel |
| NAFTA Preference Criterion Code |
B |
| part type |
Header Bolts, Header Bolts, Header Bolts |
| SDR Required Flag |
N |
| Warranty Time |
1 |
| GTIN |
00037995667550 |
