Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413
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 sixteen Hex Head, Grade 8 (12.9) steel bolts (3/8-16 thread, 3/4 long) with a black oxide finish, and pre-assembled Wedge-Locking Washers.
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 sixteen Hex Head, Grade 8 (12.9) steel bolts (3/8-16 thread, 3/4 long) with a black oxide finish, and pre-assembled Wedge-Locking Washers.
Information:
Wedge-Locking Header BoltsApplication Summary:
| Year | Make/Model |
|---|---|
| 1985-1994 | Chevrolet Astro |
| 1996-1999 | Chevrolet Astro |
| 1982-1990 | Chevrolet B60 |
| 1987-1994 | Chevrolet Blazer |
| 1996-1999 | Chevrolet Blazer |
| 1975-1978 | Chevrolet C10 |
| 1982-1986 | Chevrolet C10 |
| 1974 | Chevrolet C10 Pickup |
| 1974-1975 | Chevrolet C10 Suburban |
| 1977-1978 | Chevrolet C10 Suburban |
| 1982-1986 | Chevrolet C10 Suburban |
| 1982-1985 | Chevrolet C15 |
| 1988-1994 | Chevrolet C1500 |
| 1996-1999 | Chevrolet C1500 |
| 1992-1994 | Chevrolet C1500 Suburban |
| 1996-1999 | Chevrolet C1500 Suburban |
| 1975 | Chevrolet C20 |
| 1977-1978 | Chevrolet C20 |
| 1982-1987 | Chevrolet C20 |
| 1975 | Chevrolet C20 Suburban |
| 1977-1978 | Chevrolet C20 Suburban |
| 1982-1986 | Chevrolet C20 Suburban |
| 1988-1994 | Chevrolet C2500 |
| 1996-1999 | Chevrolet C2500 |
| 1992-1994 | Chevrolet C2500 Suburban |
| 1996-1999 | Chevrolet C2500 Suburban |
| 1975 | Chevrolet C30 |
| 1977-1978 | Chevrolet C30 |
| 1982-1986 | Chevrolet C30 |
| 1983-1994 | Chevrolet C35 |
| 1996-1999 | Chevrolet C35 |
| 1988-1994 | Chevrolet C3500 |
| 1996-1999 | Chevrolet C3500 |
| 1991-1994 | Chevrolet C3500HD |
| 1975 | Chevrolet C50 |
| 1977-1978 | Chevrolet C50 |
| 1982-1990 | Chevrolet C50 |
| 1975-1978 | Chevrolet C60 |
| 1982-1990 | Chevrolet C60 |
| 1986 | Chevrolet C70 |
| 1975-1978 | Chevrolet Camaro |
| 1982-1999 | Chevrolet Camaro |
| 1975-1978 | Chevrolet Caprice |
| 1982-1994 | Chevrolet Caprice |
| 1996 | Chevrolet Caprice |
| 1997-1999 | Chevrolet Cargo Van |
| 1982-1985 | Chevrolet Celebrity |
| 1991-1994 | Chevrolet Commercial Chassis |
| 1975 | Chevrolet Corvette |
| 1977-1978 | Chevrolet Corvette |
| 1982 | Chevrolet Corvette |
| 1984-1994 | Chevrolet Corvette |
| 1996-1999 | Chevrolet Corvette |
| 1975 | Chevrolet El Camino |
| 1977-1978 | Chevrolet El Camino |
| 1982-1987 | Chevrolet El Camino |
| 1996-1999 | Chevrolet Express 1500 |
| 1996-1999 | Chevrolet Express 2500 |
| 1996-1999 | Chevrolet Express 3500 |
| 1975 | Chevrolet G10 |
| 1977-1978 | Chevrolet G10 |
| 1982-1994 | Chevrolet G10 |
| 1975 | Chevrolet G20 |
| 1977-1978 | Chevrolet G20 |
| 1982-1995 | Chevrolet G20 |
| 1976-1978 | Chevrolet G30 |
| 1982-1994 | Chevrolet G30 |
| 1996 | Chevrolet G30 |
| 1993-1994 | Chevrolet GP3500 |
| 1996 | Chevrolet GP3500 |
| 1974-1975 | Chevrolet Impala |
| 1977-1978 | Chevrolet Impala |
| Attributes | |
| Applications | Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413, Fits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413 |
| California Proposition 65 | No |
| Category | Header Bolts, Header Bolts |
| Color | Black Oxide |
| Country of Origin (Primary) | TW |
| Diameter | 3/8-in. |
| Emission Code | Legal US |
| Feature/Benefit | Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts; Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations., Wedge-Locking Technology Eliminates Constantly Re-Tightening Exhaust Collector Bolts; Blocks Bolt-Loosening Rotation caused by Vehicle Vibrations. |
| Finish | Black Oxide |
| Harmonized Tariff Code (Schedule B) | 7318152000 |
| Hazardous Material Code | N |
| Length | 3/4 inch |
| Life Cycle Status Code | Available to Order |
| Material | Steel |
| NAFTA Preference Criterion Code | B |
| part type | Header Bolts, Header Bolts |
| SDR Required Flag | N |
| Warranty Time | 1 |
| GTIN | 00037995711888 |