Stage 8 Locking Header Bolts easy to use and they are real assurance against horsepower loss or gasket failure created by loose nuts or bolts. The unique patented and trademarked functional design is just three pieces: a bolt (4130 Alloy Steel), a locking retainer and a spring clip. The header bolt kits are application specific as either hex head with a 3/16 recessed allen head or 12 point, USA or metric. All Stage 8 Locking Header Bolt Kits are sold with all of the necessary hardware for your application.
Application:
- 2002-2006 CHEVROLET AVALANCHE 2500
- 2001-2002 CHEVROLET EXPRESS 3500 8.1
- 2001-2007 CHEVROLET SILVERADO 2500 HD 8.1
- 2001-2007 CHEVROLET SILVERADO 3500 8.1
- 2001-2002 CHEVROLET SILVERADO 3500 8.1
- 2001-2006 CHEVROLET SUBURBAN 2500 8.1
- 2001-2002 GMC SAVANA 3500 8.1
- 2001-2007 GMC SIERRA 2500 HD 8.1
- 2001-2007 GMC SIERRA 3500 8.1
- 2001-2002 GMC SIERRA 3500 V8 8.1
- 2001-2006 GMC YUKON XL 2500 8.1