Speed Engineering Silverado & Sierra longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Silverado & Sierra longtube headers are mandrel bent, tig welded, and feature natural stainless steel construction. All of our Silverado & Sierra longtube headers have been dyno proven. We stand behind our Silverado & Sierra longtube headers in saying you will not find a better fitting, quality built, budget header for your vehicle.
Features include:
- Mandrel Bent Tubing
- Race Version with "NO" Air & EGR Fittings
- Full 1 7/8" Primaries
- 3" Collector
- Longtube Header Design
- Silverado / Sierra / SUV LS Headers
- Gains over 25+ rwhp
- V8 Engines Only
- 4.8L, 5.3L, 6.0L Engines
- CNC Machined Flanges
- Natural 304 Stainless Steel
- Standard Graphite Manifold Gaskets
Vehicle Applications:
1999 Chevrolet Silverado 1500 (2WD/4WD)
2000 Chevrolet Silverado 1500 (2WD/4WD)
2001 Chevrolet Silverado 1500 (2WD/4WD)
2002 Chevrolet Silverado 1500 (2WD/4WD)
2003 Chevrolet Silverado 1500 (2WD/4WD)
2004 Chevrolet Silverado 1500 (2WD/4WD)
2005 Chevrolet Silverado 1500 (2WD/4WD)
2006 Chevrolet Silverado 1500 (2WD/4WD)
1999 Chevrolet Tahoe (2WD/4WD)
2000 Chevrolet Tahoe (2WD/4WD)
2001 Chevrolet Tahoe (2WD/4WD)
2002 Chevrolet Tahoe (2WD/4WD)
2003 Chevrolet Tahoe (2WD/4WD)
2004 Chevrolet Tahoe (2WD/4WD)
2005 Chevrolet Tahoe (2WD/4WD)
2006 Chevrolet Tahoe (2WD/4WD)
1999 GMC Sierra 1500 (2WD/4WD)
2000 GMC Sierra 1500 (2WD/4WD)
2001 GMC Sierra 1500 (2WD/4WD)
2002 GMC Sierra 1500 (2WD/4WD)
2003 GMC Sierra 1500 (2WD/4WD)
2004 GMC Sierra 1500 (2WD/4WD)
2005 GMC Sierra 1500 (2WD/4WD)
2006 GMC Sierra 1500 (2WD/4WD)
1999 GMC Yukon (2WD/4WD)
2000 GMC Yukon (2WD/4WD)
2001 GMC Yukon (2WD/4WD)
2002 GMC Yukon (2WD/4WD)
2003 GMC Yukon (2WD/4WD)
2004 GMC Yukon (2WD/4WD)
2005 GMC Yukon (2WD/4WD)
2006 GMC Yukon (2WD/4WD)
2002 Cadillac Escalade (2WD/4WD)
2003 Cadillac Escalade (2WD/4WD)
2004 Cadillac Escalade (2WD/4WD)
2005 Cadillac Escalade (2WD/4WD)
2006 Cadillac Escalade (2WD/4WD)
2002 Cadillac EXT (2WD/4WD)
2003 Cadillac EXT (2WD/4WD)
2004 Cadillac EXT (2WD/4WD)
2005 Cadillac EXT (2WD/4WD)
2006 Cadillac EXT (2WD/4WD)
2002 Chevrolet Avalanche (2WD/4WD)
2003 Chevrolet Avalanche (2WD/4WD)
2004 Chevrolet Avalanche (2WD/4WD)
2005 Chevrolet Avalanche (2WD/4WD)
2006 Chevrolet Avalanche (2WD/4WD)
Note: If using a larger 4L80E transmission the bellhousing ears may need to be trimmed for proper clearance.
Note: Earlier 2500's might have fitment issues due to chassis being designed from previous years. Earlier years have the upper control arms mounted on top of the chassis, which would cause fitment issues.
Note: Most 6.0 applications have a 2 into 1 exhaust system which our y pipe system will not work with. Double check your exhaust for confirmation of fitment with single exhaust. Our x pipe kit can work on the 2 into 1 exhaust systems, but require fabrication for connection.
(Warning) This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. If you install this part on your vehicle and use the vehicle on a public road or highway, you will violate the Clean Air Act 203(a)(3), 42 U.S.C, 7522(a)(3) and may be subject to personal civil or criminal liability.