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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 2" 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 Stainless Steel
Standard Graphite Manifold Gaskets
Vehicle Applications:
1999-2006 Chevrolet SIlverado Truck & Tahoe SUV (2wd & 4wd)
1999-2006 GMC Sierra Truck & Yukon SUV (2wd & 4wd)
2002-2006 Cadillac EXT Truck (2wd & 4wd)
2002-2006 Cadillac Escalade SUV (2wd & 4wd)
2002-2006 Chevrolet Avalanche (2wd & 4wd)
Revised Y-Pipe: Now works with 4L60E & 4L80E transmissions. Also allows more room for 4wd vehicles.
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.
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.
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