Looking for a direct-fit manifold replacement for your GMT800 or GMT900 Silverado, Sierra, Tahoe, Yukon, Escalade, or Avalanche that bolts right in with the factory single exhaust system? Speed Engineering's 1-5/8" shorty headers are a mandrel bent, TIG-welded direct manifold replacement built from 304 natural stainless steel. Race version — no air or EGR fittings. Works with the factory single exhaust Y-pipe system. Dyno proven to deliver over 12 rear-wheel horsepower over stock manifolds. Tested on 1/2 ton applications only.
Note: Works on factory single exhaust system with traditional Y-pipe. Tested on 1/2 ton applications only.
Features:
- 1-5/8" Primary Tubes — Improved flow over stock cast iron manifolds
- 2.5" Collectors — Direct connection to factory exhaust system
- Race Version — No Air or EGR Fittings — Not compatible with emissions equipment
- Shorty Header Design — Direct manifold replacement for factory-correct fitment
- Mandrel Bent Tubing — Consistent tube diameter throughout; no crimping, no restriction
- CNC Machined Flanges — Precision fit at the cylinder head for a leak-free seal
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Standard Graphite Manifold Gaskets Included
- Dyno Proven — 12+ RWHP gain over stock manifolds
- Compatible with 4.8L, 5.3L, 6.0L, and 6.2L V8 Engines
- V8 Engines Only
Vehicle Applications:
Chevrolet Silverado 1500 (2WD/4WD)
- 1999 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2000 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2001 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2002 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2003 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2004 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2005 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2006 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L
- 2007 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2008 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2009 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2010 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2011 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2012 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2013 Chevrolet Silverado 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
GMC Sierra 1500 (2WD/4WD)
- 1999 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2000 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2001 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2002 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2003 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2004 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2005 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2006 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L
- 2007 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2008 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2009 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2010 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2011 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2012 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2013 GMC Sierra 1500 (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
Chevrolet Tahoe (2WD/4WD)
- 1999 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2000 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2001 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2002 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2003 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2004 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2005 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2006 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L
- 2007 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2008 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2009 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2010 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2011 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2012 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2013 Chevrolet Tahoe (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
GMC Yukon (2WD/4WD)
- 1999 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2000 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2001 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2002 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2003 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2004 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2005 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2006 GMC Yukon (2WD/4WD) — 4.8L/5.3L
- 2007 GMC Yukon (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2008 GMC Yukon (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2009 GMC Yukon (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2010 GMC Yukon (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2011 GMC Yukon (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2012 GMC Yukon (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2013 GMC Yukon (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
GMC Yukon Denali (2WD/4WD)
- 2007 GMC Yukon Denali (2WD/4WD) — 6.0L/6.2L
- 2008 GMC Yukon Denali (2WD/4WD) — 6.0L/6.2L
- 2009 GMC Yukon Denali (2WD/4WD) — 6.0L/6.2L
- 2010 GMC Yukon Denali (2WD/4WD) — 6.0L/6.2L
- 2011 GMC Yukon Denali (2WD/4WD) — 6.0L/6.2L
- 2012 GMC Yukon Denali (2WD/4WD) — 6.0L/6.2L
- 2013 GMC Yukon Denali (2WD/4WD) — 6.0L/6.2L
Chevrolet Avalanche (2WD/4WD)
- 2001 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L
- 2002 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L
- 2003 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L
- 2004 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L
- 2005 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L
- 2006 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L
- 2007 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2008 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2009 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2010 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2011 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2012 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
- 2013 Chevrolet Avalanche (2WD/4WD) — 4.8L/5.3L/6.0L/6.2L
Cadillac Escalade (AWD)
- 2007 Cadillac Escalade (AWD) — 6.0L/6.2L
- 2008 Cadillac Escalade (AWD) — 6.0L/6.2L
- 2009 Cadillac Escalade (AWD) — 6.0L/6.2L
- 2010 Cadillac Escalade (AWD) — 6.0L/6.2L
- 2011 Cadillac Escalade (AWD) — 6.0L/6.2L
- 2012 Cadillac Escalade (AWD) — 6.0L/6.2L
- 2013 Cadillac Escalade (AWD) — 6.0L/6.2L
Cadillac Escalade EXT (AWD)
- 2007 Cadillac Escalade EXT (AWD) — 6.0L/6.2L
- 2008 Cadillac Escalade EXT (AWD) — 6.0L/6.2L
- 2009 Cadillac Escalade EXT (AWD) — 6.0L/6.2L
- 2010 Cadillac Escalade EXT (AWD) — 6.0L/6.2L
- 2011 Cadillac Escalade EXT (AWD) — 6.0L/6.2L
- 2012 Cadillac Escalade EXT (AWD) — 6.0L/6.2L
- 2013 Cadillac Escalade EXT (AWD) — 6.0L/6.2L
Frequently Asked Questions:
Q: What is the difference between these shorty headers and the longtube headers for this platform? Shorty headers are a direct manifold replacement that connect to your existing factory single exhaust Y-pipe system — no additional exhaust components required. Longtube headers deliver more horsepower (25+ RWHP) but require a Y-pipe or X-pipe to complete the installation. Choose shorties for an easy bolt-on upgrade; choose longtubes for maximum performance.
Q: Do these work with a dual exhaust setup? These headers work with the factory single exhaust system and traditional Y-pipe setup. They have only been tested on 1/2 ton applications.
Q: Do these headers have air or EGR fittings? No. These are a race version and do not include air or EGR fittings. They are not compatible with emissions equipment.
Q: Will these fit 2500 or 3500 models? These headers have only been tested on 1/2 ton applications. Fitment on 2500 or 3500 models is not confirmed.
Q: Why do the available engine sizes change at 2007? The 2007 model year introduced the GMT900 platform, which added 6.0L and 6.2L engine availability to the lineup. 1999–2006 GMT800 trucks came with 4.8L and 5.3L engines only on the 1500 platform.
Q: How much horsepower do these headers add? Speed Engineering's shorty headers are dyno proven to add over 12 rear-wheel horsepower over stock manifolds.
Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.
Q: Are gaskets included? Yes. Standard graphite manifold gaskets are included.