Speed Engineering 1-3/4" Longtube Headers & Y-Pipe Full Kit for 2007–2013 Chevrolet Silverado and GMC Sierra 1500 4.8L, 5.3L, 6.0L, 6.2L applications.
This complete bolt-on system replaces the restrictive factory exhaust manifolds and mid-pipes with free-flowing stainless longtubes and a 3" off-road Y-pipe that connects directly to the existing cat-back location. Designed for improved exhaust flow, increased horsepower, and a deeper, more aggressive exhaust tone while maintaining long-term durability.
⚠️ Note: Rear (downstream) O₂ sensors are not used. A check-engine light for catalyst efficiency will appear and must be disabled via PCM tuning.
Kit Includes
- (1) Pair of stainless steel 1-3/4" Longtube Headers
- (1) 3" Off-Road Y-Pipe / Connection Pipe
- (1) Set of Zinc-Coated Header Bolts (or stainless ARP bolts if selected)
- (2) MLS Exhaust Gaskets
Plug Wires and Sleeves can be added to the kit if selected.
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
- Merge Spikes
- Full 1 3/4" Primaries
- 3" Collector
- Longtube Header Design
- Silverado / Sierra / SUV LS Headers
- Gains over 25+ rwhp
- V8 Engines Only
- 4.8L, 5.3L, 6.0L, 6.2L Engines
- CNC Machined Flanges
- Natural Stainless Steel
- Standard Graphite Manifold Gaskets
Vehicle Applications:
2007 Chevrolet Silverado / GMC Sierra / Chevrolet Tahoe / GMC Yukon / Cadillac Escalade / Chevrolet Avalanche (2WD/4WD)
2008 Chevrolet Silverado / GMC Sierra / Chevrolet Tahoe / GMC Yukon / Cadillac Escalade / Chevrolet Avalanche (2WD/4WD)
2009 Chevrolet Silverado / GMC Sierra / Chevrolet Tahoe / GMC Yukon / Cadillac Escalade / Chevrolet Avalanche (2WD/4WD)
2010 Chevrolet Silverado / GMC Sierra / Chevrolet Tahoe / GMC Yukon / Cadillac Escalade / Chevrolet Avalanche (2WD/4WD)
2011 Chevrolet Silverado / GMC Sierra / Chevrolet Tahoe / GMC Yukon / Cadillac Escalade / Chevrolet Avalanche (2WD/4WD)
2012 Chevrolet Silverado / GMC Sierra / Chevrolet Tahoe / GMC Yukon / Cadillac Escalade / Chevrolet Avalanche (2WD/4WD)
2013 Chevrolet Silverado / GMC Sierra / Chevrolet Tahoe / GMC Yukon / Cadillac Escalade / Chevrolet Avalanche (2WD/4WD)
Note: Y-Pipe "WILL WORK" on trucks & suv's with 6 Speed Automatic transmissions.
Note: Depending on factory exhaust type. Some cutting/welding may be required for Y pipe install.
(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.