Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Merge Collector Spike
Speed Engineering Spark Plug Wires
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006
Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers | 1999-2006

Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers 1999-2006

Regular price $299.99 Save $-299.99
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SKU: 25-1012

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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
  • Merge Spikes
  • Race Version with "NO" Air & EGR Fittings
  • Full 1 3/4" Primaries
  • Longtube Header Design
  • Silverado / Sierra / SUV LS Headers
  • 3" Collector
  • Gains over 25+ rwhp
  • V8 Engines Only
  • 4.8L, 5.3L, 6.0L Engines
  • CNC Machined Flanges
  • Natural Stainless Steel (Y-Pipe 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)

Note: If using a larger 4L80E transmission the bellhousing ears may need to be trimmed for proper clearance.

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.

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.

(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.

Customer Reviews

Based on 7 reviews
71%
(5)
29%
(2)
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J
J
06 Chevy Silverado

Just installed mine the fit was okay had to do a little adjustment might’ve been because my truck is lifted but overall I’m very happy with my purchase

J
Joshua
2000 4.8 Silverado

Made the truck like a vette with X pipe and 2.5in tips out the back c7 style.

J
Jay
Great product

Just installed the 1 3/4th long tube headers on my 99 5.3 4x4! excellent fit. 0 modification needed. Both fit right in like A glove. I’m impressed with the sound and the throttle response and fitment. These are must!🔥 thank you speed engineering.

B
Brian
Overall a great product

I want to state that the set I have on my 2001 Silverado were purchased back in mid 2016. They have been on the truck since and have held up well. My only gripe is the 02 sensor bung location on the passenger side. The sensor hits the floor. I had to run an adapter to turn it sideways. I have installed 2 other sets on this generation of truck since with no problems, so I assume this was an early production glitch that was taken care of. When I have my truck apart to do a different set of cylinder heads - I plan to plug off the factory bung and weld in another one in a better spot.

R
Rigo
Perfect for 02 Silverado 1500 Ls

The headers are a perfect fit. No modifications required and engine sounds amazing now prefect combo with the true dual exhaust system also.