Speed Engineering headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our headers are mandrel bent, tig welded, and feature polished stainless steel construction. All of our headers have been dyno proven. We stand behind our 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
  • Gains over 25+ rwhp
  • V8 Engines Only
  • 4.8L, 5.3L, 6.0L Engines
  • CNC Machined Flanges
  • Polished Stainless Steel
  • Standard Graphite Manifold Gaskets



Vehicle Applications:

  • 1999-2006 Chevrolet Truck & SUV (2wd & 4wd)
  • 1999-2006 GMC Truck & SUV (2wd & 4wd)
  • 2002-2006 Cadillac Truck & 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.

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

(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.


Additional information

LS Manifold Gaskets

Graphite Paper Gaskets, LS Multi Layer Steel Gaskets, LS Multi Layer Steel Gaskets and ARP 12 Point Bolts Polished

Speed Engineering Spark Plug Wires

10 inch total length wires, 12 inch total length wires, None

Speed Engineering Off Road Y Pipe Optional

Not Included, Included


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