Looking for a direct-fit exhaust upgrade for your K2XX Silverado, Sierra, Tahoe, Yukon, or Escalade that drops right in where the factory manifolds were? 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. Compatible with 5.3L and 6.2L applications. Dyno proven to deliver over 12 rear-wheel horsepower over stock manifolds.
Note: GM 2500/3500 6.0L applications require the 2007–2013 GMT900 exhaust products.
Features:
- 1-5/8" Primary Tubes — Improved flow over stock cast iron manifolds on 5.3L and 6.2L applications
- 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 on 5.3L and 6.2L applications
- Compatible with 5.3L and 6.2L V8 Engines
- V8 Engines Only
Vehicle Applications:
Chevrolet Silverado 1500 (2WD/4WD) — 5.3L/6.2L
- 2014 Chevrolet Silverado 1500 (2WD/4WD) — 5.3L/6.2L
- 2015 Chevrolet Silverado 1500 (2WD/4WD) — 5.3L/6.2L
- 2016 Chevrolet Silverado 1500 (2WD/4WD) — 5.3L/6.2L
- 2017 Chevrolet Silverado 1500 (2WD/4WD) — 5.3L/6.2L
- 2018 Chevrolet Silverado 1500 (2WD/4WD) — 5.3L/6.2L
GMC Sierra 1500 (2WD/4WD) — 5.3L/6.2L
- 2014 GMC Sierra 1500 (2WD/4WD) — 5.3L/6.2L
- 2015 GMC Sierra 1500 (2WD/4WD) — 5.3L/6.2L
- 2016 GMC Sierra 1500 (2WD/4WD) — 5.3L/6.2L
- 2017 GMC Sierra 1500 (2WD/4WD) — 5.3L/6.2L
- 2018 GMC Sierra 1500 (2WD/4WD) — 5.3L/6.2L
Chevrolet Tahoe (2WD/4WD)
- 2015 Chevrolet Tahoe (2WD/4WD) — 5.3L/6.2L
- 2016 Chevrolet Tahoe (2WD/4WD) — 5.3L/6.2L
- 2017 Chevrolet Tahoe (2WD/4WD) — 5.3L/6.2L
- 2018 Chevrolet Tahoe (2WD/4WD) — 5.3L/6.2L
GMC Yukon & Yukon Denali (2WD/4WD)
- 2015 GMC Yukon/Yukon Denali (2WD/4WD) — 5.3L/6.2L
- 2016 GMC Yukon/Yukon Denali (2WD/4WD) — 5.3L/6.2L
- 2017 GMC Yukon/Yukon Denali (2WD/4WD) — 5.3L/6.2L
- 2018 GMC Yukon/Yukon Denali (2WD/4WD) — 5.3L/6.2L
Cadillac Escalade (AWD)
- 2015 Cadillac Escalade (AWD) — 5.3L/6.2L
- 2016 Cadillac Escalade (AWD) — 5.3L/6.2L
- 2017 Cadillac Escalade (AWD) — 5.3L/6.2L
- 2018 Cadillac Escalade (AWD) — 5.3L/6.2L
Cadillac Escalade EXT (AWD)
- 2015 Cadillac Escalade EXT (AWD) — 5.3L/6.2L
- 2016 Cadillac Escalade EXT (AWD) — 5.3L/6.2L
- 2017 Cadillac Escalade EXT (AWD) — 5.3L/6.2L
- 2018 Cadillac Escalade EXT (AWD) — 5.3L/6.2L
FAQ
What is the difference between these shorty headers and the 1-7/8" longtube headers (25-1037) for this platform?
Shorty headers are a direct manifold replacement and connect to your existing factory exhaust system — no Y-pipe or additional exhaust components required. Longtube headers deliver more horsepower (25+ RWHP) and require a Y-pipe to complete the installation. Choose shorties for an easy bolt-on upgrade; choose longtubes for maximum performance.
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.
Will these fit a 2500 or 3500 with a 6.0L engine?
No. GM 2500/3500 6.0L applications require the 2007–2013 GMT900 exhaust products.
Do these require any additional exhaust components?
No. These are a direct manifold replacement and connect to your factory exhaust system without a Y-pipe or X-pipe.
How much horsepower do these headers add?
Speed Engineering's shorty headers are dyno proven to add over 12 rear-wheel horsepower on 5.3L and 6.2L applications compared to stock exhaust manifolds.
What material are these headers made from?
304 natural stainless steel with full TIG-welded construction and CNC-machined flanges.
Are gaskets included?
Yes. Standard graphite manifold gaskets are included.
Are these headers street legal?
No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).
⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).
