Speed Engineering 1-3/4" Longtube Headers — 1999–2006 Chevrolet Silverado & GMC Sierra | 4.8L/5.3L/6.0L LS | 25-1012 2004-ford-ranger-esi1370510 knowing that you have optimal

knowing that you have optimal braking and steering control

while it remains optional for gas engines (PN: GM-5966)

refined appearance

Year Make Model Submodel 2012-2017 Buick Regal Base 2011 Buick Regal CXL 2012-2017 Buick Regal GS 2012-2017 Buick Regal Premium 2016-2017 Buick Regal Sport Touring

and X-1026 air filters

Speed Engineering 1-3/4" Longtube Headers — 1999–2006 Chevrolet Silverado & GMC Sierra | 4.8L/5.3L/6.0L LS | 25-1012 2004-ford-ranger-esi1370510 knowing that you have optimalThe factory exhaust manifolds on your GMT800 Silverado, Sierra, or full size SUV are one of the first restrictions holding back your LS engine. Speed Engineering's 1 3 4" longtube headers are a direct fit, dyno proven upgrade that frees up exhaust flow, improves throttle response, and delivers over 25 rear wheel horsepower over stock. This is the race version no air or EGR fittings. Built from 304 natural stainless steel with mandrel bent primary