Speed Engineering 1-7/8" Longtube Headers — 1999–2006 Chevrolet Silverado & GMC Sierra | 4.8L/5.3L/6.0L LS | 25-1011 1996-ford-e-350-econoline-esi6144392 2013 Chevrolet Avalanche (2WD/4WD) —

2013 Chevrolet Avalanche (2WD/4WD) — 4

6R Premium 2002-2006 Subaru Legacy GT 2002

Pontiac GTO — LS1/LS2

Thicker core with 27% more flow volume

2019-2020 INFINITI QX80 Limited 2019-2024 INFINITI QX80 Luxe 2021-2024 INFINITI QX80 Premium Select 2021-2024 INFINITI QX80 Sensory 2021-2023 Nissan Armada Midnight Edition 2017-2023 Nissan Armada Platinum 2018-2020 Nissan Armada Platinum Reserve 2021-2023 Nissan Armada S 2017-2023 Nissan Armada SL 2017-2023 Nissan Armada SV 2020 Nissan GT-R 50th Anniversary Edition 2009-2010 Nissan GT-R Base 2012-2016 Nissan GT-R Black Edition 2015-2021

Speed Engineering 1-7/8" Longtube Headers — 1999–2006 Chevrolet Silverado & GMC Sierra | 4.8L/5.3L/6.0L LS | 25-1011 1996-ford-e-350-econoline-esi6144392 2013 Chevrolet Avalanche (2WD/4WD) —The 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 7 8" 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