4.3L V6 Shorty Header

The JBA Cat4ward is a performance shorty header engineered to be a significant upgrade over restrictive stock exhaust manifolds, designed specifically for 2003-2013 GM Trucks equipped with the 4.3L V6 engine. Constructed from durable 409 stainless steel, this header features 1 1/2" mandrel-bent tubing and 3/8" thick machined flanges with oversized exhaust ports, ensuring both longevity and optimal exhaust flow. The header boasts extra-thick collector domes for added durability. With an uncoated, matte grey finish, it offers a raw, performance-oriented aesthetic. This product has a C.A.R.B. EO Number D-57-48, making it 50-state legal when installed according to the manufacturer's specifications, the CARB EO, and installation instructions. However, it is important to note that header applications are based on original engine and cylinder head port centerlines; raised port cylinder heads may cause installation issues.