JBA 03-09 Toyota 4.0L V6 w/o A.I.R. 1-1/2in Primary Silver Ctd Cat4Ward Header

The 3/8" thick machined flanges on these JBA Cat4Ward headers are a solid starting point, ensuring a strong seal against the cylinder head. These headers are built for the 4.0L V6 engine found in your 2003-2009 Toyota 4Runner, 2007-2009 FJ Cruiser, 2005-2011 Tacoma, and 2005-2006 Tundra, specifically for models without A.I.R. injection. By replacing the restrictive factory exhaust manifolds, these headers allow your engine to breathe much more freely, which can lead to improved power and better fuel efficiency.

JBA uses mandrel-bent stainless steel tubing for consistent diameter throughout, helping to maintain smooth exhaust flow. A notable feature is their proprietary Firecone collector design, which is developed using race-proven technology to maximize power and torque gains in the RPM range you'll use most often. The extra thick collector domes add to the overall durability. These headers also include factory-style emission connections, so you can retain your vehicle's emissions equipment, and come with high-quality hardware to help ensure a professional, leak-free installation.

When you're looking to get more out of your V6 engine, these JBA headers offer a well-built solution. They are constructed from durable stainless steel, designed to handle the demands of daily driving, towing, or even occasional spirited use.