JBA 99-04 Ford Mustang 4.6L 4V 1-5/8in Primary Raw 409SS Cat4Ward Header

If you're looking to get more out of your 1999-2004 Ford Mustang with the 4.6L 4V engine, these JBA Cat4Ward headers are a solid choice. They replace the stock exhaust manifolds, which are often quite restrictive, and are designed to help your engine breathe easier. This means you can expect improved power and better efficiency from your engine, especially in the RPM range where you do most of your driving.

These headers are built from 409 stainless steel tubing, which is known for its durability and resistance to corrosion, making them a good option for daily driving or more spirited use. The primary tubes are 1-5/8 inches in diameter, stepping up to larger ports at the flange to help maximize exhaust flow. JBA uses their proprietary Firecone collector design, which is a race-proven technology aimed at boosting torque and horsepower gains. The flanges are a stout 3/8-inch thick with oversized exhaust ports, and the collector domes are extra thick to handle the heat. They also include factory-style emission connections, so you can retain your emissions equipment for a cleaner exhaust system, and come with high-quality hardware to help ensure a professional, leak-free installation.

This set includes everything you need for installation, including the necessary hardware. When installing headers, it's always a good idea to refer to the manufacturer's instructions for the best results and to ensure a proper seal.