JBA 97-03 Ford F-150 5.4L 2V 1-1/2in Primary Raw 409SS Cat4Ward Header

If you're looking to get more power and better efficiency out of your 1997-2003 Ford Expedition with the 5.4L 2V engine, swapping out the restrictive factory exhaust manifolds for a set of JBA Cat4Ward headers is a solid move. These headers are designed to significantly reduce exhaust backpressure, allowing your engine to breathe more freely and put that extra airflow to work. This means you'll feel a noticeable improvement in acceleration and overall engine performance, whether you're towing a trailer or just heading to work.

JBA builds these headers from durable 409 stainless steel tubing, which holds up well to the heat and stress of daily driving and heavier use. The 3/8-inch thick machined flanges are extra thick to resist warping, and the oversized exhaust ports are matched to the engine's needs. A key feature is JBA's proprietary Firecone collector design, which uses proven race technology to maximize torque gains right where you'll use them most – in the lower and mid-RPM range. They also include factory-style emission connections, making it easier to hook up your catalytic converters for a cleaner exhaust system and a professional, leak-free installation with the included hardware.

This kit is designed as a direct fit for your Expedition, and it also fits the F-150 and Lincoln Navigator from the same years with the 5.4L 2V engine. You'll want to have your catalytic converters and the rest of your exhaust system ready to connect to these headers. The raw stainless steel finish means you can choose to leave them as-is or have them coated for a different look and added protection.