Upgrade your Ford F-150 with these stainless steel exhaust headers engineered for 1999–2004 Lightning and Harley-Davidson 5.4L V8 Supercharged models. Featuring a 4-2-1 racing spec design, the headers improve exhaust flow and reduce backpressure for better engine efficiency. Built with 1.625-inch inlets and 2.375-inch outlets, they deliver high airflow and enhanced performance. The CNC-machined flanges and TIG-welded construction ensure precision fitment, strength, and long-lasting durability. With a polished stainless finish and direct bolt-on fit, these headers are a reliable, high-performance upgrade for your F-150’s exhaust system.