Long Tube Headers w/ High-Flow Catalytic Converters

The Stainless Works Long Tube Headers are engineered to enhance the sound and performance of your 2003-2011 Crown Victoria or Grand Marquis equipped with the 4.6L 2V engine. Constructed from robust 304 stainless steel, these headers utilize CNC mandrel bent tubing, ensuring optimal flow characteristics for improved exhaust scavenging and power output. The primaries measure 1-5/8" in diameter, leading to 3" slip-fit collectors, and are paired with 2-1/2" diameter catted lead pipes designed to seamlessly connect to the factory exhaust system at its flanged connection point. Built for longevity and strength, these headers are fully TIG welded by skilled craftsmen. The system includes EPA-compliant high-flow catalytic converters that enhance exhaust flow while maintaining emissions compliance. The package also contains all necessary hardware, including O2 extensions and clamps, for a direct bolt-on installation with no cutting or modification required. Stainless Works backs this product with a lifetime warranty on material and craftsmanship, and it is proudly made in the USA. **Important Note:** This product is intended **FOR CLOSED COURSE COMPETITION USE ONLY** and is not legal for use in street vehicles or non-racing competition off-road vehicles. Its sale, use, or installation may be illegal nationwide under the Federal Clean Air Act. Purchasing this product requires signing a Vehicle Compliance Waiver. Additionally, the product warning states it may cause Cancer and Reproductive Harm.