This high quality Rugged Ridge header is extra tough for extreme usage. Flanges are welded 360 degrees to stand up against the hottest conditions. Our polished stainless design gives your engine that new, hot look. All Rugged Ridge headers come with a limited 5 year warranty. Compare the value of these extra high quality headers to any other high end header manufacturer. NOT LEGAL FOR SALE OR USE IN CALIFORNIA or other States adopting CARB standards. RACING OR NON-HIGHWAY USE ONLY.. This polished stainless steel header from Rugged Ridge fits 00-06 Jeep Wrangler with a 4.0L engine.