The Hedman Universal Header X-Tension 18701 is a high-quality steel exhaust extension designed for universal placement on vehicles. Produced by Hedman Hedders and available through Summit Racing Equipment, this 23-inch long extension is interchangeable with TD18701 Summit Racing parts. The product carries a manufacturer part number of 18701 and is made with durable steel material. It is important to note that this product includes a California Prop 65 Warning for cancer.