Pacesetter Performance Y Pipes improve exhaust flow, resulting in increased horsepower and torque, eliminating a bottleneck in the exhaust system. Made in the USA! This item is used in conjunction with the Pacesetter Long Tube Headers (part 70-2226). If you are not using Pacesetter Long Tube Headers, this part will not fit. The part number for this item is 82-1153 and it fits 1997-2003 Ford F150 4.6 and 5.4 2WD models with Pacesetter 70-2226 LONG TUBE Headers.