BBK Power Plus 65 millimeter Throttle Body for Ford Mustang 3.8L-V6/Ford Truck 4.2L for all BBK 2001-2004 Mustang throttle bodies are designed to increase airflow and improve horsepower from between 7-12 HP depending on the vehicle and application. All BBK performance power plus series throttle bodies are CNC machined from high quality 356 aluminum castings to ensure perfect OEM quality and fit every time. Features like OEM die stamped throttle linkages, double sealed bearings, o ringed throttle shafts, make BBK throttle bodies top of the line in performance and quality.