BBK Power Plus 61mm Throttle Body for F-Series 302/351 for all BBK Ford Truck and RV 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 and new electronic controlled injection molded plastic gear assemblies for the new modern drive by wire applications, make BBK throttle bodies the number one in performance and quality.