Flowmaster American Thunder Muscle Truck Single Exhaust System - 1999-2004 Ford Lightning 5.4L Supercharged Tire Pyrometer Extension Module 12 mm Hex Head

12 mm Hex Head

Free-air calibration may correct drift as a sensor ages

Frame Rail

3-1/2 in Inlet

7L engine with 145-inch Wheelbase only

Flowmaster American Thunder Muscle Truck Single Exhaust System - 1999-2004 Ford Lightning 5.4L Supercharged Tire Pyrometer Extension Module 12 mm Hex HeadFor the person who wants the aggressive look of a NASCAR race truck along with all the benefits that a Flowmaster Cat back exhaust system provides. D. O. S. S. (Dual out same side) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power