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Flowmaster American Thunder Cat-Back Exhaust Kit for 03-07Cummins Diesel 19101FM

Flowmaster American Thunder Cat-Back Exhaust Kit for 03-07Cummins Diesel 19101FM

For the person who wants to maximize the power and mileage potential of their diesel pickup without having to put up with excessive noise inside the truck, these S.O.S. (Single out side) exhaust systems are the perfect choice. Featuring patented Flowmaster core design muffler technology, you can expect a moderate exterior tone and mild to moderate interior sound level. Especially well suited for heavy load and towing applications, these systems deliver! Like all Flowmaster products, the benefits include improved mileage, power, and throttle response. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
Moderate Sound exterior exhaust tone
Includes hangers and hardware for easy installation
Dyno tuned for maximum performance
Mandrel bent 16 Gauge Tubing


Fits 2003 to 2007 Dodge 2500 and 3500 truck with a 5.9L Cummins Diesel engine, fits 2 and 4 wheel drive and all wheelbases.

Flowmaster has its roots in solving the engine noise problems encountered by California racers in the 1980s. In 1983 Flowmaster’s founder, Ray Flugger, created his first patented design of racing silencers, which dampened noise with minimal loss of power. Ray attached handles to ease carrying the square shaped race mufflers through the race pits, and the mufflers became known as the "suitcase mufflers." Today, the innovative Flowmaster mufflers are the result of years of development with top race engine builders, thousands of hours of dyno research and "real-world" on-track testing.

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