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Supplier details checked 2026-09-23 · Test catalog
2004-2008 Ford F-150 and Lincoln Mark LT truck with 4.6L, 5.4L engine. - Aggressive to moderate sound
Flowmaster American Thunder Cat-back Exhaust System
Features a Specially Designed Super 40 Series Performance Muffler
Includes Hangers and Hardware for an Easy Installation
Mandrel bent 16-gauge Aluminized Steel Tubing
Dual 3.00-inch Polished Stainless Steel Tips
Moderately Aggressive Exterior Sound
Dyno Tuned for Maximum Performance
Uses the Factory Hanger Locations
Includes Dual Tailpipe Exits
Lifetime Limited Warranty
Easy Installation
Fits 2004-2008 Ford F-150 and Lincoln Mark LT truck with 4.6L or 5.4L engine, fits 2/4 wheel drive models and all wheelbases.
Flowmaster 04-08 Ford F150 American Thunder SS Exhaust System
0408 FORD F150 AMT DORS 409S
SYS 04-08 FORD F150
This Flowmaster American Thunder® cat-back exhaust system for the 2004-2008 Ford F-150 and Lincoln Mark LT trucks with the 4.6L or 5.4L engines, is perfect for the person looking for a deep aggressive exterior sound with a moderate interior tone, and with all of the performance benefits that you would expect from Flowmaster®. This bolt-on DOR/DOS (Dual Out Rear or Dual Out Side) emissions-legal exhaust system features 16-gauge mandrel-bent stainless steel tubing flowing into a specially designed Super 40™ Series performance muffler with dual 2.50-inch stainless steel tailpipes which use the factory hanger locations for an easy installation. The tailpipes exit either behind the rear wheels, which is ideal for towing, or straight out the back under the rear bumper for a muscular look. The system is finished off with a pair of large 3.00-inch polished stainless steel tips. The exhaust system is covered by our Lifetime Limited Warranty and includes all necessary parts and hardware for an easy installation you can do at home. For those who prefer all aluminized steel construction with a 3-year Limited Warranty, check out exhaust system #17417. Note: Fits 2/4 wheel drive models all wheelbases.
SYS 04-08 FO
