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Flowmaster American Thunder Stainless Steel Dual Exhaust System - Side/Rear Exit (04-08 4.6L F-150)

AmericanTrucks no longer carries the Flowmaster American Thunder Stainless Steel Dual Exhaust System - Side/Rear Exit (04-08 4.6L F-150). Please check out 2004-2008 F-150 Exhaust Systems for an updated selection.
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Features & Details

  • Moderate Flowmaster Super 40 Series Tone
  • Durable 409 Stainless Steel Construction
  • 3 in. Inlet, Dual 2.5 in. Outlet Mandrel-Bent Tubing
  • 3 in. Polished Stainless Steel Tips
  • Bolt-On Installation; Some Trimming May Be Required
  • Choice of Side or Rear Exit
  • Made in the USA
  • Fits All 2004-2008 4.6L F-150s
Head Turning Audio. Turn heads everywhere you drive with this booming audio exhaust put out by the Flowmaster 409S cat-back exhaust system. The kit is made to bring out the best in the powerful Ford F-150 pickup. When installed you'll direct exhaust notes out of the two wide tips at the ends of the dual tailpipe system. Thanks to large pipes and a careful path you'll maximize the sound that your truck puts out for the best without any of the high pitched droning.

A Faster Ride. Your Ford F-150 can be a faster and more effetive ride when you use the Flowmaster 409S cat-back exhaust system to beef it up. While you aren't actually powering up your engine or adding something like a turbocharger ot the mix, you are making your engine run more efficiently. You do this by letting exhaust fumes exit more readily. This creates a cycle of performance that will increase horsepower and torque notably. Exhaust can flow out faster and more easily thanks to the dual tailpipes and wider mid pipe and muffler than the stock truck comes with.

16 Gauge Stainless. This kit is made from 16 gauge stainless steel. The 16 gauge thickness makes this material very durable and long-lasting. That means that you can make use of the kit to enjoy long-term performance without worrying about the pipes breaking on anything other than a very serious impact. The stainless steel composition ensures that the pipes hold out against corrosion over the long term.

Install in Less Time. This kit doesn't use the stock hangers and relies on its own hangers and hardware for installation, but the process is still simple. Fasten the hangers into position and lock the exhaust components in for it to all work. You can get this on in just three or four hours without much issue. If you hire professionals the time required will be lessened and you'll have a product that performs very well too.

Application. Fits 2004 to 2008 Ford F-150 and Lincoln Mark LT truck with a 4.6L or 5.4L engine, fits 2 and 4 wheel drive models and all wheelbases.

Fitment: 2004 2005 2006 2007 2008 Details

MPN# 817417

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Inlet Pipe
  • (1) Extension Pipe
  • (1) Muffler
  • (1) Right Tailpipe
  • (1) Front Left Tailpipe
  • (1) Rear Left Tailpipe
  • (2) Side Exit Pipes
  • (2) Rear Exit Pipes
  • (2) Stainless Tips
  • (1) Ring Clamp Hanger
  • (1) Rear Frame Hanger
  • (1) Rubber Hanger
  • (6) 2-1/2" Clamps
  • (2) 3" Clamps
  • (1) 5/16" x 1-1/4" Bolt
  • (2) 5/16" Flat Washers
  • (1) 5/16" Lock Washer
  • (1) 5/16" Nut
  • (2) 7/16" Hanger Keepers
Installation Info
Tech Specs
Will it fit my F-150?

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Customer Reviews (1) Write a Review

Overall Rating 5

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 5 5
  • Exhaust Note 5 5
  • Fit & Finish 5 5
  • Bang For Your Buck 5 5

  • 5/5

    Installation Time: Afternoon

    January 05, 2017

    Sounds like thunder!

    Talk about the sound. The sound is amazing and really awakes the neighbors. he looks is good too.


    Year: 2008 Engine: 4.6L V8

    Helpful (8)

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