SKU: 84120887082

Flowmaster American Thunder Cat-back Exhaust System - 817663

Sale price$1009.98 Regular price$1122.20
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Description

Flowmaster American Thunder Cat-back Exhaust System - 8176631998 2003 Ford F 150 with 4. 6L or 5. 4L engine. Fits both 2 4 wheel drive models. Aggressive sound Part Number: 817663 Flowmaster's American Thunder cat back exhaust system for the 1998 2003 Ford F 150 pickup truck is perfect for the person looking for an aggressive exterior sound level with all of the performance benefits that you would expect from Flowmaster. This system allows you the choice of either dual out the rear exit tailpipes, or dual out

1998-2003 Ford F-150 with 4.6L or 5.4L engine. Fits both 2/4-wheel drive models. - Aggressive sound

Part Number: 817663

Flowmaster's American Thunder cat-back exhaust system for the 1998-2003 Ford F-150 pickup truck is perfect for the person looking for an aggressive exterior sound level with all of the performance benefits that you would expect from Flowmaster. This system allows you the choice of either dual out the rear exit tailpipes, or dual out the sides behind the rear wheels, which is perfect for towing. The bolt-on 409S stainless steel system fits both the 4.6L and the 5.4L V8 engines and features a Super 40 Series performance muffler and dual 2.50-inch mandrel-bent tailpipes finished off with a pair of large 3.50-inch polished stainless steel tips. This system is designed to fit all 2/4 wheel drives, all wheelbases and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

Features and Benefits

• Large 3.50-inch Polished 304 Stainless Steel Tips
• Dual Outlet Super 40 Series Performance Muffler
• Mandrel-bent Stainless Steel Construction
• Aggressive Exterior Performance Tone
• Uses the Factory Hanger Locations
• Multiple Exit Styles Provided in Kit
• Clears the Factory Spare Tire
• Lifetime Limited Warranty
• Moderate Interior Tone
• Easy Installation

Fits 1998-2003 Ford F-150 with 4.6L or 5.4L engine. Fits both 2/4-wheel drive models.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 84120887082

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4.1 ★★★★★
Based on 6 reviews
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Verified Purchase
Gordon
Grantham, US
★★★★★ 4
Happy happy
Not bad kind of pricey that's all definitely would buy from them again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
A
Verified Purchase
Adrian Galindo
Grantham, US
★★★★★ 5
Hooked up 2 car amps. Works Great!!
Ordered up 2 of those under the car seat woofers with the built in amps. Installed this power distribution bus bar system, ran both amps through it and it works great. Super easy to install, holds up very well so far with solid connections, fits almost anywhere it’s not big, makes it easy to clean up the wires and make them look nice and neat, and it’s well worth the cost. Just remember if you do decide to hook up multiple amps or even just one that you are using the right size gauge wire, fuses, and the right terminals if needed. I saw that somebody melted theirs and I’m guessing it was not a clean install and probably had it fused and wired incorrectly. Overall super happy with the product, well worth the price, very durable, and I highly recommend it.
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Reviewed in the United States on February 14, 2026
M
Verified Purchase
mtech
Lowell, US
★★★★★ 5
VERY NICE,GREAT PRICE
I do not think you will find a better distribution block at this price. It really does look great and even comes with a complete extra set of set screws and allen wrenches
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
E
Verified Purchase
Eduin Rodriguez
Birmingham, US
★★★★★ 5
Clean and Safe Wiring
Installed this distribution block in my home car audio system and it works great. It helped organize my power wiring and made the setup look much cleaner. The connections feel secure and the fuse protection is a nice bonus. Check my videos to see the real setup and testing.
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Reviewed in the United States on May 15, 2026
J
Verified Purchase
Jay Boz
Carnegie, US
★★★★★ 4
Great product! Slightly longer than I’d like to remove the ferrules
Great product works as described, mounted without any problems, only issue I ran into was removing the pre inserted ferrules from the block to utilize a larger gauge wire. Outside of that it’s a great and definitely would purchase again
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Reviewed in the United States on December 1, 2025

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