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Flowmaster 2015-2020 Ford F-150 American Thunder Cat-Back Exhaust System 817725

Flowmaster 2015-2020 Ford F-150 American Thunder Cat-Back Exhaust System 817725
Flowmaster 2015-2020 Ford F-150 American Thunder Cat-Back Exhaust System 817725Flowmaster 2015-2020 Ford F-150 American Thunder Cat-Back Exhaust System 817725Flowmaster 2015-2020 Ford F-150 American Thunder Cat-Back Exhaust System 817725Flowmaster 2015-2020 Ford F-150 American Thunder Cat-Back Exhaust System 817725
$1,559.99 ea
NEWARRIVING SOONEstimated Ship Date 09/05/2025 (If Ordered Today)37 Available from HOLLEY PERFORMANCE PRODUCTS as of 08/19/2025
Model: 4005431
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
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Flowmaster's American Thunder Cat-back exhaust system for the 2015-2020 Ford F-150 is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt-on 409S stainless steel system fits all F-150's with the 2.7L/3.5L Ecoboost, 3.5L TiVCT and 5.0L engines. Features include a 3.00-inch mandrel-bent inlet tube flowing into a Super 40 series performance muffler with dual 2.50-inch mandrel-bent tailpipes. The finishing touch is the polished 3.50-inch stainless steel tips. The system comes with your choice of final tailpipe exits, either out the rear under the bumper for a muscular, or out the sides behind the rear tires if you tow an RV, boat or trailer. Designed for an easy fit, this system includes all necessary parts, hardware for an easy installation you can do at home. Notes: This system fits all 2/4 WD and all Wheelbases, except Standard Cab/Short Bed.
Features:
  • Includes Both Rear and Side Exit Tailpipes
  • Super 40 Series Performance Muffler
  • Uses the Factory Hanger Locations
  • Clears the Factory Spare Tire
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Delta Flow Technology
  • Deep Powerful Sound
  • Mandrel-bent Tubing
  • Easy Installation
Does Not Fit Std Cab/Short Bed or Ford Raptor.
Installation Notes:
Does Not Fit Std Cab/Short Bed or Ford Raptor.
About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
fm_warranty_general.pdf88.58KB
817725_instructions.pdf2.54MB

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Ford F-150 King Ranch 2015 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 King Ranch 2016 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 King Ranch 2017 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 King Ranch 2018 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 King Ranch 2019 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 King Ranch 2020 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 Lariat 2015 3.5L / 213 / V6
2.7L / 164 / V6
5.0L / 302 / V8
Ford F-150 Lariat 2016 3.5L / 213 / V6
2.7L / 164 / V6
5.0L / 302 / V8
Ford F-150 Lariat 2017 3.5L / 213 / V6
2.7L / 164 / V6
5.0L / 302 / V8
Ford F-150 Lariat 2018 3.5L / 213 / V6
2.7L / 164 / V6
5.0L / 302 / V8
Ford F-150 Lariat 2019 3.5L / 213 / V6
2.7L / 164 / V6
5.0L / 302 / V8
Ford F-150 Lariat 2020 3.5L / 213 / V6
2.7L / 164 / V6
5.0L / 302 / V8
Ford F-150 Limited 2016 3.5L / 213 / V6
Ford F-150 Limited 2017 3.5L / 213 / V6
Ford F-150 Limited 2018 3.5L / 213 / V6
Ford F-150 Limited 2019 3.5L / 213 / V6
Ford F-150 Limited 2020 3.5L / 213 / V6
Ford F-150 Platinum 2015 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 Platinum 2016 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 Platinum 2017 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 Platinum 2018 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 Platinum 2019 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 Platinum 2020 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 Police Responder 2019 3.5L / 213 / V6
Ford F-150 Police Responder 2020 3.5L / 213 / V6
Ford F-150 SSV 2016 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 SSV 2017 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 SSV 2018 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 SSV 2019 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 SSV 2020 3.5L / 213 / V6
5.0L / 302 / V8
Ford F-150 XLT 2015 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XLT 2016 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XLT 2017 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XLT 2018 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XLT 2019 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XLT 2020 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XL 2015 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XL 2016 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XL 2017 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XL 2018 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XL 2019 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6
Ford F-150 XL 2020 5.0L / 302 / V8
3.5L / 213 / V6
2.7L / 164 / V6

Specifications:

California Proposition 65 Chemical Name Chromium (hexavalent compounds), Nickel (Metallic)
California Proposition 65 Required Yes
Catalytic Converter Included No
Color Black muffler, natural tubing
Emission Code 5
Exhaust Series American Thunder
Exit Position Dual Out Rear / Dual Out Side
Heat Shield No
Inlet Diameter (in) 3
Material 409 Stainless Steel
Mount Type Flanged
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Super 40 Series
Muffler Type Welded Baffle
Outlet Diameter (in) 2.5
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Shape Oval
Single Dual Dual
Sound Level Aggressive / Moderate
System Type Cat-back
Tip Cut Angle
Tip Diameter (in) 3.5
Tip Edge Style Cut
Tip Finish Polished
Tip Length (in) 13
Tip Logo Embossed
Tip Material Stainless Steel
Tip Quantity 2
Tip Shape Round
Tubing Diameter (in) 2.5
Warranty Limited Lifetime (Lifetime)

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Flowmaster 2015-2020 Ford F-150 American Thunder Cat-Back Exhaust System 817725: