×

PLEASE NOTE: As of August 1, 2023 our Windsor location will no longer be open for Walk-In Traffic

877.352.5355 Contact Us Mon-Fri 10a-6p & Sat 10a-3p EST
DRIVEN BY CARE

Flowmaster 2015-2018 Ford Mustang American Thunder Axle Back Exhaust System 817748

Flowmaster 2015-2018 Ford Mustang American Thunder Axle Back Exhaust System 817748
Flowmaster 2015-2018 Ford Mustang American Thunder Axle Back Exhaust System 817748Flowmaster 2015-2018 Ford Mustang American Thunder Axle Back Exhaust System 817748Flowmaster 2015-2018 Ford Mustang American Thunder Axle Back Exhaust System 817748Flowmaster 2015-2018 Ford Mustang American Thunder Axle Back Exhaust System 817748
$1,066.99 ea
NEWARRIVING SOONEstimated Ship Date 10/16/2023 (If Ordered Today)13 available from HOLLEY PERFORMANCE PRODUCTS as of 09/23/2023
Model: 4005448
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
Flowmaster's American Thunder Axle-back exhaust system for the 2015-2018 Ford Mustang is perfect for the person looking for a moderately aggressive sound level outside of the car, while maintaining a mild sound level inside, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR (Dual Out Rear) emissions-legal system for cars with the 2.3L EcoBoost or 3.7L V6 engine features 3.00in inlet pipes that flow into a pair of Super 10 series mufflers for maximum performance. The system is built out of 409S stainless steel and utilizes 4.00in polished Stainless Steel Flowmaster embossed tips. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation. Note: This system fits hardtops and convertibles.
Features:
  • Premium Flowmaster Quality
  • Mandrel Bent Tubing
  • Limited Lifetime Warranty
  • Aggressive Exterior Exhaust Tone
  • Incl. Hangers and Hardware For Easy Installation
  • Axle Back System
  • Dual Out Rear Exit
  • Dyno Tuned for Maximum Performance
Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
Installation Notes:
Fits 2015-2021 Ford Mustang with 2.3L Ecoboost and 3.7L engines. Fits Coupes and Convertibles.

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
FM_Warranty_General.pdf88.58KB
NAFTA_COO-2013.pdf105.94KB
817748.pdf323.54KB
817748_instructions.pdf928.13KB

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 Fitment Notes
Ford Mustang EcoBoost Premium 2015 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang EcoBoost Premium 2016 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang EcoBoost Premium 2017 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang EcoBoost Premium 2018 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang EcoBoost 2015 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang EcoBoost 2016 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang EcoBoost 2017 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang EcoBoost 2018 2.3L / 140 / L4 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang V6 2015 3.7L / 227 / V6 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
Ford Mustang V6 2016 3.7L / 227 / V6 Dual; Dual Rear Exit; 3.0 in. Outlet; Super 10 Delta Flow Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant

Specifications:

2WD/4WD RWD
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
California Proposition 65 Chemical Name 1 Nickel (Metallic)
California Proposition 65 Chemical Name 2 Chromium (hexavalent compounds)
California Proposition 65 Required Yes
Catalytic Converter Included No
Color Black
Emission Code 5
Exhaust Series American Thunder
Exhaust Type Dual
Exit Position Dual Rear
Exit Style Straight
Heat Shield No
Heat Shield Attached No
Inlet Diameter 3.500 in.
Inlet Diameter (in) 3
Inlet Inside Diameter 3.000 in.
Material Stainless Steel
Mount Type Flanged
Muffler Count 2
Muffler Part Number Kit Only
Muffler Quantity 2
Muffler Series Super 10 Series
Muffler Type Welded Baffle
Outlet Diameter 3.000 in.
Outlet Diameter (in) 3
Outlet Outside Diameter 3.000 in.
Part Type Exhaust System Kit
Shape Oval
Single Dual Dual
Single or Dual Dual
Sound Level Moderate
System Type Axle Back
Tail Pipe Diameter 3.000 in.
Tip Cut Angle
Tip Diameter 4.000 in.
Tip Diameter (in) 4
Tip Edge Style Cut
Tip Finish Polished
Tip Length 5.250 in.
Tip Length (in) 5.25
Tip Logo Embossed
Tip Material Stainless Steel
Tip Quantity 2
Tip Shape Round
Tip Type Double Wall
Tubing Diameter 3.000 in.
Tubing Diameter (in) 3
Tubing Material Stainless Steel
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm
Warranty Limited Lifetime (Lifetime)

Reviews:

Write a Review
* Your Name:
* Email (This will not be displayed)
* Rating:
Comments:

Ask a question about

Flowmaster 2015-2018 Ford Mustang American Thunder Axle Back Exhaust System 817748:
Mustang Depot 2023