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Flowmaster American Thunder Cat-back Exhaust System

2013-2015 Toyota Tacoma with 4.0L engine. (See Applications below)

Part # 817614
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Delta Flow
This American Thunder® Cat-back system is designed for 2013-2015 Toyota Tacoma trucks with the 4.0L engine. The system is constructed of 409S stainless steel for long-lasting durability and the 2.50-inch mandrel-bent system connects to the catalytic converter with the flanged inlet pipe. It then runs back into a Super 50™ Series muffler and has dual 2.50-inch tailpipes exiting on each side of the vehicle behind the rear wheels. The tailpipes clear the factory spare tire, use the factory hanger locations for an easy installation and are finished off with large 3.50-inch polished stainless steel tips embossed with the Flowmaster® logo. As an American Thunder system, it provides improved horsepower and torque along with a moderate performance sound level both inside and outside of the vehicle. Includes all necessary parts, hardware and instructions for an easy bolt-on installation you can do at home. The system is also covered by our Lifetime Limited Warranty. Note: Fits both 2/4 wheel drive models. Does NOT fit standard cab or X-Runner models.


  • Includes all Necessary Parts and Detailed Instructions
  • Dyno Tuned For Maximum Performance
  • Super 50 Series Performance Muffler
  • Uses the Factory Hanger Locations
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Clears Factory Spare Tire
  • Delta Flow Technology

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Brand Flowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Side Exit
Heat ShieldNo
Inlet Diameter (in)2.5
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler SeriesSuper 50 Series
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualDual
Sound LevelAggressive / Moderate
System TypeCat-back
Tip Diameter (in)3.5
Tip Length (in)13
Tip Quantity2
Tubing Diameter (in)2.5
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817614

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.

Fits 2013-2015 Toyota Tacoma with 4.0L engine. Fits 2/4 wheel drive and all wheelbases, except Standard Cab and X-Runner.

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*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.