Flowmaster American Thunder Exhaust for Chevrolet/GMC | FLO186315
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- Have a different car? See all Flowmaster American Thunder Cat-Back Exhausts
- Mild interior drone and aggressive exterior tone
- Catalog Number: Flowmaster 817541
- Fits: Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, GMC Sierra 3500 HD (check fitment chart for compatibility)
Flowmaster American Thunder Cat-Back Exhaust | 817541
Product Specifications:
- Diameter (IN): 4 Inch
- Exhaust Tip Material: Stainless Steel
- Exhaust Tip Size (IN): 4 Inch
- Exhaust Tip Type: Round Angle-Cut
- Exhaust Type: Single
- Exit Position: Split Rear/ Split Side
- Includes Exhaust Pipe Muffler Delete: No
- Includes Exhaust Tip: Yes
- Includes Hardware: Yes
- Includes Muffler: Yes
- Material: Stainless Steel
- Muffler Brand: 50 Series HD
- Muffler Configuration: Single Inlet/ Dual Outlet
- Muffler Quantity: 1
- Outlet Type: Dual
- Required Welding: Yes
- Sound Level: Aggressive
- Type: Cat-Back
Fitment Chart:
| Years | Make | Model | Submodel | Body Type | Bed Length | Liters | Cylinders | Notes |
|---|---|---|---|---|---|---|---|---|
| 2016-2019 | Chevrolet | Silverado 3500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant | |
| 2014-2019 | GMC | Sierra 2500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant | |
| 2011-2019 | Chevrolet | Silverado 2500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant | |
| 2011-2019 | GMC | Sierra 3500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant | |
| 2015 | Chevrolet | Silverado 2500 HD | High Country | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | Chevrolet | Silverado 2500 HD | LT | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | Chevrolet | Silverado 2500 HD | LTZ | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | Chevrolet | Silverado 2500 HD | WT | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | Chevrolet | Silverado 3500 HD | High Country | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | Chevrolet | Silverado 3500 HD | LT | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | Chevrolet | Silverado 3500 HD | LTZ | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | Chevrolet | Silverado 3500 HD | WT | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2015 | GMC | Sierra 2500 HD | Base | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2011-2015 | GMC | Sierra 2500 HD | Denali | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2011-2015 | GMC | Sierra 2500 HD | SLE | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2011-2015 | GMC | Sierra 2500 HD | SLT | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
| 2011-2013 | GMC | Sierra 2500 HD | WT | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | Dual; Dual Rear Same Side Exit; 4.0 in. Dia.; Incl. 3.5 in./3.0 in. Tailpipes/Super 50 Delta Flow Mufflers/4.0 in. Polished Tips; 50 State Legal / California Emissions Compliant |
Chevrolet Silverado 2500 HD exhaust system
The Flowmaster 817541 American Thunder exhaust system delivers exceptional performance for a reasonable price. It is assembled with the best quality parts, each individually crafted and handpicked for the ultimate exhaust flow.
Aggressive tone muffler
The exhaust system includes a 44 series Flowmaster muffler. It is louder than most stock mufflers with a mild interior drone and aggressive exterior tone. It is made of premium grade stainless steel for superb strength and excellent performance.
Optimal Chevrolet Silverado 2500 HD performance
The manufacturer has tested the exhaust system on the dyno and proved its quality, performance, and adherence to industrial standards.
Undeterred exhaust flow
The Flowmaster 817541 American Thunder exhaust system also features a mandrel-bent tubing. This allows the exhaust gases to flow smoothly without any deterrence.
Easy bolt-on fitment
The exhaust system is easy to install. It has factory mounting points for a full bolt-on installation. The purchase includes all installation hardware including clamps and bolts. It is advisable to have a professional do the job for the best error-free fitment.
Made strong to last long on your Chevrolet Silverado 2500 HD
The Flowmaster 817541 American Thunder exhaust system components are made with high-grade steel. It is strong and virtually indestructible. It will withstand years of use to maintain its strength and value.
Limited lifetime warranty
Flowmaster offers a limited lifetime warranty to the stainless steel exhaust systems. A 3-year warranty applies to the aluminized steel exhaust systems. This is a guarantee of superior quality and expert crafting.
Proudly made in the USA
True to its name, the Flowmaster 817541 American Thunder is proudly made in the USA. Expert crafters manufacture each part form the finest and most authentic steel in the industry. The company also creates jobs for thousands of Americans every year and uses locally made materials.