Flowmaster American Thunder Direct Fit Muffler - Flowmaster (818204)

Sale Price$718.35
Description : Flowmaster's® American Thunder Direct-Fit Muffler exhaust system for the 2025 - 2026 RAM 1500 with the 3.0-liter High Output engine gives you a great value packed way to help you customize your RAM 1500 to your personality. This performance muffler system fits both 2/4 Wheel drive models and is manufactured from 409 stainless steel for years of trouble-free service and performance. Features include a 3.00-inch inlet pipe leading into a 409 stainless steel Super 10 based muffler for great sound and maximum performance. The dual exit muffler then connects to the factory tailpipes for a simple and effective performance upgrade. Max dyno gains of 13 hp and 12 lb-ft at the rear wheels deliver power you can feel. The system uses all the factory hanger locations and connections for an easy installation that you can do at home. Kits include installation instructions and all necessary hardware. Backed by Flowmaster's Lifetime Limited Warranty.
Fits 2025 - 2026 RAM 1500 3.0L High Output, American Thunder Direct-Fit muffler exhaust system, 409 stainless steel
2025 RAM 3.0L HO AMT DIRECT FIT MUFFLER
MUFF DF ASMB
Fits 2025 - 2026 RAM 1500 3.0L High Output, American Thunder Direct-Fit muffler exhaust system, 409 stainless steel
2025 RAM 3.0L HO AMT DIRECT FIT MUFFLER
MUFF DF ASMB
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Product Details
Installation GuideDescription
Flowmaster's® American Thunder Direct-Fit Muffler exhaust system for the 2025 - 2026 RAM 1500 with the 3.0-liter High Output engine gives you a great value packed way to help you customize your RAM 1500 to your personality. This performance muffler system fits both 2/4 Wheel drive models and is manufactured from 409 stainless steel for years of trouble-free service and performance. Features include a 3.00-inch inlet pipe leading into a 409 stainless steel Super 10 based muffler for great sound and maximum performance. The dual exit muffler then connects to the factory tailpipes for a simple and effective performance upgrade. Max dyno gains of 13 hp and 12 lb-ft at the rear wheels deliver power you can feel. The system uses all the factory hanger locations and connections for an easy installation that you can do at home. Kits include installation instructions and all necessary hardware. Backed by Flowmaster's Lifetime Limited Warranty.
Fits 2025 - 2026 RAM 1500 3.0L High Output, American Thunder Direct-Fit muffler exhaust system, 409 stainless steel
2025 RAM 3.0L HO AMT DIRECT FIT MUFFLER
MUFF DF ASMB
Fits 2025 - 2026 RAM 1500 3.0L High Output, American Thunder Direct-Fit muffler exhaust system, 409 stainless steel
2025 RAM 3.0L HO AMT DIRECT FIT MUFFLER
MUFF DF ASMB
Features & Benefits
- 3.0-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation
- An tuned Super 40 series style chambered muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow
- Max increases of up to 18 hp and 15 lb-ft over the stock exhaust at the wheels
- Lifetime Limited Warranty
- Tuned performance muffler offers quality sound inside and outside of the truck
Part Number (MPN)
818204
Brand
SKU
818204
UPC / GTIN
090127960738 / 00090127960738
Condition
New
Body Height
5.00
Body Length
10.75
Body Material
409 Stainless Steel
Body Width
10.00
Brand
Flowmaster
California Proposition 65 Chemical Name
Nickel (Metallic)<br />Chromium (hexavalent compounds)
Catalytic Converter Quantity
0
Clamping Type
Flat Band
Clamps Included
Yes
Emission Code
5
Exhaust Series
American Thunder
Exhaust Tip Quantity
Sold Separately<br />0
Exit Position
DOR
Exit Style
Dual Out Rear
Finish
High-Temperature Paint
Gasket Or Seal Included
No
Grade Type
Performance
Hangers Included
Yes
Heat Shield Attached
No
Inlet Inside Diameter
2.75
Inlet Location
Dual
Inlet Outside Diameter
2.88
Inlet Position
Dual
Inlet Quantity
2
Inlet Type
Flanged
Main Piping Diameter
3.00
Material
409 Stainless Steel
Mount Type
Uses Factory Hangers
Mounting Bracket Included
No
Muffler Body Height
5.00
Muffler Body Length
13.50
Muffler Body Length (in)
13.5
Muffler Body Material
409 Stainless Steel
Muffler Body Shape
Oval
Muffler Color
Black
Muffler Finish
Painted
Muffler Inlet Diameter
3
Muffler Inlet Location
dual
Muffler Material
409 Stainless Steel
Muffler Outlet Diameter
3
Muffler Outlet Location
dual outlet
Muffler Overall Length (in)
59
Muffler Part Number
Kit Only
Muffler Quantity
1
Muffler Series
Super 40
Muffler Shape
Oval
Muffler Type
Reflection
Outlet Inside Diameter
2.75
Outlet Location
Dual
Outlet Outside Diameter
2.88
Outlet Position
Dual
Outlet Quantity
2
Outlet Type
Slip-Fit
Overall Length
59
part type
Exhaust Muffler Assembly
Pipe Material
409 Stainless Steel
Product Type
Exhaust System
Single Dual
Dual
Sound Level
Aggressive
Spring Bolt Kit Included
No
System Type
Direct-Fit Muffler
Tip Finish
N/A
Tip Style
Not Included
Tubing Diameter
3.00
Tubing Diameter (in)
3
Tubing Material
Uses factory hangers
Vehicle Type
Truck/SUV
Warning
California Proposition 65
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|---|---|---|---|
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission
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Operated by RevolutionParts Inc · Effective date: 11/2025 · Last updated: 4/2026... Check out our Shipping Policy for more details.
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