2004 Dodge Ram 2500 Diesel - Flowmaster Pro Series Muffler 14020100YouTube Button

Flowmaster Pro Series Muffler

Pro Series Muffler - 4.00 Center In / 4.00 Center Out - Moderate Sound

PART# 14020100

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$238.95   Suggested Retail
$193.46   Holleydays Price
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Universal Muffler - Not a direct fit. Some adaptation required.


The Pro Series mufflers work on all applications ranging from street trucks, diesel pullers and RV pushers to every class of racing on dirt or asphalt. During development, at the dyno and track, the Pro Series mufflers consistently delivered performance that is equal to or surpasses open pipe systems, while dramatically reducing sound levels across the RPM range.


  • High horsepower apps include diesels/RVs/trucks
  • Race Proven Design
  • 409 Stainless Steel Internal Construction
  • Durable fully welded 16 gauge stainless steel case


Body Height (in)9
Body Length (in)20
Body Width (in)9
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Emission Code5
Inlet4 inch center
Inlet Diameter (in)4
Inlet PositionCenter
MaterialStainless Steel
Muffler SeriesPro Series
Outlet4 inch center
Outlet Diameter (in)4
Outlet PositionCenter
Product TypeStreet Mufflers
Sound LevelModerate Sound
Type of MufflerLaminar Flow
Part Number14020100


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.

Tech Resources

Universal Muffler - Not a direct fit. Some adaptation required.



    *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.

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