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Flowmaster

Flowmaster Pro Series Muffler

Part # 13516101 Be the first to write a review

Pro Series Muffler - 3.50 Center In / 3.50 Center Turn Down Out -Moderate Sound

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Inlet Inside Diameter

Outlet Inside Diameter

Body Length

Flowmaster Pro Series Muffler

Estimated Ship Date: 06/30/2026
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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.

Features:

  • High horsepower apps include diesels/RVs/trucks
  • Durable fully welded 16 gauge stainless steel case
  • 409 Stainless Steel Internal Construction
  • Race Proven Design
Body Diameter6.00 IN
Body Height6.00 IN
Body Length16.00 IN
Body Material409 Stainless Steel
Body Width6.00 IN
Brand Flowmaster
California Proposition 65Yes
CategoryExhaust
Clamps IncludedNo
ColorBlack
Emission Code5
Exhaust Tip ConnectionWelded
Exhaust Tip Quantity1
FinishHigh-Temperature Paint
FitmentUniversal
Grade TypePerformance
Hanger IncludedNo
Heat Shield AttachedNo
Inlet ConnectionSlip-Fit
Inlet Diameter3.50 IN
Inlet Inside Diameter3.50 IN
Inlet LocationCenter
Inlet Outside Diameter3.63 IN
Inlet Quantity1
Inlet TypeClamp-On
Weld-On
Muffler SeriesPro Series
Muffler TypeLaminar Flow
Outlet ConnectionSlip-Fit
Outlet Inside Diameter3.50 IN
Outlet LocationCenter
Outlet Outside Diameter3.63 IN
Outlet Quantity1
Outlet TypeSingle
Overall Length22.00 IN
part typeExhaust Muffler
Product TypeRace Products
ReversibleNo
ShapeRound
Sound LevelModerate
Sub CategoryMufflers
TunableNo
Universal Or Specific FitUniversal
Vehicle TypeRace
UPC700042021369
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
Part Number13516101
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.
Instructions - Flowmaster Warranty 26 Update.pdf
Instructions - street_applications.pdf
Universal Muffler - Not a direct fit. Some adaptation required.

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