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Flowmaster

Flowmaster 40 Series Chambered Muffler

40 Series - 2.50 Dual In / 3.00 Center Out - Aggressive Sound

Part # 425403 Be the first to write a review

Flowmaster 40 Series Chambered Muffler

In Stock
Free Shipping on orders over $150*
MSRP $112.00
$89.96
Save $22.04 (19%)
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5

Emissions

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.

See Emissions Details

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The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

Features:

  • Excellent Street/Strip and Off Road application
  • Noticeable interior resonance
  • Aggressive Sound Exterior Exhaust Tone
  • Durable fully welded 16 gauge aluminized steel
Automotive Item GradeHigh Performance
Body Height4 IN
Body Width9.75 IN
Brand Flowmaster
ColorBlack
Emission Code5
FinishPaint
FitmentUniversal
Inlet Connection TypePipe Connection
Inlet Diameter2.5 IN
Inlet PositionDual
MaterialAluminized Steel
Muffler SeriesOriginal 40 Series
Muffler TypeChambered
Outlet Connection TypePipe Connection
Outlet Diameter3 IN
Outlet PositionCenter
Overall Length19 IN
Product TypeStreet Mufflers
ReversibleNo
Sale CategoryExhaust
ShapeOval
Sound LevelAggressive Sound
Type of MufflerChambered
Vehicle TypeClassic Muscle Car
Late Model Muscle Car
Street Rod
Street/Strip
Truck/SUV
UPC700042038534
California Proposition 65 RequiredNo
Part Number425403
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 - fm_warranty_general.pdf
Instructions - street_applications.pdf
Universal Muffler - Some adaptation may be required.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $1490, excludes clearance parts and oversized packages.

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