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Flowmaster

Flowmaster 40 Series Chambered Muffler

40 Series - 2.50" IN(D)/OUT(D) - Aggressive Sound

Part # 425404 Be the first to write a review
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$94.46
Suggested Retail
$105.00
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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:

  • No internal packing to blowout
  • Excellent Street/Strip and Off Road application
  • Aggressive Sound Exterior Exhaust Tone
  • Durable fully welded 16 gauge aluminized steel

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Automotive Item GradeHigh Performance
Body Height (in)4
Body Length (in)13
Body Width (in)9.5
Brand Flowmaster
ColorBlack
Emission Code5
FinishPaint
FitmentUniversal
Inlet Connection TypePipe Connection
Inlet Diameter (in)2.5
Inlet PositionDual
MaterialAluminized Steel
Muffler SeriesOriginal 40 Series
Muffler TypeChambered
Outlet Connection TypePipe Connection
Outlet Diameter (in)2.5
Outlet PositionDual
Overall Length (in)19
Product TypeStreet Mufflers
ReversibleNo
ShapeOval
Sound LevelAggressive Sound
Type of MufflerChambered
Vehicle TypeClassic Muscle Car
Late Model Muscle Car
Street Rod
Street/Strip
Truck/SUV
UPC700042026029
California Proposition 65 RequiredNo
Part Number425404
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.

Universal Muffler - Some adaptation may be required.
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