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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 for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
|Body Height||4.000 in.|
|Body Length||13.000 in.|
|Body Width||9.500 in.|
|Inlet Connection Type||Pipe|
|Inlet Diameter||2.500 in.|
|Inlet Inside Diameter||2.500 in.|
|Inlet Outside Diameter||2.500 in.|
|Main Piping Diameter||OEM|
|Muffler Series||Original 40 Series|
|Outlet Diameter||2.500 in.|
|Outlet Outside Diameter||2.500 in.|
|Outlet Type||Dual Outlet|
|Overall Length||19.000 in.|
|Title||Flowmaster 425404 40 Series Muffler - 2.50" IN(D)/OUT(D) - Aggressive Sound|
*Some manufacturer restrictions apply.
Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.
Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.
For 2004 Audi A4
The best modders use Wheelwell to build their dream rides.