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Performance Exhaust, Performance Mufflers, Exhaust Systems, Catalytic Converter, High Performance, Race Magnum, High Flow Converter, Dynomax Exhaust, Super Turbo Muffler, Ultraflo Muffler, Dual Exhaust, Dual Exhausts, Dual Exhaust Pickups, Pickup Dual Exhaust, Truck Dual Exhaust, Truck Dual Exhausts, Magna Flow Mufflers, Magna Flow
   


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Flowmaster Original 40 Series Mufflers

 

Flowmaster Standard 40 Series Mufflers

The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers a powerful “Flowmaster Sound” you’ve heard so much about it. If you really want to hear your exhaust system and that great muscle car tone – from both inside and out of the vehicle – the 40 Series is for you.

 

Application Reccomendations:

  • The original high performance Flowmaster muffler
  • Aggressive sound for the enthusiast you likes their exhaust LOUD
  • Available in either aluminized steel or 409S Stainless
  • Stainless steel mufflers covered by limited lifetime warranty
  • Fully MIG welded for durability


ORIGINAL 40 SERIES
19.00" OAL X 13.00" CASE X 9.75" WIDE X 4.00" THICK

Flowmaster Standard 40 Series Mufflers

Flowmaster Standard 40 Series Mufflers

Flowmaster Standard 40 Series Mufflers
In Out Part
Number
2.25" 2.25" 42441
2.50" 2.50" 42541
3.00" 3.00" 43041
     

In Out Part
Number
2.25" 2.25" 42443
2.50" 2.50" 42543
3.00" 3.00" 43043
     

In Out Part
Number
3.00" 2.50" 430402
     
     
     

ORIGINAL 40 SERIES
19.00" OAL X 13.00" CASE X 9.75" WIDE X 4.00" THICK
In Out Part
Number
409S STAINLESS STEEL
2.25" 2.25" 8042441
2.50" 2.50" 8042541
3.00" 3.00" 8043041
     

In Out Part
Number
409S STAINLESS STEEL
2.25" 2.25" 8042443
2.50" 2.50" 8042543
3.00" 3.00" 8043043
     

In Out Part
Number
409S STAINLESS STEEL
3.00" 2.50" 80430402
     
     
     



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