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Delta Flow® 40 Series Muffler by Flowmaster

  • The quietest muffler option in our 40 Series two-chambered line
  • Reduced resonance over 40 series mufflers
  • Stainless Steel 409SS version backed by lifetime warranty
  • Features advanced two-chamber design & Delta Flow technology
  • Available in aluminized steel or 409S Stainless for harsh weather
  • Fully MIG-welded for maximum durability

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Inlet Diameter (in)
  • 2
  • 2.25
  • 2.5
  • 3
Outlet Diameter (in)
  • 2
  • 2.25
  • 2.5
  • 3
Vehicle Type
  • 4/6 CYL Engine
  • Classic Muscle Car
  • Late Model Muscle Car
  • Street Rod
  • Street/Strip
  • Truck/SUV
Inlet Position
  • Center
  • Offset
Material
  • 409 Stainless Steel
  • Aluminized Steel
Outlet Position
  • Center
  • Dual
  • Offset
  • Offset (Same Side)
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