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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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    40 Series Delta Flow

    Flowmaster’s Delta Flow 40 Series two chamber design incorporates Flowmaster’s Delta Flow technology. The “Delta” deflectors generate increased scavenging for better performance and reduced interior sound. Perfect for vehicles where an aggressive exterior tone is desired with reduced interior tone.