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Flowmaster 842543 40 Series Delta Flow Muffler 2.5" Offset Inlet/Offset Outlet

Sku: FLO 842543

Availability: In stock


Quick Overview

Flowmaster 842543 40 Series Delta Flow Muffler 2.5" Offset Inlet/Offset Outlet


40 Delta Muffler 409S - 2.50 Offset IN / 2.50 Offset OUT

Aggressive Sound

40 Series Delta Flow Muffler, 2.50" IN (O) / OUT (O), Opposite Side Offsets: ea, 409S Stainless Steel

This two chamber design incorporates Flowmasters patented Delta Flow technology. The "Delta" deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 Series. Constructed of 16-gauge 409S Stainless Steel and fully MIG-welded for maximum durability.

  • Durable Fully Welded 409 Stainless Steel
  • Reduced Interior Resonance
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Race Proven Patented Delta Flow Technology

By precisely placing three internal baffles in the case, and welding them to exacting specifications, Flowmasters new 40 series Delta Flow mufflers go a step beyond their original 40 series mufflers. These mufflers not only out-scavenge the originals, but also provide superior reductions in exterior sound levels and resonance, which are transmitted through the exhaust system and into the vehicle. You get all this, plus improved torque and horsepower and that famous Flowmaster sound!


Satisfaction in any product starts with the manufacturers stand behind your purchase. Flowmaster recognizes that fact and extends limited warranties to the original purchaser of its Stainless steel and Aluminizied Mufflers, Kits and other non-race products. Flowmaster warrants these products against defects in materials and workmanship for the period of 10 years from the date of original purchase for stainless steel mufflers. For Aluminized mufflers, kits and other non-race products, the warranty extends for a period of 3 years from the original date of purchase.

Additional Information

SKU FLO 842543
Manufacturer Part Number 842543
Brand Flowmaster
Color No
UPC 700042018390
Size No

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