Flowmaster 40 Series Delta Flow Mufflers

Flowmaster’s Delta Flow 40 Series two chamber design incorporates Flowmaster’s patented 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.

 Application Recomendations:

• The quietest 40 Series two-chamber muffler
• Reduced resonance over other 40 series mufflers
• Stainless steel 409S version backed by a lifetime warranty
• Features advanced two-chamber design & Delta Flow technology
• Available in aluminized steel or 409S Stainless for harsh weather
• Both styles are fully MIG-welded for maximum durability

40 SERIES DELTA FLOW 19.00" OAL X 13.00" CASE X 9.75" WIDE X 4.00" THICK
In/Out Part Number 2.00" 942040 2.25" 942440 2.50" 942540 3.00" 943040	In/Out Part Number 2.00" 942041 2.25" 942441 2.50" 942541 3.00" 943041	In/Out Part Number 2.00" 942042 2.25" 942442 2.50" 942542 3.00" 943042	In/Out Part Number 2.00" 942043 2.25" 942443 2.50" 942543 3.00" 943043
40 SERIES DELTA FLOW 19.00" OAL X 13.00" CASE X 9.75" WIDE X 4.00" THICK
In Out Part Number 2.00" 2.00" 9420402 2.25" 2.00" 9424402 2.25" 2.25" 9424422 2.50" 2.00" 9425402 2.50" 2.25" 9425422 2.50" 2.50" 9425400 3.00" 2.25" 9430422 3.00" 2.50" 9430402	In Out Part Number 2.00" 2.00" 9420412 2.25" 2.00" 9424412 2.50" 2.00" 9425412 2.50" 2.25" 9425432 3.00" 2.50" 9430412	In Out Part Number 2.25" 2.25" 942444 2.50" 2.50" 942544 3.00" 3.00" 943044
40 SERIES DELTA FLOW 19.00" OAL X 13.00" CASE X 9.75" WIDE X 4.00" THICK
409 S STAINLESS STEEL In Out Part Number 2.25" 2.25" 842440	409 S STAINLESS STEEL In Out Part Number 2.25" 2.25" 842441 2.50" 2.50" 842541 3.00" 3.00" 843041	409 S STAINLESS STEEL In Out Part Number 2.25" 2.25" 842442	409 S STAINLESS STEEL In Out Part Number 2.25" 2.25" 842443 2.50" 2.50" 842543 3.00" 3.00" 843043
40 SERIES DELTA FLOW 19.00" OAL X 13.00" CASE X 9.75" WIDE X 4.00" THICK
409 S STAINLESS STEEL In Out Part Number 3.00" 2.50" 8430402 3.00" 2.25" 8430422