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FLOWMASTER 40 SERIES ORIGINAL MUFFLERSThe 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.
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40 Series Muffler Table
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IN/OUT | C/C | O/C | C/O | O/O | O/O SAME SIDE |
2.25" | 42441 | 42442 | 42443 | ||
2.50" | 42541 | 42542 | 42543 | ||
3.00" | 43041 | 43043 | |||
409S Stainless Steel Models | |||||
2.25" | 8042441 | 8042443 | |||
2.50" | 8042541 | 8042543 | |||
3.00" | 8043041 | 8043043 |
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IN/OUT | D/C | C/D | D/D | O/D | |
2.25"/2.25" | |||||
2.50"/2.50" | 425404 | ||||
3.00"/2.50" | 430402 | ||||
409S Stainless Steel Models | |||||
3.00"/2.50" | 80430402 |