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Exhaust - 40 series delta flow mufflers - FLOWMASTER

Diesel Truck Exhaust Parts

Diesel truck exhaust systems are unique due to their ability to handle the high pressures and temperatures that diesel engines generate. The right components are critical for optimizing airflow, reducing back pressure, and maintaining emission standards.

Get premium diesel truck exhaust parts designed for power, durability, and performance at Black Diamond Unlimited. Whether you need exhaust kits, pipes, tubes, wraps, sleeves, hangers, clamps, or flanges, our diesel truck exhaust accessories deliver unmatched reliability and precision.

We ensure you have everything you need to enhance your truck’s efficiency and extend its lifespan, whether that’s pipes and tubes for your diesel truck’s exhaust or a completely new system. Trust us for quality parts designed to go the distance.

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Flowmaster 9425400 2.5 IN(C)/OUT(D) 40 SERIES DF

Flowmaster 9425400 2.5 IN(C)/OUT(D) 40 SER..

Brand: Flowmaster

Part Number: 9425400

40 Delta Flow® - 2.50 Center In / 2.50 Dual Out - Aggressive SoundThis two chamber design incorpora..

$133.95

Flowmaster 942542 2.5 IN(C)/OUT(O) 40 SERIES DF

Flowmaster 942542 2.5 IN(C)/OUT(O) 40 SERI..

Brand: Flowmaster

Part Number: 942542

40 Delta Flow® - 2.50 Center In / 2.50 Offset Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 942443 2.25 IN(O)/OUT(O) 40 SERIES DF

Flowmaster 942443 2.25 IN(O)/OUT(O) 40 SER..

Brand: Flowmaster

Part Number: 942443

40 Delta Flow® - 2.25 Offset In / 2.25 Offset Out - Aggressive SoundThis two chamber design incorpo..

$143.95

Flowmaster 942541 2.5 IN(O)/OUT(C) 40 SERIES DF

Flowmaster 942541 2.5 IN(O)/OUT(C) 40 SERI..

Brand: Flowmaster

Part Number: 942541

40 Delta Flow® - 2.50 Offset In / 2.50 Center Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 9425422 2.5 IN(C)/2.25 OUT(D) 40 SERIES DF

Flowmaster 9425422 2.5 IN(C)/2.25 OUT(D) 4..

Brand: Flowmaster

Part Number: 9425422

40 Delta Flow® - 2.50 Center In / 2.25 Dual Out - Aggressive SoundThis two chamber design incorpora..

$133.95

Flowmaster 942543 2.5 IN(O)/OUT(O) 40 SERIES DF

Flowmaster 942543 2.5 IN(O)/OUT(O) 40 SERI..

Brand: Flowmaster

Part Number: 942543

40 Delta Flow® - 2.50 Offset In / 2.50 Offset Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 9425432 2.5 IN(O)/2.25 OUT(D) 40 SERIES DF

Flowmaster 9425432 2.5 IN(O)/2.25 OUT(D) 4..

Brand: Flowmaster

Part Number: 9425432

40 Delta Flow® - 2.50 Offset In / 2.25 Dual Out - Aggressive SoundThis two chamber design incorpora..

$133.95

Flowmaster 942544 2.5 IN(O)/OUT(OSS) 40 SERIES DF

Flowmaster 942544 2.5 IN(O)/OUT(OSS) 40 SE..

Brand: Flowmaster

Part Number: 942544

40 Delta Flow® - 2.50 Offset In / 2.50 Same Side Out - Aggressive SoundThis two chamber design inco..

$133.95

Flowmaster 943040 3 IN(C)/OUT(C) 40 SERIES DF

Flowmaster 943040 3 IN(C)/OUT(C) 40 SERIES..

Brand: Flowmaster

Part Number: 943040

40 Delta Flow® - 3.00 Center In / 3.00 Center Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 9430412 3 IN(O)/2.5 OUT(D) 40 SERIES DF

Flowmaster 9430412 3 IN(O)/2.5 OUT(D) 40 S..

Brand: Flowmaster

Part Number: 9430412

40 Delta Flow® - 3.00 Offset In / 2.50 Dual Out - Aggressive SoundThis two chamber design incorpora..

$129.95

Flowmaster 943042 3 IN(C)/OUT(O) 40 SERIES DF

Flowmaster 943042 3 IN(C)/OUT(O) 40 SERIES..

Brand: Flowmaster

Part Number: 943042

40 Delta Flow® - 3.00 Center In / 3.00 Offset Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 9430422 3 IN(O)/2.25 OUT(D) 40 SERIES DF

Flowmaster 9430422 3 IN(O)/2.25 OUT(D) 40 ..

Brand: Flowmaster

Part Number: 9430422

40 Delta Flow® - 3.00 Center In / 2.25 Dual Out - Aggressive SoundThis two chamber design incorpora..

$133.95

Flowmaster 9430402 3 IN(C)/2.5 OUT(D) 40 SERIES DF

Flowmaster 9430402 3 IN(C)/2.5 OUT(D) 40 S..

Brand: Flowmaster

Part Number: 9430402

40 Delta Flow® - 3.00 Center In / 2.50 Dual Out - Aggressive SoundThis two chamber design incorpora..

$133.95

Flowmaster 943041 3 IN(O)/OUT(C) 40 SERIES DF

Flowmaster 943041 3 IN(O)/OUT(C) 40 SERIES..

Brand: Flowmaster

Part Number: 943041

40 Delta Flow® - 3.00 Offset In / 3.00 Center Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 943043 3 IN(O)/OUT(O) 40 SERIES DF

Flowmaster 943043 3 IN(O)/OUT(O) 40 SERIES..

Brand: Flowmaster

Part Number: 943043

40 Delta Flow® - 3.00 Offset In / 3.00 Offset Out - Aggressive SoundThis two chamber design incorpo..

$133.95

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