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Black Diamond Unlimited

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 842443 2.25 IN(O)/OUT(O) DELTA 40 409S

Flowmaster 842443 2.25 IN(O)/OUT(O) DELTA ..

Brand: Flowmaster

Part Number: 842443

40 Delta Flow® Stainless Steel - 2.25 Offset In / 2.25 Offset Out - Aggressive SoundThis two chamber..

$149.95

Flowmaster 842541 2.5 IN(O)/OUT(C) DELTA 40 409S

Flowmaster 842541 2.5 IN(O)/OUT(C) DELTA 4..

Brand: Flowmaster

Part Number: 842541

40 Delta Flow® Stainless Steel - 2.50 Offset In / 2.50 Center Out - Aggressive SoundThis two chambe..

$154.95

Flowmaster 842543 2.5 IN(O)/OUT(O) DELTA 40 409S

Flowmaster 842543 2.5 IN(O)/OUT(O) DELTA 4..

Brand: Flowmaster

Part Number: 842543

40 Delta Flow® Stainless Steel - 2.50 Offset In / 2.50 Offset Out - Aggressive SoundThis two chambe..

$154.95

Flowmaster 8430402 3 IN(C)/2.5 OUT(D) DELTA 40 409S

Flowmaster 8430402 3 IN(C)/2.5 OUT(D) DELT..

Brand: Flowmaster

Part Number: 8430402

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

$154.95

Flowmaster 843041 3 IN(O)/OUT(C) DELTA 40 409S

Flowmaster 843041 3 IN(O)/OUT(C) DELTA 40 ..

Brand: Flowmaster

Part Number: 843041

40 Delta Flow® Stainless Steel - 3.00 Offset In / 3.00 Center Out - Aggressive SoundThis two chambe..

$154.95

Flowmaster 942040 2 IN(C)/OUT(C) 40 SERIES DF

Flowmaster 942040 2 IN(C)/OUT(C) 40 SERIES..

Brand: Flowmaster

Part Number: 942040

40 Delta Flow® - 2.00 Center In / 2.00 Center Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 942440 2.25 IN(C)/OUT(C) 40 SERIES DF

Flowmaster 942440 2.25 IN(C)/OUT(C) 40 SER..

Brand: Flowmaster

Part Number: 942440

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

$133.95

Flowmaster 942442 2.25 IN(C)/OUT(O) 40 SERIES DF

Flowmaster 942442 2.25 IN(C)/OUT(O) 40 SER..

Brand: Flowmaster

Part Number: 942442

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

$133.95

Flowmaster 942041 2 IN(O)/OUT(C) 40 SERIES DF

Flowmaster 942041 2 IN(O)/OUT(C) 40 SERIES..

Brand: Flowmaster

Part Number: 942041

40 Delta Flow® - 2.00 Offset In / 2.00 Center Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 942042 2 IN(C)/OUT(O) 40 SERIES DF

Flowmaster 942042 2 IN(C)/OUT(O) 40 SERIES..

Brand: Flowmaster

Part Number: 942042

40 Delta Flow® - 2.00 Center In / 2.00 Offset Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 942043 2 IN(O)/OUT(O) 40 SERIES DF

Flowmaster 942043 2 IN(O)/OUT(O) 40 SERIES..

Brand: Flowmaster

Part Number: 942043

40 Delta Flow® - 2.00 Offset In / 2.00 Offset Out - Aggressive SoundThis two chamber design incorpo..

$133.95

Flowmaster 942441 2.25 IN(O)/OUT(C) 40 SERIES DF

Flowmaster 942441 2.25 IN(O)/OUT(C) 40 SER..

Brand: Flowmaster

Part Number: 942441

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

$133.95

Flowmaster 9424422 2.25 IN(C)/OUT(D) 40 SERIES DF

Flowmaster 9424422 2.25 IN(C)/OUT(D) 40 SE..

Brand: Flowmaster

Part Number: 9424422

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

$133.95

Flowmaster 942444 2.25 IN(O)/OUT(OSS) 40 SERIES DF

Flowmaster 942444 2.25 IN(O)/OUT(OSS) 40 S..

Brand: Flowmaster

Part Number: 942444

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

$133.95

Flowmaster 942540 2.5 IN(C)/OUT(C) 40 SERIES DF

Flowmaster 942540 2.5 IN(C)/OUT(C) 40 SERI..

Brand: Flowmaster

Part Number: 942540

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

$133.95

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