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Cummins Marine Engine Crankshafts

Your marine engine is a complex system — in order for the engine to run, every component must function with precision. Without functioning components, your boat's engine may begin to lose performance or stop working altogether. Because the parts that make up the engine operate under extreme heat and stress, they can break and wear down over time.

When you need to find replacement parts for your Cummins engine, Diesel Pro Power can help. We offer Cummins crankshafts and crankshaft replacement parts to get your boat back on the water.

The Function of a Diesel Engine Crankshaft

The crankshaft plays an essential role in your marine engine's operation. Working in conjunction with other components, the crankshaft converts the reciprocating motion of the piston into the rotating motion of the propeller. Other parts of the engine rely on the crankshaft's rotation, so a broken crankshaft can stall the engine and interfere with your boat's utility.

Cummins Marine Crankshaft Replacement Parts

Crankshafts can fail due to factors like fatigue, heavy vibration and hydraulic lock, so you may need to repair or replace them on occasion. Instead of searching a store for the right component, consider ordering the Cummins crankshaft you need from Diesel Pro Power. We ship worldwide within 24 hours, so you can begin repairs soon after noticing a problem. Search our huge inventory by part number or engine series to find the exact component for the job.

B Series Cummins Crankshafts

Engines in the Cummins B series include ISB and QSB engines as well as the 4B 3.9, 4BT 3.9, 4BTA 3.9, 6B 5.9, 6BT 5.9 and 6BTA 5.9 models. We offer new crankshaft assemblies for these engines in addition to seal kits, shell sets, expansion plug kits and vibration dampers.

C Series Cummins Crankshafts

In our selection, you can find Cummins diesel crankshafts, crankshaft seal kits, gaskets and other vital components for QSC, ISC, 6C 8.3, 6CT 8.3 and 6CTA 8.3 marine engines. We back all these components with our 100% quality guarantee, so you can feel confident that you will receive defect-free parts that meet OEM standards.

855 Series Cummins Crankshafts

For engines in the 855 series, we provide new crankshafts, lower gasket sets, seal kits and standard and oversize shell sets. We have options for both Small Cam and Big Cam engines.

K Series Cummins Crankshafts

It's important to find the right components for the job when repairing or replacing the crankshaft in your K series engine. Our selection includes crankshafts, oil seals, shell sets and gear cover gaskets, all at some of the industry's best prices. Whether you need a part for a KTA 19, KTA 38, KTA 50 or QSK 19, you can rely on Diesel Pro Power to get you what you need quickly.

Order Your Cummins Marine Diesel Crankshaft Today

If you're not sure what specific Cummins crankshaft components you need, our knowledgeable customer care team can answer your questions and recommend a solution. Order a replacement crankshaft through our easy-to-use website today. You can also contact us online or call 888-433-4735 in the U.S. or 305-545-5588 internationally.

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