Current Lead Times: In Stock Engines Ship Same or Next Day - Out of Stock: 1-3 Weeks on Most Long Block Engines; 3-5 Days on Heads – *call us for more exact lead times for your specific build 
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5.9L 1989-1993 Cummins Marine

The 1989–1993 5.9L Cummins marine engine offers solid, dependable performance for a variety of watercraft. Featuring a robust 12-valve design, this engine uses a mechanical fuel system for reliable fuel control without relying on electronics. Its durable cast-iron block and forged internals ensure longevity, even under demanding marine conditions.

With a focus on low-end torque and fuel efficiency, the 5.9L Cummins is perfect for boats requiring power, reliability, and ease of maintenance. Whether for recreational use or commercial applications, this engine delivers the strength and performance needed on the water.

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