Dong - I Marine Gearboxes & Transmissions

Dong-I marine gearboxes delivering reliability, flexibility as premium brands, without compromising on quality for 74 - 1549 Hp medium- og high-speed engines.

Dong I - A smarter alternative

Dong-I gearboxes offers reliability and robustness – but at a lower cost and with more built-in functionality. Those who know Dong-I Gearboxes, all say the

We have extensive experience and proven success in Denmark, the Netherlands, and other markets supplying Dong-I gearboxes to fishing vessels, tugboats, and marine workshops. They are widely preferred for Volvo, Cummins, CAT, Scania, and John Deere engines—specifically due to the advantages mentioned above and the overall cost efficiency.

We are happy to discuss Dong-I gearboxes and answer any questions you may have. Please contact us at +45 75 12 70 44 and ask for our sales department.

Compatible engines and flexible configurations

Dong-I gearboxes can be matched with engines from Scania, Volvo, John Deere, CAT, IVECO, Perkins, Yanmar, AGCO, ABC, and more.

They also allow you to optimize the complete engine package with additional options such as: Standard features include forward and reverse gear on all models. Optional equipment includes electronic or mechanical shift valves, live PTO, dual-stage coupling, and trolling valve, among others.

Everything you would normally expect – is included as standard.

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The Perfect Gearbox Replacement

Are you working on a new engine installation – or replacing an older marine gearbox? Maybe you’re a dealer or a workshop handling marine engines and propulsion systems. Dong-I delivers reliable, high-quality marine gearboxes for medium- to high-speed engines. With a wide range of ratios and configurations, we can find the exact gearbox that fits your application. Get in touch with us and see what Dong-I can offer for your specific setup. 

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Dong-I – built in South Korea

All Dong-I gearboxes are manufactured in South Korea in a modern, professional factory with full control over assembly, testing, quality assurance, and ethical sourcing. Using Dong-I typically reduces the total engine-package cost by 5–10% compared to other gearbox brands – something our customers really appreciate. For those who know the brand, Dong-I stands for quality and trust.

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West Diesel – over 20 years of experience

West Diesel has supplied Dong-I gearboxes for more than 20 years, and they are our go-to choice when delivering propulsion engines. We’ve delivered Dong-I gearboxes for Vessel rebuilds, Fishing vessels, Workboats, and many other marine applications - With a strong track record and no recurring issues.

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Contact

Rasmus Sørensen

COO

[email protected]
+45 76 11 41 62