Diesel outboard solutions for commercial maritime operations
Safer, cleaner and more efficient diesel outboards for professional operations.
Engineered for professional performance
From offshore energy and tourism to port operations and passenger ferries, Cox Marine diesel outboards are powering vital marine activity. Built for the harshest conditions and the highest standards, our outboards deliver the reliability, safety, and fuel economy commercial operators demand.
The Cox Marine V8 diesel outboard has been designed to offer a direct replacement for gasoline engines with none of the safety concerns or inefficiencies.
Whether you’re transferring crew to offshore oil rigs, running a ferry service in the Caribbean, or managing tourism along the US coasts, Cox Marine delivers the power and support you need.
The commercial advantage of diesel
Safety first
In oil and gas zones and other hazardous environments, gasoline outboards pose an ignition risk. Our compression-ignition diesel outboards eliminate this risk, making them the preferred choice for high-risk applications.
Longer operating range
With greater fuel efficiency than gasoline alternatives, Cox Marine outboards let you travel further and operate longer – ideal for tourism boats, spill response vessels, and long-haul fishing trips along extensive US waterways.
Low maintenance, high uptime
With extended service intervals and robust engineering, the V8 is designed to reduce downtime and lower total operating costs – a crucial factor for busy fleets operating from the Gulf to the Pacific Northwest.
Trusted across sectors
Cox Marine diesel outboards are already in use across a range of sectors:

Oil & gas
Safer propulsion for support vessels, spill response and crew transfers in offshore environments.

Passenger & Tourism
Reliable and efficient transport solutions for water taxis, inter-island ferries and shuttle services.

Maritime & Crew Transfer
Port authorities, pilot boats and harbour craft benefit from high torque, efficiency and durability.

Fishing & aquaculture
High torque at low RPM supports commercial fishing and aquaculture activities across European waters.
Designed for demanding conditions
Built for commercial use
The V8 is the most powerful diesel outboard on the market, delivering up to 1,052 Nm of torque and up to 350 hp. It’s also certified to the latest environmental standards, including IMO II, RCD II, and EPA Tier 3.
Supports your local market
With diesel outboard demand rising in the US, our commercial focus ensures tailored support, market readiness, and regional expertise.
Backed by a global network
With service centers and technical partners across more than 175 territories, Cox Marine offers responsive support wherever you operate.

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