Cox Marine

Cox Marine is pioneering the diesel outboard revolution with the CXO300, the world's most powerful production diesel outboard.

Designed specifically for commercial, military, and long-range offshore applications, Cox engines offer up to 30% better fuel efficiency compared to gasoline equivalents and a service life that far exceeds traditional outboards. Their engineering is distinctive for its vertical-crankshaft V8 architecture and a unique twin-turbocharger setup that delivers massive low-end torque (up to 650Nm). Built in the United Kingdom, Cox Marine focuses on 'heavy-duty' durability, providing a safer, more reliable alternative for professional operators who require the high torque and safety of diesel fuel in an outboard form factor. They represent a total rethink of marine propulsion, bringing automotive diesel sophistication to the global maritime market.