Cox Powertrain outboard gives 25% more range

Cox said the CXO300 is the world’s first 300hp diesel outboard to have come to the marine market Photo: Cox Powertrain Cox said the CXO300 is the world’s first 300hp diesel outboard to have come to the marine market Photo: Cox Powertrain
Industry Database

Cox Powertrain unveiled its latest diesel outboard at Seawork which promises at least a 25% better range compared to a gasoline outboard and is designed to last up to three times longer.

The final concept of the CXO300 is based on the proven technology of a 4-stroke, V8 architecture. Cox said it is the world’s first 300hp diesel outboard to have come to the marine market.

It has a 100% higher peak torque at the crankshaft than the leading gasoline 300hp outboards and is 60% higher compared to a leading 350hp.  This enables the craft to move more weight more efficiently, reach peak torque and top power more quickly.


Users of equivalent powered diesel inboards will greatly benefit from the flexibility of installing such a robust commercially graded diesel outboard engine.

The CXO300 will deliver a package volume around half that of a state-of-the-art diesel inboard with comparable fuel efficiency.

This brings the added benefits of reduced maintenance and haul out costs and minimised disruption to operation for engine service and repairs.

The CXO300 has been designed and developed in-house from the ground up for professional maritime use in collaboration with Ricardo, one of the world’s leading engineering and environmental consultancies.

Ricardo is highly regarded for its expertise and knowledge in areas such as strict emissions legislation and other environmental regulations in this sector.

Sea trials of the CXO300 will commence in October this year and order books will open in November. The engine will go into full production in the second quarter of 2019.

By Anne-Marie Causer

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