Cox Powertrain is a privately owned, British company based in Shoreham, UK, founded in 2007.

Cox Powertrain has accomplished a lot over the past decade, from seeing a gap in the market for compact sized diesel engine solutions, through to successfully being recognised as a renowned OEM. Backed by an incredible amount of private investment of circa £100 million, Cox Powertrain were able to bring the concept of a high powered 300hp V8 diesel outboard engine to the market.

The CXO 300

Designed from a blank sheet of paper, specifically for commercial and recreational use, the CXO300 is set to disrupt the marine market, offering a new and exciting option for maritime users. Although unique in design, the CXO300 has been built for purpose and developed according to industry standards making it compatible with controls (NMEA 2000), propellers (1 & 1⁄4 prop shaft), transom bolt pattern and current steering systems.

The CXO300 provides the convenience and flexibility of an outboard but the power and efficiency of an inboard. The commercial rated diesel outboard is not only a new, innovative product but it also promises 30% better fuel efficiency, three times longer life and is the first outboard engine to have a PDM.

Retrofit Compatibility

Although the first of its kind, as the most powerful diesel outboard brought to the market, the CXO300 has been developed to be compatible with existing industry standards – making it as easy to install on a wide range of vessels as any gasoline outboard.


Standard pump diesel


NMEA 2000 compatible


Transom same as current standard


Off the shelf


Compatible with all major brands

Service network

Cox has begun to set a new benchmark for servicing in the marine industry. To do this, Cox has built a global network, partnering with existing, well established marine engine dealers. And with a 24/7 customer support plan in place, Cox is making strides in the right direction in achieving unrivalled customer support for their global customer network.

Alongside the 24/7 customer support network, Cox has developed an online Customer Portal in which Cox customers can access knowledge articles, request assistance or book services. Cox’s global support network is scheduled and dispatched using a Field Service tool, which allows Cox operators to be regularly updated on the progression of their service or assistance request. The Cox Field Service tool also allows Cox’s highly trained technicians access to technical documentation to complete any technical or maintenance appointments efficiently and easily, reducing downtime for operators.

COX in India

West Coast Marine is the authorised distributor of Cox marine diesel outboard engines in India. Get in touch with us to know more.

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