Diesel outboards powering premium leisure marine adventures

Experience safe, efficient and eco-friendly propulsion for unforgettable days on the water.

Designed for premium recreational conditions

Built for Leisure

The V8 diesel outboard combines exceptional power delivery, smooth operation, and impressive fuel economy, raising the bar for recreational propulsion

Engineered for diverse environments

Whether navigating the coastal waters of Florida, cruising the bays of California, or enjoying inland lake and river adventures, our outboards are designed to perform reliably in every marine environment

Backed by a nationwide network

With a comprehensive support network covering key US regions, Cox Marine ensures that your vessel receives the local dealer support, rapid service, and technical expertise you need – whenever and wherever you cruise.

The Recreational Advantages of Cox Marine Diesel Outboards

  • Safety first

    Compression-ignition diesel eliminates the spark-ignition risk of gas engines, ensuring a safer experience in busy marinas and when maneuvering in confined harbors.

  • Extended cruising range

    With up to 30 per cent better fuel efficiency than petrol alternatives, our outboards let you travel further and stay out longer – ideal for extended coastal cruises or adventurous fishing trips.

  • Low maintenance, high enjoyment

    Robust marine engineering and extended service intervals mean less time on upkeep and more time spent enjoying the water.


May 2024
More Government and Commercial Choose Cox Marine Diesel Outboards

Cox Marine diesel outboard completed successful in-field validation tests by the US Navy, exceeding expectations with its performance. The trials, conducted on a 9m RIB, showcased the engine's smoothness, low noise, and absence of smoke, qualities that impressed Naval Sea Systems Command (NAVSEA) testers. This achievement aligns with the US Navy's goal of improving combat readiness, crew safety, and equipment supportability.

Cox Marine diesel outboards have garnered worldwide interest from civil and government agencies operating fleets of fast response vessels. It offers exceptional performance and greater range than equivalent 300hp gasoline outboards, complying with NATO's single-fuel policy. Cox's engineering team, led by Stephen Moore, has developed the highest power density outboard ever created for a marine application, providing the performance and efficiency of an inboard with the convenience of an outboard.

 

In Sweden, Cox's high-performing engine has also made a significant impact, especially among professional users such as the navy, maritime rescue, and coastguard. The CXO300's impressive performance and capabilities were showcased at the Marstrand Boat Show and All at Sea events, generating enthusiastic feedback and interest from customers. Peter Nauwerck, CEO of Diesel Power AB, Cox's Sweden distributor, highlighted the engine's suitability for government agencies requiring robust and safe engines for long-range operations.

Diesel outboards, like Cox's CXO300, combine the endurance, torque, and fuel efficiency of inboard stern drives with the flexibility and replicability of outboards, making them ideal for commercial and government operators. Cox Diesel models are specifically designed for commercial users, offering reliability, endurance, flexibility, and agility for a wide range of vessels and applications, from harbor work to coast guard and search and rescue operations.