Cox Diesel Outboards Engineered for Peak Marine Performance

Diesel Outboards Engineered for Peak Marine Performance

Cox Marine provides a superior range of high-powered diesel outboard engines, engineered for exceptional performance, durability, and efficiency. Our precision-built marine engines are designed to meet the rigorous demands of commercial, governmental, and recreational marine applications, offering a compelling alternative to traditional gasoline outboards.

Safer by design

Using compression-ignition diesel technology, the Cox V8 is inherently safer than traditional gasoline engines, which rely on spark ignition. Its higher flashpoint fuel system and rugged construction reduce risk, protecting your crew, vessel, and mission, especially in hazardous or high-threat environments.

Lower emissions, higher standards

The Cox V8 is the only high-powered diesel outboard to earn BSO-II certification, along with EPA Tier 3, IMO II, and RCD II. It produces only 4.6 g/kWh of combined hydrocarbons and NOx, giving it a smaller environmental footprint than other diesel propulsion systems, all without sacrificing power.

Built for extended range

Harnessing a class-leading torque of up to 1,052 Nm and a specific fuel consumption as low as 260 g/kWh, the V8 delivers exceptional range and operational endurance. It reaches peak torque at 2,600 RPM, giving operators smooth, controlled power for long shifts and heavy workloads.

Engineered for durability

As a purpose-built marine engine, the V8 is stress-tested to endure punishing offshore conditions. Its robust architecture ensures a service life that far exceeds traditional gasoline engines, and it's backed by a commercial warranty of up to 1,500 hours.