Diesel Outboards Made for
Marine Performance
Experience the next generation of marine propulsion
Powering safer, more efficient marine operations
Precision-engineered for commercial, government and leisure operators who demand endurance, safety and performance on the water.
Eliminating explosion risk
Safer by design
Unlike petrol engines, the Cox Marine V8 uses compression-ignition diesel technology, eliminating the explosion risk associated with spark ignition. With a higher flashpoint fuel system and durable construction, the V8 enhances safety for crew and vessel, especially in hazardous or high-risk environments.
Cleaner power without compromise
Lower emissions, higher standards
The Cox Marine V8 is the only high-powered diesel outboard to achieve BSO-II certification, alongside EPA Tier 3, IMO II, and RCD II. Emitting just 4.6 g/kWh of combined hydrocarbons and NOx, it outperforms other diesel propulsion systems on environmental impact without compromising on power.
Exceptional range & endurance
Engineered to go the distance
Delivering class-leading torque up to 1,052 Nm and specific fuel consumption as low as 260 g/kWh, the Cox Marine V8 offers exceptional range and endurance. With peak torque achieved at just 2,600 RPM, it provides smooth, controlled power for extended operations and heavy-duty workloads.
1,500 hours commercial warranty
Built to last
Designed from the ground up as a marine-first engine, the Cox Marine V8 is rigorously tested to withstand demanding offshore conditions. Its robust design ensures a longer service life compared to traditional petrol engines and is supported by commercial warranties of up to 1,500 hours.
Energy-recovering UK production
Sustainably manufactured
Assembled at Cox Marine’s Shoreham-by-Sea facility, every Cox Marine V8 outboard undergoes rigorous testing in our energy-regenerative test cells. Rather than wasting the power absorbed during full-load trials, our dynamometer system converts it back into electricity and feeds it into the local grid. This innovative process reduces overall energy consumption and underscores our commitment to efficiency, compliance and long-term cost savings.
Performance Data
Technical Specifications 60° V8
| Power Output | 300 HP (224 kW) |
| Emissions Certifications | EPA 3, IMO II, RCD II, BSO-II |
| Max RPM | 4,000 |
| Displacement | 4.4L (266 cu.in) |
| Dry Weight | 393 kg (866 lbs)* |
| Aspiration | Twin-turbo |
| Gear Ratio | 1.46:1 |
| Shaft Lengths | 25", 30" & 35" |
| Power Output | 350 HP (260 kW) |
| Emissions Certifications | EPA 3, IMO II, RCD II, BSO-II |
| Max RPM | 4,000 |
| Displacement | 4.4L (266 cu.in) |
| Dry Weight | 393 kg (866 lbs)* |
| Aspiration | Twin-turbo |
| Gear Ratio | 1.46:1 |
| Shaft Lengths | 25", 30" & 35" |
Commercial Warranty
12 months
1000 hours
Commercial Warranty+
18 months
1500 hours
Recreational Warranty
5 years
1500 hours
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