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CM4.65 | Craftsman Marine Diesel Engine
Details on the Craftsman Marine CM4.65 diesel engine, power output, key specs, and features to help judge fit for a vessel; a Hyundai-based intercooled diesel for boat builders, dealers, and distributors who need higher output with standard hot-water capability built in.
- Quiet running with less vibration due to a specially designed flywheel.
- Seawater-resistant cast exhaust bend, providing a long and efficient service life.
- Cupronickel heat exchanger resistant to corrosion.
- Air inlet silencer.
- Fitted with an electric fuel lift pump.
- Based on a Hyundai industrial engine, proven worldwide and supported worldwide.
- Air intake with noise-reducing properties.
- Complies with RCD II regulations.
| Basic Engine | Hyundai |
|---|---|
| Cylinders | 4 In Line |
| Cylinder Capacity | 2.607 cm³ |
| Power | 48 kW / 65 hp |
| Max. Engine Speed | 3.000 rpm |
| Max. Torque | 175 Nm |
| Aspiration | Natural |
| Alternator | 110 A / 12 V (Bosch / SEG) |
| Cooling System | Intercooling, With Heat Exchanger |
| Flexible Engine Mounts | CM Type 7 |
| Calorifier Connection | Standard |
| Exhaust Diameter | ø76 mm (ø60 mm optional) |
| Electronic Protection | 10 A Circuit Breaker |
| Stop Solenoid | Energized To Run |
| Max. Installation Angle | 15° (Backwards) |
| Weight | 235 kg |
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| CM465_480 Engine with ZF25 Gearbox |  |
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Applications & Compatibility
The CM4.65 fits larger builds that need real cruising torque and onboard hot water as standard:
- Motor yachts and larger displacement cruisers needing 175 Nm of usable torque
- Workboats and commercial tenders running extended hours at higher loads
- Compatible with the ZF25 gearbox, TMC345 and saildrive configurations
- Repower projects moving up from a CM4.42/CM4.52-class engine
Built for Boat Builders & Dealers
Boat builders scaling up to the CM4.65 are stepping into a higher output class, and Craftsman Marine backs that step with the same kind of support structure as the smaller engines: a Hyundai base with globally available parts, manuals in six languages, and a consistent build spec that suits OEM production and bulk ordering. The distributor network carries that support through to the customer.
Technical Advantages
Moving to intercooling and a standard calorifier changes what the CM4.65 offers a fleet operator, beyond the raw power figures:
- Intercooling with heat exchanger keeps output stable under sustained load
- Standard calorifier connection means onboard hot water without a separate retrofit
- Specially designed flywheel and noise-reducing air intake for quieter running
- Energized-to-run stop solenoid, matched to the engine’s higher output class
Why Choose the CM4.65 Marine Engine
For builders moving up from the CM4.42/CM4.52 range, the CM4.65 delivers real cruising torque and a standard hot-water connection without introducing a new support relationship; the same parts logic and dealer backing carry over.
- Hyundai-based industrial engine platform, proven and supported worldwide
- Cupronickel heat exchanger and seawater-resistant cast exhaust bend for long-term corrosion resistance
- Standard calorifier connection and quiet running from a specially designed flywheel
- Complies with RCD II regulations for recreational craft
- 235 kg build with CM Type 7 flexible engine mounts for straightforward installation
Frequently Asked Questions
Craftsman Marine’s CM4.65 and CM4.80 move to a Hyundai industrial platform at this output level, which supports the larger 2.607 cm³ displacement and standard calorifier connection this class of engine needs.
Yes, unlike the smaller CM2/CM3/CM4.42 range where it’s optional, the calorifier connection is standard on the CM4.65, giving onboard hot water without a separate retrofit.
Both. Documentation covers the ZF25 gearbox, a TMC345 configuration, and a saildrive setup, all listed separately in the Downloads section on this page.
They share the same 2.607 cm³ Hyundai block, weight (235 kg) and mounts, but the CM4.65 is tuned for 48 kW (65 hp) at up to 3,000 rpm versus the CM4.80’s 59 kW (80 hp) at up to 4,000 rpm.
Up to 175 Nm of maximum torque, with natural aspiration and intercooling on a 4 In Line cylinder layout.
Manuals are available in German, English, Finnish, French, Dutch and Norwegian, listed in the Downloads section on this page.