Isuzu UM6HE1TCX – 344hp Marinised Propulsion Engine
Isuzu Japan Factory Marinised Propulsion Engine
The ISUZU UM6HE1TCX is a high‑performance marinised diesel engine engineered for demanding commercial marine environments. Built on ISUZU’s proven reputation for durability and efficiency, this 6‑cylinder, turbocharged, and intercooled powerhouse delivers consistent output, low fuel consumption, and long‑lasting reliability—making it an ideal choice for operators who demand performance they can depend on.
Robust Power and Efficiency
With a 7.127‑litre displacement and mechanically governed direct‑injection system, the UM6HE1TCX delivers strong, reliable torque across the full operating range.
- Rated Output:
- Medium duty: 235 kW (320 PS) @ 2700 RPM
- Light duty: 257 kW (350 PS) @ 2800 RPM
Its turbocharger and intercooler combination ensures optimal combustion efficiency, improved fuel economy, and dependable performance, even under heavy load.
Engineered for Demanding Marine Environments
Designed specifically for marine propulsion, the UM6HE1TCX includes:
- Freshwater cooling with seawater indirect circulation
- Multi‑tube heat exchanger for reliable cooling performance
- Wet, multi‑plate hydraulic marine clutch
- Constant‑mesh type marine gear (MGN40G) with reduction ratios of 2.33, 2.91, or 3.45
The engine is fully compliant with IMO Tier II emissions standards, ensuring clean operation that meets international marine regulations.
Isuzu UM6HE1TCX – Engine Specifications
| Engine Model | UM6HE1TCX |
|---|---|
| Configuration | 6‑cylinder, vertical in‑line, 4‑cycle diesel engine |
| Bore × Stroke | 110 × 125 mm (4.33 × 4.92 in) |
| Displacement | 7.127 L (434 cid) |
| Rated Output (Medium Duty) | 235 kW (320 PS) @ 2700 rpm |
| Rated Output (Light Duty) | 257 kW (350 PS) @ 2800 rpm |
| Application | Commercial use |
| Governor Type | Mechanical |
| Combustion Type | Direct injection |
| Aspiration | Turbocharged / Intercooled |
| Exhaust Emission Status | IMO Tier II |
| Engine Weight (with MGN40G) | 898 kg (1,980 lb) |
| Fuel Type | Diesel fuel |
| Starter | 24 V – 4.5 kW |
| Alternator | 24 V – 50 A |
| Lubrication Method | Full-flow pressure circulation |
| Cooling Method | Freshwater, full-flow pressure circulation (seawater indirect) |
| Heat Exchanger | Multi‑tube type (freshwater + seawater) |
| Intercooler | Multi‑tube type (seawater circulation) |
| Rotation Direction (Propeller Shaft) | Right (clockwise) viewed from stern |
| Idling Speed | 550 rpm |
| Marine Gear Model | MGN40G |
| Marine Gear Type | Constant‑mesh type gear (reverse) |
| Clutch Type | Wet, multi‑plate hydraulic type |
| Reduction Ratios | 2.33, 2.91, 3.45 |
Standard Accessories
- Installation kit
- Bilge pump
- Oil drain pump
- Kingston valve
- Control head
- Blow‑by pipe
- Battery relay
- Instrument panel
- V‑belt *
- Extension harness (5 m)
- Tool kit
- Seawater pump impeller *
- Owner’s manual
* Spare parts
Optional Accessories
- Extension harness (5 m)
- Control cable (4 m, 6 m, 10 m, 12 m)
- Stop cable (4 m, 6 m, 8 m)
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Zenith Engineering
Zenith Engineering provides general engineering services to local and interstate customers. In our workshop we have access to CNC machinery and manual lathes. With our highly experienced engineering team and ...
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