Isuzu UM4BG1TCX – 197hp Marinised Propulsion Engine
Isuzu Japan Factory Marinised Propulsion Engine
The ISUZU UM4BG1TCX is a robust, turbocharged, and intercooled marine diesel engine engineered to deliver dependable performance for commercial marine operations. Designed with durability, fuel efficiency, and compliance in mind, it’s a trusted propulsion solution for operators who demand reliability at sea.
Powerful & Efficient Performance
With a 4-cylinder, vertical in-line, 4-cycle diesel configuration, the UM4BG1TCX offers impressive output for its size. It delivers:
- 147 kW (200 PS) at 2800 rpm (Light Duty)
- 134 kW (182 PS) at 2700 rpm (Medium Duty)
This balance of power and efficiency supports a wide range of commercial applications, from workboats to transport vessels.
The engine’s turbocharged and intercooled aspiration enhances performance while maintaining excellent fuel efficiency along the propulsion curve, allowing operators to reduce operational costs without compromising power.
Engineered for Dependability
Built for longevity and ease of maintenance, the UM4BG1TCX incorporates:
- Direct-injection combustion for clean, efficient burning
- Full-flow pressure lubrication ensuring optimum internal protection
- Freshwater cooling with seawater indirect circulation for consistent thermal control in harsh marine environments
- IMO Tier II emissions compliance, demonstrating ISUZU’s commitment to cleaner technology
Weighing 655 kg with the MGN35A marine gear installed, the engine maintains a compact footprint, making it suitable for vessels where space and weight are critical considerations.
Isuzu UM4BG1TCX – Engine Specifications
| Category | Specification |
|---|---|
| Engine Model | UM4BG1TCX |
| Configuration | 4‑cylinder, vertical in‑line, 4‑cycle diesel engine |
| Bore × Stroke | 105 × 125 mm (4.13 × 4.92 in) |
| Displacement | 4.329 L (264 cid) |
| Rated Output – Light Duty | 147 kW (200 PS) / 2800 rpm |
| Rated Output – Medium Duty | 134 kW (182 PS) / 2700 rpm |
| Application | Commercial use |
| Governor Type | Mechanical |
| Combustion Type | Direct injection |
| Aspiration | Turbocharged / Intercooled |
| Exhaust Gas Standard | IMO Tier II |
| Engine Weight (with MGN35A) | 655 kg (1,444 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 circulation) |
| Intercooler | Multi‑tube type (seawater circulation) |
| Rotation Direction – Crankshaft | Right (clockwise) viewed from front of engine |
| Rotation Direction – Propeller Shaft | Right (clockwise) viewed from stern |
| Idling Speed | 550 rpm |
| Marine Gear Model | MGN35A |
| Marine Gear Type | Constant‑mesh type gear (reverse type) |
| Reduction Ratios | 1.97, 2.56, 3.05, 3.45 |
Standard Accessories
- Installation kit
- Kingston valve
- Control head
- Bilge Pump
- Oil drain pump
- Blow-by pipe
- Battery relay
- Extension harness (3 m)
- Instrument panel
- Tool kit
- Owner’s manual
- Seawater pump impeller*
*Spare parts
Optional Accessories
- Extension harness (3 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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