Isuzu 4BG1 Marine Engine (1500RPM)

The Isuzu 4BG1 is an inline four-cylinder, water-cooled four-stroke turbocharged mechanical diesel engine, equipped with mechanical inline plunger fuel injection pump without complex electronic control components. Calibrated for stable continuous operation at 1500 rpm, widely used as marine main propulsion engine or supporting marine generator on fishing boats, cargo vessels, work boats.

Adopts wet cylinder liner design, easy for overhaul onboard. Cooling system optimized for marine circulation water cooling configuration. The mechanical fuel system features strong fuel adaptability and low failure rate under long-duration constant-speed operation. Marine version reserves standard output connection interfaces to match marine reduction gearboxes and alternator assemblies, adapting to humid, salt-spray marine operating environments.

Product Advantages

Stable Constant-Speed Marine Performance

• Dedicated 1500rpm fixed-speed calibration, stable power output with small fluctuation under sustained marine load.
• Mature mechanical injection structure, fewer electronic vulnerable parts, low breakdown risk during long-time voyage.
• Good anti-overload performance to cope with complex navigation conditions such as waves and variable loads.

Low Maintenance & High Adaptability for Vessel

• Simplified overall layout, convenient for daily inspection, servicing and onboard field overhaul.
• Global complete spare parts supply network, low parts procurement cost.
• Adaptable to ordinary marine diesel, suitable for coastal, inland river and overseas marine market.

Professional Marine Matching Design

• Optimized vibration control structure to reduce vibration during long-term constant-speed navigation.
• Flexible assembly form, compatible with marine reduction gearbox and marine generator configurations.
• Enhanced sealing and anti-corrosion design, better adaptability to high humidity and salt spray marine environment.

Technical Specifications