📦 Product Description

The Cummins 4BTA3.9-GM65 is a compact, fuel-efficient, and robust marine auxiliary diesel engine designed to meet the demands of modern commercial vessels. Delivering 65kW (87 HP) at 1800 RPM, this 4-cylinder engine is turbocharged and aftercooled to ensure consistent performance, improved thermal efficiency, and minimal fuel consumption.

Manufactured by Dongfeng Cummins Engine Co., Ltd., the 4BTA3.9-GM65 is widely used in marine generator sets, hydraulic power packs, and shipboard auxiliary systems where reliability, size, and fuel economy matter most. Its simple design and global Cummins support network make it a preferred choice for shipbuilders and fleet operators.

📊 Specifications

✅ Product Advantages

• Compact Power Solution: Ideal for small to medium vessels requiring reliable auxiliary output.
• Turbocharged & Aftercooled: Delivers optimal air-fuel mixture for efficiency and longevity.
• Low Fuel Consumption: Only ~17 L/h at 100% load, supporting long operational hours and low OPEX.
• Proven Platform: Part of Cummins’ legendary 4B series, widely adopted across marine sectors.

• Durable & Maintainable: Built for marine environments with easily serviceable components.

🔧 Key Features

• 4-cylinder inline diesel engine with 3.9L displacement
• Turbocharged and aftercooled for enhanced combustion
• BYC A / GAC governor with ≤3% regulation precision
• Capable of operating at ambient temperatures down to -12°C
• Optional configurations for keel or heat exchanger cooling
• High-performance lube and cooling systems for marine use

• Reliable start-up with 12V/24V electric systems and low cranking resistance

🚢 Applications

The Cummins 4BTA3.9-GM65 Marine Auxiliary Power System is suitable for a wide range of marine auxiliary applications:

• Marine Generator Sets (Gensets)
• Hydraulic Power Packs
• Firefighting and Emergency Pumps
• Shipboard Electric Supply Systems

• Deck Machinery and Support Equipment

📦 Product Availability

The Cummins 4BTA3.9-GM65 is available globally via Dongfeng Cummins authorized dealers and marine equipment integrators. Optional accessories such as control panels, cooling kits, and marine-class certified packages can be provided on request. Full aftersales service and parts support are available worldwide through Cummins’ global network.