OEM Cummins 4BTA3.9-G diesel engine | Tonkee®

The 4BTA3.9-G is a 3.9-liter, 4-cylinder, turbocharged, and aftercooled engine.

It features a cast-iron block and cylinder head, ensuring robustness and longevity. The engine has a bore of 102 mm and a stroke of 120 mm, resulting in a total displacement of 3.9 liters. The turbocharger provides improved performance by increasing the intake air pressure, which enhances power output and fuel efficiency.

This engine is designed to meet various emissions standards, including Tier 2 and Stage II. It incorporates advanced fuel system technologies, such as a rotary fuel pump and direct fuel injection, to optimize combustion efficiency and minimize emissions. It also features a wastegate turbocharger, which helps regulate boost pressure for optimal engine performance across different load conditions.

The 4BTA3.9-G is a versatile engine, capable of operating in a wide range of ambient conditions. It has a power output ranging from 74 kW (99 hp) to 92 kW (123 hp), depending on the application and specific configuration. The engine offers a peak torque of 405 Nm (299 lb-ft) at 1,500 RPM, providing excellent pulling power and responsiveness.

In terms of cooling, the 4BTA3.9-G utilizes a liquid cooling system with an engine-driven fan.

This ensures efficient heat dissipation and helps maintain optimal operating temperatures. The engine also incorporates a full-flow oil filter and a replaceable spin-on fuel filter to protect vital components from contaminants and extend their service life.

The 4BTA3.9-G engine is known for its fuel efficiency, thanks to its advanced fuel system and efficient combustion design. It offers low fuel consumption, which is crucial for applications where operating costs are a significant concern. The engine operates on diesel fuel, providing high energy density and widespread availability.

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