Cummins 4BT3.9 engine for Cummins excavator
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With its simple design, excellent fuel economy, and stable power performance, it is widely used in various industrial and commercial applications, making it one of Cummins' most classic small and medium-sized diesel engines.
Cummins 4BT3.9 Product Specifications
Engine Type: Inline 4-cylinder, 4-stroke, water-cooled diesel engine
Displacement: 3.9 L
Bore × Stroke: 102 mm × 120 mm
Compression Ratio: Approximately 17.3:1
Combustion System: Direct Injection
Boosting: Naturally Aspirated / Turbocharged (variable versions)
Rated Power: Approximately 75–130 hp (56–97 kW) @ 2,500 rpm
Maximum Torque: Approximately 330–500 Nm @ 1,500 rpm
Number of Valves: 8 (2 per cylinder)
Cooling: Water-cooled
Starting: Electric
Dry Weight: Approximately 335–360 kg
Applications: Construction machinery, light trucks, agricultural machinery, industrial generator sets, small marine propulsion
We also offer a full range of Cummins engines, including 4BTA3.9, 6BT5.9, 6CTA8.3, 6LTAA8.9, QSB4.5, QSB6.7, QSL8.9, QSZ13, QSM11, QSX15, NTA855, etc., to meet the power needs of various types of equipment. We provide a one-stop solution to ensure that your equipment always maintains optimal performance.