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Cummins 4BT 3.9L Marine Remanufactured Diesel Engine by USEP

Cummins 4BT / 4BTA 3.9L Marine Remanufactured Diesel Engine

Application: Marine (Recreational & Light Commercial Propulsion)

Cummins Remanufactured 4BT/4BTA 3.9L marine diesel engine, fully remanufactured by US Engine Production (USEP). This compact and efficient inline 4-cylinder engine is based on the legendary B-series platform (a 6BT minus two cylinders), known for its durability, simplicity, and fuel efficiency. Features a robust mechanical fuel injection system. Ideal for smaller vessels, repowers, and light commercial applications. Available in Turbocharged (4BT) or Turbocharged/Aftercooled (4BTA) configurations.

Detailed Specifications

Power150-155 hp (112 kW) @ 2800 RPM
Displacement3.9 L (239 cu in)
ConfigurationIn-line 4-cylinder, 4-stroke diesel
Bore & Stroke102 mm x 120 mm (4.02 in x 4.72 in)
AspirationTurbocharged (4BT) / Turbocharged & Aftercooled (4BTA)
Fuel SystemMechanical Injection Pump
RotationCounterclockwise facing flywheel

*Specifications may vary based on exact configuration and application. Contact us to confirm details for your needs.

Warranty Information

All Cummins remanufactured engines sold by US Engine Production are backed by a comprehensive manufacturer warranty. Specific terms depend on the engine model and application.

For marine applications, this engine typically comes with a 1 year warranty.

Standard warranty coverage applies. Please inquire for specifics.

Please contact us or refer to the official Warranty Page for full details and conditions.

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