Cummins 4BT / 4BTA 3.9 Specifications
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Cummins 4BT / 4BTA 3.9 Specifications

ConfigurationIn-line 4-cylinder, 4-stroke diesel
Bore & Stroke102 mm x 119 mm (4.02 in x 4.72 in)
Displacement3.9 L (239 in3)
AspirationTurbocharged/Aftercooled (4BTA)
RotationCounterclockwise facing flywheel
  • 4 Cylinder, 3.90 L, Turbocharged Marine Diesel Engine
  • HX or Keel Cooling configurations / Seawater or Jacket Water Aftercooled
  • Simple 12 valve mechanical design with parts pricing that no other engine can touch