Facts About Generators

Cummins/Onan B5.9-230G Engine

The Cummins/Onan B5.9-230G is a 5.9 L 6-cylinder engine rated at 2800 rpm, producing up to 172 kW. It powers generator sets from Cummins/Onan. It holds 4 L (1.1 gal) of oil and 9.9 L (2.6 gal) of coolant.

Engine specifications

Oil capacity4.0 L
Coolant capacity9.9 L
Displacement5.9 L
Cylinders6
Rated speed2800 rpm

Generator sets powered by this engine