The Cummins B Series is available in 4 and 6 inline cylinders. Because of the popular 3.9 and 5.9 liter models, it is known as the "one liter per cylinder" engine.
Cummins B Series diesel engines are used in various marine, military, construction and highway applications. They appeared in light-duty trucks in 1989 with the Dodge Ram.
We carry a large assortment of new and remanufactured parts for 4BT 3.9 and 6BT 5.9 diesel engines.
For more information on B Series engines, please visit our Cummins engine specifications page.