Cummins 4BT 3.9 And 6BT 5.9 Oil Pumps are used in Cummins 3.9L 5.9L diesel, The Lubricating Oil Pump is a critical component of an engine’s lubrication system. As the name suggests, it is responsible for pumping oil throughout the engine to ensure that all moving parts are properly lubricated and protected from wear and tear. The pump is typically driven by the engine itself, either directly or through a gear train, and draws oil from the oil pan or sump before delivering it to various parts of the engine via a network of channels and passages. The Lubricating Oil Pump must be designed to operate reliably under high pressures and temperatures, as well as withstand exposure to contaminants such as dirt and debris that can enter the oil system over time.

We carry oil pumps for Cummins 3.9 and 5.9 liter engines. If you do not see the B Series part you need, please use our quote request form or call us at +86 18027472559. our friendly sales staff will gladly help you.