Cummins 3019600 Water Pump Oil Seal

This water pump oil seal is engineered to OEM specifications for Cummins B-series 5.9L diesel engines. It functions as a critical barrier between the water pump bearing cavity and the coolant circuit, preventing coolant contamination of bearing lubricant and external coolant leakage. The seal utilizes a radial lip design constructed from high-temperature resistant fluoroelastomer or nitrile rubber compounds to withstand engine operating temperatures and coolant chemistry. Compatible with multiple Cummins 6B5.9 variant part numbers including 3019600, 69139, 3800616, and 3016791. Designed for direct replacement during water pump rebuild or scheduled cooling system maintenance. Applicable to industrial and construction equipment platforms utilizing the Cummins 6B5.9 power unit, such as the Jingong JG150S wheel excavator.