Cummins 206457 O-Ring Seal Water Pump

The Cummins 206457 O-ring seal is a genuine OEM component designed for water pump sealing on Cummins KT and QSK series heavy-duty diesel engines. Manufactured from high-temperature resistant fluorocarbon (FKM) elastomer to withstand engine coolant temperatures and pressures. This seal ensures reliable coolant containment in the water pump assembly, preventing external leakage and maintaining cooling system integrity during extended operation cycles. Engineered to meet Cummins original equipment specifications for dimensional accuracy, compression set resistance, and chemical compatibility with heavy-duty coolant formulations. Direct replacement for Cummins part number 206457 across KTA19, KTA38, KTA50, QSK19, QSK38, QSK50, QSK60, and QSK78 engine platforms used in power generation, marine propulsion, mining haul trucks, and construction equipment.