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Move heat out of your Cummins ISB or B-Series engine with the Cummins Engine Water Pump Kit. Water-pump service on the intended engine families is the role of the Cummins 6687709. The pump circulates coolant through the block and cylinder head so absorbed engine heat can travel to the radiator instead of remaining concentrated around hot components. Using the correct pump keeps coolant flow, mounting, and drive details aligned with the engine rather than relying on an improvised substitute.
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