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Kit Includes:
Fitment:
Improve cooling-system reliability on your 2019-2024 Ram 2500 or 3500 6.7L Cummins with the Fleece Performance Coolant Bypass Kit. Part FPE-CLNTBYPS-CUMMINS-19 adds a secondary, temperature-actuated thermostat to improve coolant circulation at the rear cylinders, where coolant temperatures can be highest. By helping maintain more consistent temperatures across all six cylinders, this complete kit helps reduce excessive cooling-system pressure and the risk of freeze-plug failures.