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The Fleece Performance replacement thermostat housing with auxiliary port is a direct replacement part for model years 2019-2024 RAM with 6.7L Cummins. The auxiliary port is threaded to accept a -10AN (7/8"-14) fitting to allow you to customize your coolant routings and includes port plug FPE-SP-7814. APPLICATION NOTES Direct replacement for thermostat elbow included in our coolant bypass kits: FPE-CLNTBYPS-CUMMINS-19. Direct replacement for 2019-2024 Cummins 6.7L coolant thermostat housing part number 5401899. Auxiliary port is threaded to accept a -10AN (7/8"-14) fitting
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