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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...

The Fleece Performance replacement thermostat housing with auxiliary port is a direct replacement part for model years 1998.5-2007 RAM with 5.9L Cummins and 2013-2018 RAM with 6.7L Cummins.  The auxiliary port is threaded to accept a -10AN (7/8"-14) fitting to allow you to customize your c...