Fleece Performance · New
Fleece Performance 98.5-07 Dodge 2500/3500 Cummins Replacement Thermostat Housing w/Aux Port
MPN FPE-CUMM-TH-1318 · Store SKU fpeFPE-CUMM-TH-1318
Supplier stock checked 11/8/2026, 9:34:33 AM UTC. Adding a part does not reserve it.
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Product details
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 coolant routings and includes port plug FPE-SP-7814. APPLICATION NOTES Direct replacement for thermostat elbow included in our coolant bypass kits: FPE-CLNTBYPS-CUMM-0712 and FPE-CLNTBYPS-CUMM-1318. Direct replacement for Cummins part numbers 5283433 and 3943297. Auxiliary port is threaded to accept a -10AN (7/8"-14) fitting. Replacement Thermostat Housing with Auxiliary Port (RAM with 5.9L and 6.7L Cummins) Replacement Thermostat Housing with Auxiliary Port
Manufacturer fitment & guides
Check FPE-CUMM-TH-1318 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y