Universal Air HT400085C HVAC Heater Core

Ram Heater Core Replacement

Universal Air HT400085C is an HVAC heater core for select Ram trucks and chassis cab applications. It is listed for 2019-2021 Ram 1500 and 2019-2020 Ram 2500, Ram 3500, and Ram 4000 models, making it a direct-fit option for common heater core service work.

Key Features

• HVAC heater core for interior heat system repair
• Fits 2019-2021 Ram 1500, N/A
• Fits 2019-2020 Ram 2500, N/A
• Fits 2019-2020 Ram 3500, N/A
• Fits 2019-2020 Ram 4000, N/A
• Universal Air part number HT400085C

Product Details

The Universal Air Heater Core line focuses on replacement HVAC core components for vehicles that need reliable cabin heat restoration. HT400085C is cataloged for Ram 1500, Ram 2500, Ram 3500, and Ram 4000 applications in the listed model years, supporting heater system repair when the original core is leaking, restricted, or no longer transferring heat properly. If you are sourcing a Ram heater core replacement or searching by HT400085C, this part number identifies the correct HVAC heater core application in the fitment data.

Common Repair Symptoms

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Fogging or film on the windshield from heater core leakage
• Coolant loss with no obvious external leak
• Heater performance issues in Ram 1500, Ram 2500, Ram 3500, or Ram 4000 models

Installation Notes

Verify the vehicle year, make, and model against the fitment list before ordering. Heater core replacement typically requires access to the HVAC case, so compare the original unit and inspect related hoses, seals, and coolant condition during service. Confirm the part number HT400085C before installation on Ram 1500, Ram 2500, Ram 3500, or Ram 4000 applications.

Quality Assurance

Universal Air catalogs this heater core as a dedicated HVAC replacement component for the listed Ram applications. No warranty information was provided in the product data.