Universal Air HT400089C HVAC Heater Core

Heater Core for Acura RDX and TLX

Universal Air HT400089C is an HVAC heater core for select Acura applications. It is listed for 2019-2021 Acura RDX and 2021 Acura TLX, making it a direct-fit option for drivers searching for a heater core for 2021 Acura TLX or a replacement heater core for 2019-2021 Acura RDX.

Key Features

• HVAC heater core replacement for the heating system
• Fits 2019-2021 Acura RDX, N/A
• Fits 2021 Acura TLX, N/A
• Universal Air heater core part number HT400089C
• Built for vehicle-specific HVAC service work

Product Details

The Universal Air Heater Core line focuses on replacement HVAC core components for repair and maintenance applications. HT400089C is cataloged for Acura RDX and Acura TLX fitment, and it is the correct type of part when the original heater core is leaking, restricted, or no longer transferring heat properly through the cabin HVAC system. If you are sourcing HT400089C for Acura RDX or Acura TLX heater core replacement, verify the vehicle year and HVAC configuration against the listing before installation.

Common Repair Uses

• Loss of cabin heat
• Coolant odor inside the vehicle
• Sweet smell or dampness from the HVAC case
• Reduced defrost performance
• Heater core leakage or internal blockage

Installation Notes

Heater core replacement typically requires access to the HVAC case and careful handling of coolant lines and interior trim components. Drain the cooling system before removal, inspect related hoses and seals, and confirm the replacement core matches the original layout for the Acura RDX or Acura TLX application. After installation, refill and bleed the cooling system and check for leaks and proper heater output.

Quality Assurance

Universal Air catalogs HT400089C as a dedicated HVAC heater core replacement for the listed Acura applications. Confirm fitment by year and model before ordering to ensure the part matches the vehicle’s original heater core configuration.