Universal Air HT399963C HVAC Heater Core

Heater Core for Honda and Acura Applications

Universal Air HT399963C is an aluminum HVAC heater core for select Honda and Acura vehicles. It is built for direct-fit replacement service in the cabin heating system and is listed for 2008-2015 Honda Accord, 2009-2014 Acura TSX, 2010-2011 Honda Accord Crosstour, and 2012-2015 Honda Crosstour applications.

Key Features

• Aluminum heater core construction
• Direct replacement HVAC heater core for select Honda and Acura models
• Fits 2008-2012 Honda Accord, N/A
• Fits 2009-2014 Acura TSX, N/A
• Fits 2010-2011 Honda Accord Crosstour, N/A
• Fits 2012-2015 Honda Crosstour, N/A
• Part number HT399963C for ordering and fitment reference

Detailed Description

This Universal Air heater core is part of the Heater Core Aluminum product line and is intended for HVAC repair on Honda Accord, Honda Crosstour, Honda Accord Crosstour, and Acura TSX platforms. The aluminum core construction supports heat transfer within the vehicle’s heater box, making HT399963C a practical replacement when the original heater core is leaking, restricted, or no longer delivering consistent cabin heat. If you are searching for a Honda Accord heater core or Acura TSX heater core by part number, HT399963C is the catalog reference to use.

Common Repair Symptoms

• Loss of cabin heat
• Coolant odor inside the vehicle
• Fogging or film on the windshield from heater core leakage
• Uneven or weak airflow temperature from the HVAC system
• Coolant loss traced to the heater core circuit

Installation Notes and Tips

Installation requires access to the HVAC case and should be performed by a technician familiar with heater core replacement procedures. Drain and recover coolant before removal, inspect hoses and seals during service, and verify the HVAC system is bled properly after installation. Confirm vehicle year and model before ordering, especially on 2008-2012 Honda Accord and 2012-2015 Honda Crosstour applications.

Quality Assurance

Universal Air HT399963C is cataloged as a heater core aluminum replacement for the listed Honda and Acura fitments. This part cross-references no additional part numbers in the provided data.