Universal Air HT400037 HVAC Heater Core

Heater Core Replacement

The Universal Air HT400037 is a copper HVAC heater core for restoring cabin heat performance in the vehicle’s climate control system. It is part of the Heater Core Copper product line and is built for direct replacement use where the original heater core has failed or become restricted.

• Copper heater core construction for efficient heat transfer.
• HVAC replacement part for the heating and cooling case assembly.
• Universal Air HT400037 identification for catalog and service matching.
• Heater Core Copper line for buyers seeking a copper-core replacement.

Product Details

This HVAC heater core is used to transfer engine heat into the cabin air stream through the heater box. When the original core leaks, clogs, or loses thermal efficiency, the HT400037 provides a service replacement option for the heating system. Universal Air HT400037 is listed as a copper heater core, making it a straightforward choice for repair work on HVAC systems that require this part type.

Common Issues It Can Address

• Loss of cabin heat output.
• Coolant odor inside the vehicle.
• Moisture or coolant leakage from the HVAC case.
• Restricted coolant flow through the heater circuit.
• Uneven or weak defrost performance tied to poor heater output.

Installation Notes

Installation requires access to the HVAC case and proper reconnection of the heater hoses and related components. Verify the part number HT400037 against the original heater core before installation, and confirm the system is fully bled after service to avoid trapped air in the cooling circuit.

Quality Assurance

Universal Air identifies this part as part of its Heater Core Copper line. Confirm fitment and application details against the vehicle’s original HVAC component specifications before ordering.