Universal Air HT400003C HVAC Heater Core - Front

Heater Core for Nissan and Infiniti Applications

Universal Air HT400003C is an aluminum HVAC heater core for select Nissan Armada, Nissan TITAN, and INFINITI QX56 applications. It is built for front heater core service where the original unit has developed leaks, restricted flow, or poor heat output.

Key Features

• Aluminum heater core construction
• Direct-fit HVAC heater core replacement for select Nissan and INFINITI vehicles
• Fits 2005-2015 Nissan Armada, front
• Fits 2004-2015 Nissan TITAN, N/A
• Fits 2004-2010 INFINITI QX56, front
• Part number HT400003C for ordering and fitment reference

Product Details

This Universal Air Heater Core Aluminum line part is intended for HVAC heater core replacement in vehicles that rely on the heater core to transfer engine heat into the cabin air stream. The HT400003C application coverage includes 2005-2015 Nissan Armada, 2004-2015 Nissan TITAN, and 2004-2010 INFINITI QX56. If you are searching for a Nissan Armada heater core aluminum replacement or an INFINITI QX56 front heater core, HT400003C matches those listed applications.

This part cross-references no additional part numbers in the provided data.

Common Issues Addressed

• Loss of cabin heat
• Coolant odor inside the vehicle
• Heater core seepage or leakage
• Restricted coolant flow through the HVAC core
• Uneven or weak defrost performance caused by poor heater output

Installation Notes and Tips

Verify the vehicle year, make, model, and heater core position before installation. On Nissan Armada and INFINITI QX56 front heater core applications, access typically requires HVAC system disassembly, so confirm the replacement part number HT400003C before removing the original unit. Flush the cooling system and inspect hoses, clamps, and coolant condition during service.

Quality Assurance

Universal Air Heater Core Aluminum parts are cataloged for specific HVAC replacement applications and identified by part number HT400003C for accurate ordering and fitment verification.