Universal Air HT400042C HVAC Heater Core

Heater Core for Select Impala and XTS Models

Universal Air HT400042C is a replacement HVAC heater core for select Chevrolet Impala and Cadillac XTS applications. It is listed for 2015-2016 Cadillac XTS, 2015-2016 Chevrolet Impala, and 2018-2020 Chevrolet Impala fitments.

Key Features

• HVAC heater core replacement for the Universal Air Heater Core line
• Direct fitment for select Chevrolet Impala and Cadillac XTS vehicles
• Supports cabin heat transfer through the vehicle HVAC system
• Part number HT400042C for ordering and catalog matching
• Fits 2018-2020 Chevrolet Impala, N/A
• Fits 2015-2016 Chevrolet Impala, N/A
• Fits 2015-2016 Cadillac XTS, N/A

Detailed Description

Universal Air HT400042C is an HVAC heater core built for vehicles that use a heater core assembly in the climate control system. This part is cataloged for Chevrolet Impala and Cadillac XTS applications, including 2015-2016 Chevrolet Impala, 2018-2020 Chevrolet Impala, and 2015-2016 Cadillac XTS. If you are searching for a heater core for Chevrolet Impala or a Cadillac XTS heater core replacement, HT400042C provides the correct fitment reference for those model years.

The Universal Air Heater Core line is organized for HVAC service parts, making HT400042C easy to identify when replacing a leaking, restricted, or inefficient heater core. This part number, HT400042C, should be matched to the vehicle year and model before installation.

Common Uses

• Restoring cabin heat output
• Replacing a leaking heater core
• Addressing poor coolant-to-air heat transfer
• Correcting weak or uneven defrost performance tied to heater core issues
• Resolving HVAC odor or fogging concerns caused by heater core failure

Installation Notes

Verify the vehicle year and model against the listed fitment before service. Heater core replacement typically requires access to the HVAC case, so compare the original unit and connections before removal. Use proper cooling system service procedures and confirm the system is fully bled after installation.

Quality Assurance

Fitment is confirmed for the listed applications only: 2018-2020 Chevrolet Impala, 2015-2016 Chevrolet Impala, and 2015-2016 Cadillac XTS. Part number HT400042C should be used as the primary catalog reference during selection.