Universal Air HT399417C HVAC Heater Core

Heater Core for Buick, Cadillac HVAC Repair

Universal Air HT399417C is an aluminum HVAC heater core for select Buick and Cadillac applications. It is built for direct replacement service in vehicles that use this heater core configuration, including the Buick Park Avenue, Cadillac DeVille, and Cadillac Seville.

Key Features

• Aluminum heater core construction
• Direct-fit HVAC replacement for select GM applications
• Fits 1997-2005 Buick Park Avenue, N/A
• Fits 2000-2005 Cadillac DeVille, N/A
• Fits 1998-2004 Cadillac Seville, N/A
• Part number HT399417C for ordering and fitment verification

Product Details

The Universal Air Heater Core Aluminum line focuses on replacement HVAC core service for vehicles that need a heater core matched to the original application. HT399417C is listed for the Buick Park Avenue, Cadillac DeVille, and Cadillac Seville across the model years shown, making it a practical choice for heater performance restoration in these platforms. If you are searching for a heater core for a 1997-2005 Buick Park Avenue or a heater core for a 2000-2005 Cadillac DeVille, HT399417C is the referenced part number.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Loss of cabin heat
• Coolant odor inside the vehicle
• Fogging or film on the windshield from HVAC leakage
• Coolant seepage at the heater core housing
• Uneven or weak heater output

Installation Notes

Verify the vehicle year, make, and model against the listed fitment before installation. Heater core replacement typically requires access to the HVAC case, so confirm the core style and routing before disassembly. Use clean coolant and inspect related hoses, seals, and the HVAC housing during service. For ordering and catalog lookup, reference HT399417C and confirm the application on the vehicle.

Quality Assurance

Universal Air Heater Core Aluminum parts are cataloged for specific vehicle applications to support accurate replacement selection. HT399417C is listed for confirmed fitment on the Buick Park Avenue, Cadillac DeVille, and Cadillac Seville applications shown above.