Universal Air HT399903C HVAC Heater Core

Heater Core for Volkswagen HVAC Repair

Restore cabin heat performance with the Universal Air Heater Core Aluminum, part number HT399903C. This HVAC heater core is a direct-fit replacement for select Volkswagen models, including Cabrio, Golf, Beetle, Jetta, Passat, and Corrado applications.

Built for Volkswagen heating system service, HT399903C supports reliable coolant-to-air heat transfer inside the HVAC case. It is a practical replacement choice for drivers searching for a heater core for 1985-1999 Volkswagen Golf, a heater core for 1985-1998 Volkswagen Jetta, or a heater core for 1990-1997 Volkswagen Passat.

Key Features

• Universal Air Heater Core Aluminum product line
• Part number HT399903C for catalog and service reference
• Aluminum construction for HVAC heater core replacement
• Compatible with select Volkswagen Cabrio, Golf, Beetle, Jetta, Passat, and Corrado models
• Fits N/A position as listed in the fitment data

Detailed Description

The Universal Air HT399903C is an aluminum HVAC heater core made for Volkswagen heating system repair. It is listed for 1995-2002 Volkswagen Cabrio, 1985-1999 Volkswagen Golf, 1998 Volkswagen Beetle, 1985-1998 Volkswagen Jetta, 1990-1997 Volkswagen Passat, and 1990-1995 Volkswagen Corrado. Use this part when servicing a leaking, restricted, or inefficient heater core in the vehicle’s HVAC system. The part number HT399903C is useful when matching the replacement component during diagnosis or ordering.

Common Repair Symptoms

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Moisture on the windshield from HVAC leakage
• Coolant loss traced to the heater core area
• Restricted heat output in Volkswagen Cabrio, Golf, Jetta, or Passat models

Installation Notes and Tips

Verify the vehicle year and model against the listed fitment before installation. Heater core replacement typically requires access to the HVAC case, so inspect related hoses, seals, and coolant condition during service. Confirm the replacement part number HT399903C matches the original component before reassembly.

Quality Assurance

Universal Air heater core components are cataloged for application-specific HVAC service. This part cross-references no additional part numbers in the provided data.