Nissens 77631 HVAC Heater Core

Nissens HVAC Heater Core for Hyundai Accent

The Nissens 77631 HVAC heater core is built for 2006-2011 Hyundai Accent applications and uses an aluminum core with aluminum tanks for efficient heat transfer. Brazed cooling fins support consistent cabin heat output in a compact OE-style layout.

Key Features

• Fits 2006-2011 Hyundai Accent, N/A
• Aluminum core material and aluminum tank construction
• Brazed cooling fins for durable thermal performance
• Core dimensions: 5.7100 in. height, 9.1300 in. length, 0.7900 in. width
• Pipe included for application-specific installation
• Part number 77631 for heater core replacement lookup

Detailed Description

Built by Nissens, part number 77631 is an HVAC heater core engineered for the 2006-2011 Hyundai Accent. The aluminum core and aluminum tank design helps transfer heat efficiently through the HVAC system, while brazed cooling fins provide a stable construction suited to everyday heating demands. This heater core is a direct-fit replacement for Accent models in the listed years and is a practical choice when restoring cabin heat performance. This part cross-references OE-style numbers such as 971381E000 and 971381E001 for the same application.

Common Problems It Can Help Solve

• Weak or uneven cabin heat in a Hyundai Accent
• Coolant odor inside the vehicle from heater core leakage
• Fogging or film on the windshield caused by HVAC coolant seepage
• Reduced defrost performance during cold weather
• Heat output loss caused by a restricted or damaged heater core

Installation Notes and Tips

Verify the vehicle year before ordering and confirm the HVAC layout matches the listed application. Inspect hoses, seals, and coolant condition during replacement, and flush the cooling system if contamination is present. The included pipe supports application-specific installation, but always compare the original unit and connection points before assembly.

Quality Assurance

Nissens develops thermal management components for aftermarket use with a focus on consistent manufacturing quality and OE-style fitment standards. Part number 77631 is produced to support reliable heater core replacement on the Hyundai Accent platform.