Nissens 77657 HVAC Heater Core

Nissens 77657 Heater Core for Hyundai Santa Fe

Nissens 77657 is an aluminum HVAC heater core built for 2007-2009 Hyundai Santa Fe applications. It uses aluminum core and tank construction with brazed cooling fins to support efficient heat transfer and consistent cabin heat output.

• Aluminum core material for thermal efficiency
• Aluminum tank material for corrosion-resistant construction
• Brazed cooling fins for durable heat exchange performance
• Pipe included for direct replacement setup
• Fits 2007-2009 Hyundai Santa Fe, N/A

Built for HVAC Heat Transfer

This Nissens heater core is engineered as a direct-fit HVAC replacement for the Hyundai Santa Fe heater circuit. The aluminum construction helps manage heat transfer inside the HVAC case, while the brazed fin design supports stable airflow across the core. Part number 77657 is also referenced for the same application under OE cross-reference 971382B000 and Spectra Premium 99320.

Common Problems It Can Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Fogging caused by heater core leakage
• Restricted heat output from a clogged core
• Loss of heater performance in a 2007-2009 Hyundai Santa Fe

Installation Notes and Tips

Verify the HVAC case layout and pipe routing before installation. Compare the original heater core dimensions to the listed core height, length, and width to confirm proper fitment in the vehicle. Because heater core replacement often requires access to the HVAC housing, inspect related hoses, seals, and coolant condition during service. Confirm compatibility with 2007, 2008, and 2009 Hyundai Santa Fe models before ordering Nissens 77657.

Quality Assurance

Nissens develops thermal management components for aftermarket use with a focus on consistent manufacturing standards and application-specific fitment. Part number 77657 reflects that approach with aluminum construction and brazed cooling fins for HVAC service.