Nissens 707198 HVAC Heater Core

Nissens 707198 HVAC Heater Core

The Nissens 707198 HVAC heater core is an aluminum replacement component built for efficient cabin heat transfer and reliable thermal performance. It is compatible with select Toyota Yaris applications and uses brazed cooling fins for consistent airflow through the core.

Key Features

• Aluminum core material for effective heat exchange
• Aluminum tank construction for corrosion-resistant thermal system service
• Brazed cooling fins for stable fin-to-tube construction
• Pipe included for application-specific installation needs
• Direct-fit heater core for select Toyota Yaris models

Product Details

This HVAC heater core is engineered for 2015-2018 Toyota Yaris and 2014 Toyota Yaris, excluding Japan-built 2014 vehicles. The Nissens 707198 is built with an aluminum core and aluminum tanks to support efficient coolant-to-air heat transfer inside the heater box. Its brazed cooling fin construction helps maintain a compact, durable design suited to modern HVAC systems. This part number, 707198, is a practical replacement choice when servicing the heater circuit on Toyota Yaris models that need restored cabin heat output.

This part cross-references UAC HT2107C and Global Parts Distributors LLC 1811998 for the same application.

Common Issues This Part Can Address

• Weak or uneven cabin heat in Toyota Yaris models
• Coolant seepage from a worn heater core assembly
• Restricted heat transfer caused by internal blockage or corrosion
• HVAC performance loss after heater core deterioration
• Need for a replacement heater core during cooling system repair

Installation Notes and Tips

Verify vehicle fitment by year and build origin before ordering, especially for the 2014 Toyota Yaris, which excludes Japan-built vehicles. Confirm hose routing, pipe alignment, and HVAC case access against the original unit before installation. Because heater core replacement often requires dashboard or HVAC housing disassembly, inspect related coolant hoses, clamps, and the cooling system for contamination or leaks during service.

Quality Assurance

Nissens develops and manufactures thermal management components to consistent quality standards across its aftermarket range. The 707198 heater core reflects that manufacturing approach with aluminum construction and brazed fin design for dependable service in the specified Toyota Yaris applications.