One Stop Solutions 98980 HVAC Heater Core

OE-Style Heater Core Replacement

Restore cabin heat performance with this One Stop Solutions HVAC heater core, part number 98980. It is built as a direct replacement for OE-style fit and function, with application coverage for the 2000-2005 Toyota Echo and 2004-2006 Scion xA and xB.

Designed for the Toyota Echo heater core and Scion xA/xB heater core applications, this unit uses premium aluminum construction and is individually pressure tested for leak resistance before release.

Key Features

• Drop-in fit, form, and function for the listed applications
• Premium grade aluminum construction for added durability
• Cadmium-plated tubes inside and out to help resist premature failure
• Cycle, vibration, burst, and environmental testing for durability validation
• Includes necessary foam and related accessories for installation
• Built to address common OE design weaknesses in higher-mileage vehicles

Detailed Product Overview

One Stop Solutions 98980 is an HVAC heater core engineered as a direct replacement for vehicles originally equipped with a copper-style core. The aluminum design is intended to match original equipment form and function while improving resistance to corrosion-related wear. Each unit is pressure tested individually, and the construction is validated through cycle, vibration, burst, and environmental testing to support consistent performance in daily driving conditions.

This heater core is a practical choice for owners searching for a 2000-2005 Toyota Echo heater core or a 2004-2006 Scion xA heater core and Scion xB heater core replacement. Part number 98980 also cross-references National 99274 for the same application.

Common Issues This Part May Resolve

• Weak or inconsistent cabin heat output
• Coolant seepage from a leaking heater core
• Fogging or sweet odor caused by heater core leakage
• Reduced heating performance in high-mileage vehicles
• Failure related to corrosion, vibration, or thermal cycling

Installation Notes and Tips

Verify the vehicle year, make, and model before ordering. This heater core is a direct replacement for the listed applications, and the included foam and accessories should be transferred or positioned as required during installation. Because heater core replacement often requires access behind the instrument panel, inspect hoses, clamps, and coolant condition at the same time to reduce repeat labor.

Quality Assurance

Each One Stop Solutions heater core is individually pressure tested and manufactured using premium aluminum with cadmium-plated tubes for added resistance to premature failure. The part is also subjected to cycle, vibration, burst, and environmental testing to support dependable operation in the listed Toyota Echo, Scion xA, and Scion xB applications.