Four Seasons 92254 HVAC Heater Core - Rear

Overview of Four Seasons Heater Core 92254 for Toyota Sienna

The Four Seasons Heater Core 92254 is designed specifically for Toyota Sienna models, providing reliable heating performance. This aluminum heater core meets or exceeds OEM standards to ensure proper fit and function within your vehicle's HVAC system.

• Core dimensions: 5-1/2 inches length, 7-3/4 inches width, 3/4 inch thickness
• Constructed from durable aluminum for efficient heat transfer
• Tube diameter: 0.6875 inches (17.46 mm) for both inlet and outlet
• Non-adjustable pipe positioning for direct replacement
• Compatible with Toyota Sienna HVAC systems

Detailed Product Description

The Four Seasons Heater Core 92254 is part of the Heater Core product line, engineered to provide consistent cabin heating by efficiently transferring engine coolant heat through its aluminum core. Measuring 5.5 inches in height, 7.75 inches in width, and 0.75 inches in depth, this heater core is designed to fit precisely within the HVAC housing of Toyota Sienna vehicles. The aluminum construction offers corrosion resistance and effective thermal conductivity, ensuring optimal heating performance. Both inlet and outlet tubes have a diameter of 0.6875 inches (17.46 mm), matching OEM specifications for seamless integration.

Common Applications and Issues Resolved

• Restores proper cabin heating in Toyota Sienna models
• Replaces leaking or clogged heater cores causing coolant loss
• Eliminates fogging or poor defrost performance due to heater core failure
• Addresses overheating issues related to heater core blockages
• Improves HVAC system efficiency and passenger comfort

Installation Notes and Tips

Installation of the Four Seasons Heater Core 92254 requires removal of the dashboard and HVAC housing in the Toyota Sienna. Ensure coolant system is properly drained before removal to prevent spills. Since pipe positioning is fixed, verify compatibility with your vehicle’s existing connections. It is recommended to inspect and replace any worn hoses or clamps during installation to maintain system integrity.

Quality Assurance and Warranty

This heater core meets or exceeds OEM specifications, ensuring reliable performance and fitment for Toyota Sienna vehicles. Manufactured with high-quality aluminum, it offers durability and resistance to corrosion. Four Seasons provides a limited warranty on this part, covering defects in materials and workmanship under normal use.