Four Seasons 92363 HVAC Heater Core

Four Seasons 92363 Heater Core

Four Seasons 92363 is a specific-fit aluminum heater core for select 2012-2013 Mazda 3 and Mazda 3 Sport models with Skyactiv Technology. Built to meet or exceed OEM requirements, it is sized for direct replacement in the HVAC system and supports consistent cabin heat performance.

Key Features

• Specific-fit HVAC heater core for confirmed Mazda applications
• Aluminum core construction for efficient heat transfer
• Core dimensions: 7-5/8 in. height, 6-3/4 in. width, 1-1/4 in. depth
• Tube size: 0.625 in. / 15.875 mm on both connections
• Meets or exceeds OEM specifications
• Four Seasons heater core part number 92363

Product Details

This Four Seasons Heater Core is engineered as an aluminum heater core for HVAC service on 2012-2013 Mazda 3 and Mazda 3 Sport vehicles equipped with Skyactiv Technology. The compact core dimensions and specific-fit design support proper placement in the heater case, while the aluminum construction helps transfer heat efficiently through the vehicle’s climate control system. Four Seasons 92363 is a direct replacement option for drivers addressing heater core service on these Mazda applications.

This part cross-references Dorman - HELP 99378 for the same application.

Common Issues It Can Address

• Weak or inconsistent cabin heat
• Restricted coolant flow through the heater core
• Internal heater core leakage
• Reduced HVAC heating performance in cold weather
• Replacement needs during heater core service on Mazda 3 and Mazda 3 Sport models

Installation Notes and Tips

Verify vehicle build date and engine configuration before ordering, since fitment is limited to 2012-2013 Mazda 3 and Mazda 3 Sport models with Skyactiv Technology, including 2013 vehicles built to 12/12. Confirm the heater hose connection sizes and compare the core dimensions to the original unit before installation. Proper cooling system draining, flushing, and refill procedures should be followed during heater core replacement.

Quality Assurance

Four Seasons 92363 is listed as meeting or exceeding OEM specifications for the confirmed application. The aluminum heater core construction and specific-fit design support accurate replacement in the HVAC system.