Four Seasons 54574 A/C Evaporator Core

Four Seasons 54574 Evaporator Core Overview

The Four Seasons 54574 evaporator core is an aluminum, plate-and-fin A/C evaporator core built for HVAC service on select Mazda applications. It is sized with a core width of 9-1/4 inches, core height of 9 inches, and core depth of 3-9/16 inches to match the listed vehicle fitment.

Compatible With 1988-1992 Mazda 626 and 1988-1992 Mazda MX-6 applications, this evaporator core supports cabin cooling performance when the original unit is leaking, restricted, or no longer transferring heat effectively. Four Seasons Evaporator Core 54574 is a direct-fit replacement for the specified vehicles.

Key Features

• Brand: Four Seasons Evaporator Core
• Part number: 54574
• Aluminum plate-and-fin construction
• Core width: 9-1/4 in. (234.950 mm)
• Core height: 9 in. (228.600 mm)
• Core depth: 3-9/16 in. (90.487 mm)
• Inlet fitting: No. 8 female O-ring
• Outlet fitting: No. 10 male insert O-ring
• O-ring specification: Green O-ring, [24610]

Product Details

Four Seasons 54574 is part of the Evaporator Core line and is engineered around the listed dimensions and fitting style for service replacement in Mazda HVAC systems. The plate-and-fin aluminum design is commonly used in automotive air conditioning evaporators because it provides the required heat exchange surface in a compact core package. If you are replacing a leaking or clogged A/C evaporator core on a Mazda 626 or Mazda MX-6, this unit matches the published size and connection details for the application.

This part cross-references UAC EV4870PFXC and AMS Automotive 6888 for the same application.

Common Problems This Part Can Address

• A/C system loss caused by an evaporator core leak
• Reduced cabin cooling from restricted refrigerant flow through the core
• Weak air discharge temperature from a damaged heat exchanger
• HVAC performance issues tied to corroded or deteriorated evaporator passages
• Replacement needs after contamination inside the evaporator housing

Installation Notes and Tips

Verify the inlet and outlet fitting styles before installation: No. 8 female O-ring inlet and No. 10 male insert O-ring outlet. Confirm the core dimensions against the original evaporator and inspect the HVAC housing, seals, and O-ring sealing surfaces during service. Proper evacuation, leak checking, and refrigerant recharge are required after A/C component replacement.

Fits 1988-1992 Mazda 626, N/A. Fits 1988-1989 Mazda MX-6, N/A. Fits 1991-1992 Mazda MX-6, N/A.

Quality Assurance

Four Seasons supplies HVAC replacement components with application-specific dimensions and fitting details for service accuracy. This evaporator core is built to the published specifications for the listed Mazda vehicles.