Four Seasons 54689 A/C Evaporator Core

Four Seasons 54689 A/C Evaporator Core

The Four Seasons 54689 evaporator core is an aluminum serpentine HVAC component built for the air conditioning system in select Honda Accord applications. It is specified with a 9.000-inch core width, 12.000-inch core height, and 3-3/8-inch core depth for a direct-fit replacement in the evaporator case.

For Honda Accord owners searching for an A/C evaporator core, Four Seasons 54689 provides the core dimensions and fitting style needed for the 1990-1993 Honda Accord, including 1991-1993 models with threaded fittings. This part cross-references UAC EV4007AC for the same application.

Key Features

• Aluminum serpentine evaporator core construction
• Core dimensions: 9.000 in. width, 12.000 in. height, 3-3/8 in. depth
• Inlet fitting: No. 8 female O-ring
• Outlet fitting: No. 10 male insert O-ring
• Includes Green O-Ring references for sealing points
• Four Seasons 54689 part number for HVAC service and replacement

Product Details

This evaporator core is the heat-exchange component inside the vehicle’s A/C system that absorbs cabin heat as refrigerant passes through the core. The serpentine aluminum design supports efficient refrigerant flow through the evaporator assembly, while the listed inlet and outlet fitting types help match the original HVAC connection style. Four Seasons 54689 is listed for 1990 Honda Accord and 1991-1993 Honda Accord, with notes indicating threaded fittings on the later applications.

Common Problems This Part Can Address

• Loss of cooling performance from a leaking or restricted evaporator core
• Refrigerant odor or residue from a damaged HVAC core
• Uneven cabin air temperature caused by internal blockage
• Moisture-related corrosion affecting evaporator operation
• Service replacement after A/C system disassembly or contamination

Installation Notes and Tips

Verify the core width, height, depth, and fitting orientation before installation. Confirm the inlet and outlet fitting sizes match the vehicle’s HVAC lines, and replace sealing O-rings during service to help maintain a proper refrigerant seal. For 1991-1993 Honda Accord applications, confirm the threaded fitting configuration noted in the fitment data before assembly.

Quality Assurance

Four Seasons is a recognized HVAC parts brand with cataloged OE-style replacement coverage. Part number 54689 is listed with defined dimensional and fitting specifications to support accurate selection for Honda Accord A/C service.

Vehicle Fitment

• Fits 1990 Honda Accord, N/A
• Fits 1991-1993 Honda Accord, N/A, w/ Threaded Fittings; Evaporator Core