Four Seasons 54658 A/C Evaporator Core

Four Seasons 54658 Evaporator Core Overview

Four Seasons 54658 is an aluminum A/C evaporator core built for HVAC service in select Honda applications. It is a serpentine-style evaporator core with OE-style inlet and outlet fitting configurations, making it a direct replacement option for 1988-1991 Honda Civic and 1988-1991 Honda CRX models with the listed core application.

The Four Seasons Evaporator Core line focuses on replacement HVAC components for air conditioning repair. Part number 54658 follows the specified core dimensions and fitting layout needed for proper system integration in the vehicle’s evaporator case and refrigerant circuit.

Key Features

• Aluminum evaporator core construction
• Serpentine core design
• Core width: 8-7/8 in. (225.425 mm)
• Core height: 6-7/8 in. (174.648 mm)
• Core depth: 3-15/16 in. (100.013 mm)
• Inlet fitting: No. 8 female O-ring
• Outlet fitting: No. 10 male insert O-ring
• OE-style replacement for select Honda Civic and Honda CRX HVAC systems

Detailed Description

Four Seasons 54658 evaporator core is engineered to match the listed dimensions and connection style required for specific Honda HVAC applications. The aluminum serpentine core supports refrigerant heat exchange inside the air conditioning system, helping restore cabin cooling performance when the original evaporator is leaking, restricted, or no longer functioning correctly. This part cross-references UAC EV4005AC for the same application.

Compatible With 1988-1991 Honda Civic, N/A. Compatible With 1988-1991 Honda CRX, N/A, w/ Modine Core. Search terms such as Honda Civic A/C evaporator core replacement, Honda CRX evaporator core with Modine core, and Four Seasons 54658 HVAC part number can help identify the correct service part for these vehicles.

What This Part Helps Address

• Refrigerant leaks from a damaged evaporator core
• Weak or inconsistent cabin cooling
• Restricted airflow through a deteriorated HVAC core
• Corrosion-related failure in the original aluminum core
• Loss of A/C performance in select Honda Civic and CRX models

Installation Notes and Tips

Verify the core dimensions, inlet and outlet fitting types, and vehicle application before installation. For 1988-1991 Honda CRX models, confirm the vehicle uses the Modine core configuration listed in the fitment data. Inspect the HVAC case, seals, and refrigerant lines during service so the replacement evaporator core can be installed with the correct fit and sealing surfaces.

Quality Assurance

Four Seasons supplies HVAC replacement components for automotive air conditioning service, and part number 54658 is built to the specified core dimensions and fitting layout for the listed applications. Confirm all fitment details against the vehicle before ordering.