Four Seasons 54733 A/C Evaporator Core - Front

Four Seasons 54733 A/C Evaporator Core

Four Seasons 54733 is an aluminum A/C evaporator core for the front HVAC system in select Toyota Sienna models. It is built as a serpentine-style evaporator core with female O-ring inlet and outlet fittings for a direct replacement in the air conditioning system.

Compatible with 2001-2003 Toyota Sienna, front, this evaporator core supports proper refrigerant flow through the HVAC case and helps restore cabin cooling performance. The Four Seasons Evaporator Core line focuses on replacement cores that match application-specific dimensions and fitting styles.

Key Features

• Brand: Four Seasons
• Part number: 54733
• Aluminum evaporator core construction
• Serpentine core design
• Female O-ring inlet fitting, No. 8 outside diameter
• Female O-ring outlet fitting, No. 10 outside diameter
• Core width: 10-7/8 in. | core height: 8-7/16 in. | core depth: 3-1/2 in.
• Direct fit for front HVAC applications on select Toyota Sienna models

Product Details

Four Seasons 54733 is an A/C evaporator core designed around the listed dimensions and fitting configuration for front HVAC service. The aluminum serpentine core measures 10.875 inches wide, 8.4375 inches high, and 3.500 inches deep, with female O-ring connections sized No. 8 on the inlet and No. 10 on the outlet. This makes it a practical replacement when servicing the evaporator section of the air conditioning system on 2001-2003 Toyota Sienna vehicles.

This part cross-references UAC EV939584PFC and Spectra Premium 1054733 for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Refrigerant leakage at the evaporator core connections
• Restricted airflow through a damaged or corroded core
• HVAC performance loss caused by an internally compromised evaporator
• Service replacement for a front A/C evaporator in Toyota Sienna models

Installation Notes and Tips

Verify the core dimensions, inlet and outlet fitting sizes, and front HVAC placement before installation. Inspect the O-ring sealing surfaces and replace worn seals during service to help maintain a proper refrigerant seal. Because evaporator replacement requires access to the HVAC case, confirm system evacuation and recharge procedures are followed according to vehicle service specifications.

Quality Assurance

Four Seasons supplies replacement HVAC components for automotive air conditioning service, and this evaporator core is built to match the listed application details for fitment-focused repair work.