Four Seasons 54782 A/C Evaporator Core

Four Seasons 54782 Evaporator Core Overview

The Four Seasons 54782 evaporator core is an aluminum, plate-and-fin A/C evaporator core built for HVAC service in select Nissan applications. It is sized for the listed core dimensions and uses a female O-ring inlet with a male insert O-ring outlet for proper refrigerant line connection.

Compatible With 1998-2004 Nissan Frontier and 2000-2004 Nissan Xterra applications, this evaporator core supports direct replacement service where the original unit has leaked, restricted airflow, or lost cooling performance. The Four Seasons evaporator core line focuses on replacement parts for automotive air conditioning repair, and part number 54782 is listed with multiple interchange references for the same application.

Key Features

• Aluminum plate-and-fin evaporator core construction
• Core width: 9-1/4 in. (234.950 mm)
• Core height: 8-3/4 in. (222.250 mm)
• Core depth: 3-3/8 in. (85.725 mm)
• Inlet fitting: No. 8 female O-ring
• Outlet fitting: No. 10 male insert O-ring
• Includes O-ring service references: [24608] Green O-Ring and [24610] Green O-Ring

Detailed Description

Four Seasons 54782 is an A/C evaporator core designed around the listed dimensions and fitting styles for Nissan Frontier and Nissan Xterra HVAC repair. The aluminum plate-and-fin design is used in evaporator service where refrigerant flow and heat transfer through the cabin HVAC system are critical. Verify the core width, height, depth, and fitting orientation against the original unit before installation to confirm proper alignment with the vehicle’s air conditioning housing and lines.

This part cross-references Gates 6989 and TYC 97063 for the same application. Four Seasons 54782 is also referenced across multiple OE and aftermarket part numbers, making it a practical replacement choice when servicing a leaking or inefficient evaporator core in a Nissan Frontier or Nissan Xterra.

What This Part Helps Address

• Warm air from the vents caused by a leaking evaporator core
• Reduced cabin cooling performance in the A/C system
• Refrigerant loss from corrosion or internal damage
• Restricted HVAC operation caused by a failing core
• Odors or moisture issues related to evaporator deterioration

Installation Notes and Tips

• Fits 1998 Nissan Frontier, N/A.
• Fits 1999-2000 Nissan Frontier, N/A; evaporator core, may require internal equalized expansion valve.
• Fits 2001-2004 Nissan Frontier, N/A.
• Fits 2000-2004 Nissan Xterra, N/A.
• Confirm inlet and outlet fitting types, core dimensions, and O-ring match before reassembly.
• Inspect the expansion valve, seals, and refrigerant lines during evaporator replacement.

Quality Assurance

Four Seasons supplies HVAC replacement components for automotive air conditioning service, and this evaporator core is cataloged with defined dimensions, material, and fitting specifications to support accurate part selection for Nissan Frontier and Nissan Xterra repairs.