Four Seasons 92059 HVAC Heater Core - Front

Four Seasons 92059 Heater Core Overview

The Four Seasons Heater Core 92059 is an aluminum HVAC heater core built for direct replacement in select Ford Super Duty and Excursion applications. It is engineered to meet or exceed OEM requirements and is sized for the factory heater core location in compatible vehicles.

Compatible With 2003-2007 Ford F-250 Super Duty, 2003-2007 Ford F-350 Super Duty, and 2003-2005 Ford Excursion applications, this heater core supports dependable cabin heat performance when the original unit is leaking, restricted, or no longer transferring heat efficiently.

Key Features

• Brand: Four Seasons Heater Core
• Part number: 92059
• Aluminum core construction for efficient heat transfer
• Meets or exceeds OEM specifications
• Style: aluminum heater core
• Core dimensions: 7-1/8 in. length, 7-1/4 in. width, 1 7/8 in. thickness
• Tube size: 0.750 in. on both connections
• Fixed pipe positioning; adjustable pipe positioning: No

Product Details

Four Seasons 92059 is a replacement HVAC heater core designed around the factory dimensions and connection sizes used in select Ford trucks and SUVs. The aluminum core material helps support consistent coolant-to-air heat exchange, while the OE-style sizing helps simplify replacement in the heater case. This part cross-references Dorman - HELP 91059 for the same application.

Use this heater core when servicing the heating system on a Ford F-250 Super Duty, Ford F-350 Super Duty, or Ford Excursion and you need a direct-fit replacement that matches the original layout. The Four Seasons Heater Core line focuses on HVAC replacement components for common repair needs in passenger and light-duty truck heating systems.

Common Issues This Part May Resolve

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Heater core leakage into the HVAC housing
• Restricted coolant flow through the heater circuit
• Fogging caused by heater core seepage

Installation Notes and Tips

Verify the vehicle’s build date and heater core dimensions before installation, especially for 2003 Ford F-250 Super Duty and F-350 Super Duty models noted with aluminum design and production from 11/03. Confirm tube orientation and connection size against the original part before reassembly. Because heater core replacement often requires access through the HVAC case, inspect related hoses, clamps, and coolant condition during service.

Quality Assurance

This Four Seasons heater core is manufactured to meet or exceed OEM requirements for the listed applications. It is intended as a replacement HVAC component for Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Excursion heating system service.