Four Seasons 92172 HVAC Heater Core

Four Seasons 92172 Heater Core for Toyota and Lexus

The Four Seasons 92172 heater core is an aluminum HVAC replacement built for select Toyota and Lexus applications. It is a direct-fit heater core for 2003-2009 Toyota 4Runner, 2003-2009 Lexus GX470, and 2007-2014 Toyota FJ Cruiser heater core service.

Key Features

• Aluminum heater core construction for HVAC heat transfer
• Meets or exceeds OEM requirements
• Core dimensions: 4-7/8 in. height, 11 in. width, 1 in. depth
• Tube size: 0.6875 in. on both connections
• Four Seasons heater core part number 92172
• Cross-references Dorman - HELP 91172 for the same application

Product Details

Four Seasons Heater Core 92172 is part of the brand’s heater core line and is built as an aluminum heater core replacement for HVAC repair work. The core material, dimensions, and tube sizing are specified for fitment in select Toyota 4Runner, Lexus GX470, and Toyota FJ Cruiser models, making it a practical choice when restoring cabin heat performance. This part number 92172 is also listed with interchange references including Dorman - HELP 91172.

Common Problems This Part Can Address

• Loss of cabin heat
• Coolant odor inside the vehicle
• Heater core leakage
• Poor defrost performance caused by reduced heater output
• Temperature inconsistency from a restricted or damaged heater core

Installation Notes

Fits 2007-2014 Toyota FJ Cruiser, N/A. Fits 2003-2009 Lexus GX470, N/A. Fits 2003-2009 Toyota 4Runner, N/A. Verify tube orientation, core dimensions, and HVAC case configuration before installation. Because heater core replacement often requires access to the HVAC housing, confirm all coolant lines and sealing surfaces are clean before reassembly.

Quality Assurance

This Four Seasons heater core meets or exceeds OEM specifications for the listed applications. The aluminum construction and application-specific sizing support a factory-style replacement for Toyota 4Runner, Lexus GX470, and Toyota FJ Cruiser heater core service.