Four Seasons 92117 HVAC Heater Core

Four Seasons 92117 Heater Core

Four Seasons 92117 is an aluminum HVAC heater core built for direct replacement in select Lexus RX applications. It is engineered to meet or exceed OEM requirements and uses the listed core dimensions for a precise service fit in the heater box.

Key Features

• Aluminum heater core construction
• Core dimensions: 8-7/8 in. height, 6 in. width, 1-1/4 in. thickness
• Tube size: 0.625 in. / 15.875 mm on both connections
• Meets or exceeds OEM specifications
• Four Seasons Heater Core line for HVAC service replacement

Product Details

This Four Seasons heater core, part number 92117, is a direct-fit HVAC component for the heater system. The aluminum core material supports efficient heat transfer, while the listed height, width, thickness, and tube dimensions help match the original heater core layout. Compatible vehicle coverage includes 2004-2006 Lexus RX330, 2006-2008 Lexus RX400h, and 2007-2009 Lexus RX350. This part cross-references Dorman - HELP 91117 for the same application.

What It Helps Fix

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Heater core leakage
• Restricted heat output from a clogged core
• HVAC performance loss in Lexus RX330, RX400h, and RX350 models

Installation Notes

Verify heater core dimensions, tube diameter, and vehicle application before installation. This part does not use adjustable pipe positioning, so alignment should be checked against the original unit during service. Confirm the HVAC system is fully drained and flushed as needed before replacing the core, and inspect hoses, seals, and related components for wear.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM requirements for the specified applications. It is intended for service replacement in Lexus RX330, RX400h, and RX350 models where the original heater core matches the listed specifications.