Help restore cabin heat with the Agility Auto Parts HVAC Heater Core 9010543 — a direct-fit 2003-2009 Toyota 4Runner heater core replacement that also drops into the 2003-2009 Lexus GX470 and the 2007-2014 Toyota FJ Cruiser. A heater core routes hot engine coolant through its core so the blower can push warmed air into the passenger compartment; signs it may need replacing include weak or no heat, a sweet coolant smell, fogged windows, or coolant seepage on the floor.
Made in China. Sold individually; one unit is used per listed application.
Interchange: 18-12341
1812341 · 99078 · 92172 · 98028 · 8710735100 · 399991
This part cross-references / interchanges with the following part numbers:
What vehicles does this heater core fit?
It fits the 2003-2009 Lexus GX470, the 2003-2009 Toyota 4Runner, and the 2007-2014 Toyota FJ Cruiser. See the Buyer's Guide tab to confirm your vehicle.
Will this work as a 2003-2009 Lexus GX470 heater core?
Yes. The 9010543 is a direct-fit replacement for the 2003-2009 Lexus GX470, fitment-checked in the vehicle's HVAC heater module for a drop-in fit.
What is this heater core made of?
It uses aluminum construction, with an aluminum core and tanks for thermal performance and corrosion resistance.
What are the core dimensions?
The core measures 10.750 in wide by 4.875 in high by 1.000 in deep, with 0.6875 in inlet and outlet pipe diameters.
How do I know if my heater core is failing?
Common signs include weak or no cabin heat, fogged windows, a sweet coolant odor, or coolant seepage on the floor. Diagnose the cause before replacing, as other parts can produce similar symptoms.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
