Warm your interior with the Agility Auto Parts HVAC Heater Core (MPN 9010378) — a Lexus LS400 heater core that installs as a direct-fit replacement for the 1995-2000 Lexus LS400 [All]. Engine coolant flows through the core's tubes while the blower pushes cabin air across its fins to heat the interior; weak heat, a sweet coolant smell, interior fogging, or coolant seepage on the floor can be signs the original core may need replacing.
- Aluminum construction: aluminum core, tubes, and tanks for thermal performance and resistance to corrosion.
- Fin-and-tube design: uses current fin and tube technology for increased thermal performance.
- Tested and fitment-checked: 100% leak tested and fitment checked in the actual vehicle's HVAC heater module for a drop-in fit right out of the box.
- OE-level build: certified to meet or exceed OE specifications and engineered under ISO TS16949 quality systems.
The core measures 10.25 in tall by 5.75 in wide by 1.00 in deep, with 0.625 in inlet and outlet pipe diameters. Country of origin: China.
Interchange: 18-12440
1812440 · 98036 · 90036 · 399291 · 93036 · 8710750030
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Does this heater core fit my Lexus LS400?
Yes — it is a direct-fit replacement for the 1995-2000 Lexus LS400 [All]. Check the Buyer's Guide tab to confirm your specific vehicle.
What is this heater core made of?
The core, tubes, and tanks are aluminum, using fin and tube technology for thermal performance and resistance to corrosion.
What are the core dimensions?
The core measures 10.25 in tall by 5.75 in wide by 1.00 in deep, with 0.625 in inlet and outlet pipe diameters.
Is this heater core tested before shipping?
Yes. Every heater is 100% leak tested and fitment checked in the vehicle's HVAC heater module, and is built under ISO TS16949 quality systems.
What does a heater core do?
It routes engine coolant through its tubes and fins so the blower can pass cabin air over it to warm the interior. No heat, fogging, or coolant leaks can be signs it needs replacing.
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