The 16031?31040 coolant thermostat assembly is a replacement component for selected Lexus RX350-RX450h AL20 2015-2022 2GR-FKS applications. It belongs to the Cooling System category.

OE Reference and Vehicle Compatibility

Main OE reference: 16031?31040. Listed fitment: Lexus RX350-RX450h AL20 2015-2022 2GR-FKS, engine 2GR-FKS. Fitment can vary by production date, engine and equipment configuration, so compare the original part number or confirm the VIN before replacement.

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