AISIN Engine Coolant Thermostat P/N:THZ-002
Help your engine reach and hold its intended operating temperature with the AISIN Thermostat THZ-008, an OE-engineered unit that starts to open at 88.0°C (190.4°F). It fits many vehicles, among them the 2017-2023 Mazda CX-5, 2016-2023 Mazda CX-9 and 2021-2025 Mazda 3, all with the L4-2.5L engine. Its listed applications cover L4-2.0L and L4-2.5L engines; see the "Vehicles it fits" section for the full list.
This engine coolant thermostat stays closed while the engine warms up, then opens to let coolant flow to the radiator. AISIN describes its OE engineered and manufactured thermostat assemblies as exact replacements with the exact temperature rating.
Sold individually. The listed applications use one thermostat. Country of origin: Japan.
Interchange: 143-0960 · P502-15-171
TX36588 · 1430960 · P50215171
This part cross-references / interchanges with the following part numbers:
Will this work as a 2021-2025 Mazda 3 2.5L coolant thermostat?
Yes. It is listed for the 2021-2025 Mazda 3 with the L4-2.5L engine, which uses one thermostat. Check the "Vehicles it fits" section for the other listed vehicles.
At what temperature does the AISIN THZ-008 start to open?
It starts to open at 88.0°C (190.4°F). As the coolant reaches that temperature, the thermostat begins opening to let coolant flow to the radiator.
Is a gasket included with this thermostat?
Yes, a gasket or seal is included. Follow your vehicle's service information for installation and for refilling and bleeding the cooling system.
What are signs a thermostat may need replacing?
Common signs include overheating, slow warm-up, an erratic temperature gauge or weak heater output. Other cooling system parts can cause these too, so diagnose the cause before replacing.
What is this thermostat made of and where is it made?
Its listed materials are brass and stainless steel, and its country of origin is Japan.
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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.