AISIN Engine Coolant Thermostat P/N:THN-012
Hold your engine at its designed operating temperature with the AISIN Engine Coolant Thermostat & Housing Assembly (THN006). This thermostat regulates coolant flow between the engine and radiator, opening at its calibrated temperature to keep the engine within its optimal range. It's a direct-fit replacement for a long list of INFINITI and NISSAN applications, including the 2009-2020 NISSAN 370Z [V6-3.7L], 2014-2018 INFINITI Q50 [V6-3.5L], 2014-2018 INFINITI Q70 [V6-3.7L] and 1995-2001 NISSAN MAXIMA [V6-3.0L] — see the Buyer's Guide tab for the full list of 22 applications.
When a thermostat sticks open the engine may run cold and warm up slowly; when it sticks closed the engine may overheat. If a failed thermostat is the cause of these signs, this assembly replaces it. Country of origin: Japan.
Interchange: 143-0788 · 21200-31U00 · 21200-31U01 · 21200-31U02 · 21200-31U03 · 343-170 · WH31U-82TAA
1430788 · 2120031U00 · 2120031U01 · 2120031U02 · 2120031U03 · 343170 · WH31U82TAA · 33737 · 13947
This part cross-references / interchanges with the following part numbers:
What does this thermostat do?
It regulates coolant flow between the engine and radiator, opening at its calibrated temperature to keep the engine within its optimal operating range.
Does this part include the housing?
Yes. It is supplied as a complete engine coolant thermostat and housing assembly.
Which vehicles does the THN006 fit?
It fits 22 INFINITI and NISSAN applications, including the 2009-2020 NISSAN 370Z, 2014-2018 INFINITI Q50 and 1995-2001 NISSAN MAXIMA. See the Buyer's Guide tab for the full list.
What are signs the thermostat may need replacing?
A thermostat stuck open can cause slow warm-up and the engine running cold, while one stuck closed can cause overheating. Diagnose the cause before replacing.
Where is this thermostat made?
Its country of origin is Japan.
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.