Keep coolant flowing at the right temperature with the AISIN Engine Coolant Thermostat & Housing Assembly THH-014. It drops in as a direct-fit replacement for the 2015-2020 Acura TLX (L4-2.4L and V6-3.5L), 2016-2020 Acura MDX (V6-3.5L) and 2018-2020 Acura RLX (V6-3.5L), combining the thermostat and its housing in one serviceable unit. The thermostat regulates coolant flow between the engine and radiator, opening as the engine warms to help hold the cooling system in its intended operating range.
If a stuck-open thermostat is causing slow warm-up or a stuck-closed unit is a cause of overheating, this assembly replaces the original. Diagnose the cause before replacing.
Interchange: 19315-5J2-A01 · 951-172 · WH-HNJ-78
193155J2A01 · 951172 · WHHNJ78 · 95175 · 59517 · P95172 · 9951172
This part cross-references / interchanges with the following part numbers:
What vehicles does the THH-014 fit?
It fits the 2015-2020 Acura TLX (L4-2.4L and V6-3.5L), 2016-2020 Acura MDX (V6-3.5L) and 2018-2020 Acura RLX (V6-3.5L). Check the Buyer's Guide tab to confirm your engine.
What does this thermostat assembly do?
It regulates coolant flow between the engine and radiator, opening as the engine warms up to help keep the cooling system within its intended operating temperature range.
Does it include the housing?
Yes. This is a combined thermostat and housing assembly, supplied together as one unit for a straightforward replacement.
What are signs this part may need replacing?
A thermostat stuck closed can contribute to overheating, while one stuck open can cause slow warm-up or a low temperature reading. Diagnose the cause before replacing.
Where is this part made?
The 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.
