Aisin
Original Equipment Manufacturer

Aisin THH-014 Engine Coolant Thermostat

Brand Aisin THH-014
Product line Original Equipment Manufacturer
Fits Acura · 15 vehicles

OE direct replacement. Manufactured for exact form, fit, and function.

Engine coolant thermostat. Helps regulate coolant flow for consistent engine temperature.

Original equipment manufacturer. Built to match OE standards for dependable performance.

Cross-references Dorman - OE Solutions 951-172, 19315-5J2-A01 and 59517 for the same application. See all 8.

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Aisin THH-014 Engine Coolant Thermostat

The Aisin THH-014 engine coolant thermostat is an OE-manufactured replacement built for exact form, fit, and function. It is a direct-fit cooling system component for select Acura applications, including Acura MDX, Acura RLX, and Acura TLX models.

Aisin’s Original Equipment Manufacturer line focuses on factory-style replacement parts made to match the original design and operating requirements. For buyers searching for an OE thermostat for Acura MDX, Acura RLX, or Acura TLX cooling system service, THH-014 provides a straightforward replacement option.

Key Features

  • OE-manufactured engine coolant thermostat
  • Exact form, fit, and function replacement
  • 78°C thermostat specification on listed applications
  • Direct-fit cooling system service part for Acura MDX, Acura RLX, and Acura TLX
  • Part number THH-014 for easy identification

Detailed Description

The Aisin THH-014 is an engine coolant thermostat designed for factory-style replacement in select Acura vehicles. It is listed for 2015-2020 Acura TLX, 2016-2019 Acura MDX, and 2018-2020 Acura RLX applications, with 78°C OE temperature notes shown on several fitments. This part cross-references Dorman OE Solutions 951-172 for the same application.

Use THH-014 when servicing a cooling system that requires an OE-spec thermostat with the correct opening temperature and housing interface for the listed Acura platforms. The Aisin THH-014 part number is also referenced by interchange numbers including THH014 and 95175.

What It Helps Address

  • Engine temperature running too cool or too warm
  • Delayed coolant flow regulation after startup
  • Temperature fluctuation during normal driving
  • Cooling system service on Acura MDX, Acura RLX, and Acura TLX
  • Replacement of a worn or sticking thermostat

Installation Notes and Tips

Verify engine code, thermostat temperature specification, and vehicle year before installation. Confirm the housing style and OE reference against the removed part to ensure the Aisin THH-014 matches the original cooling system configuration. After installation, refill and bleed the cooling system according to factory service procedures.

Quality Assurance

Aisin is an Original Equipment Manufacturer, and this thermostat is described as OE manufactured for exact form, fit, and function. That OE-focused construction supports a factory-style replacement for Acura cooling system maintenance.

This part fits 15 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2020AcuraMDX3.5LV6N/A78°C; Original Equipment Manufacturer
2020AcuraRLX3.5LV6N/A78°C; Original Equipment Manufacturer
2020AcuraTLX3.5LV6N/A78°C; Original Equipment Manufacturer
2019AcuraMDX3.5LV6N/A—
2019AcuraRLX3.5LV6N/A—
2019AcuraTLX3.5LV6N/A—
2018AcuraMDX3.5LV6N/A—
2018AcuraRLX3.5LV6N/A—
2018AcuraTLX3.5LV6N/A—
2017AcuraMDX3.5LV6N/A78°C (172°F) OE Temp Thermostat
2017AcuraTLX3.5LV6N/A78°C (172°F) OE Temp Thermostat
2016AcuraMDX3.5LV6N/A78°C (172°F) OE Temp Thermostat
2016AcuraTLX3.5LV6N/A78°C (172°F) OE Temp Thermostat
2015AcuraTLX2.4LL4N/A—
2015AcuraTLX3.5LV6N/A78°C (172°F) OE Temp Thermostat
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - OE Solutions — 951-17219315-5J2-A0159517951759951172P95172THH014WH-HNJ-78