Stant 14318 Engine Coolant Thermostat / Water Outlet Assembly

Integrated Thermostat Housing for Nissan and INFINITI

Stant Part Number 14318 is an engine coolant thermostat and water outlet assembly built with the thermostat integrated into the housing. That one-piece design helps simplify service on select Nissan 370Z, 350Z, Maxima, and INFINITI models while supporting the correct 180-degree operating temperature.

The Stant Integrated Thermostat Housing line focuses on direct-fit cooling system service parts that combine the thermostat and housing into a single assembly. For applications such as the INFINITI G37, Q50, and FX35, this approach reduces the need to source separate components and keeps the repair centered on the original cooling system layout.

Key Features

• Stant 14318 integrated thermostat housing for cooling system service
• 180-degree thermostat temperature rating
• Thermostat is built into the housing assembly for a simpler replacement process
• Durable housing material for long service life
• Bypass plate diameter: 1.2 in.
• Flange diameter without seal: 4.17 in.
• Height from flange to bottom: 1.13 in.

Detailed Description

This engine coolant thermostat / water outlet assembly is designed for vehicles that use an integrated thermostat housing layout. Stant Part Number 14318 provides the thermostat and housing in one service part, which helps streamline cooling system repairs and maintain the OE-style configuration on many Nissan and INFINITI applications. It is listed for 2019-2014 Nissan 370Z, 2018-2014 INFINITI Q50, 2018-2014 INFINITI Q70, 2018-2015 INFINITI Q70L, 2017-2014 INFINITI QX50, 2017-2015 INFINITI QX70, 2015 INFINITI Q40, 2015-2014 INFINITI Q60, 2014 INFINITI QX70, 2013 INFINITI EX37, 2013 INFINITI FX37, 2013-2012 INFINITI G37, 2013-2012 INFINITI M35h, 2013-2012 INFINITI M37, 2013-2011 Nissan 370Z, 2012 INFINITI EX35, 2012-2009 INFINITI FX35, 2012 INFINITI G25, 2011 INFINITI EX35, 2011 INFINITI G25, 2011 INFINITI G37, 2011 INFINITI M37, 2010-2008 INFINITI EX35, 2010-2009 INFINITI M35, 2010-2009 Nissan 370Z, 2009-2007 Nissan 350Z, 2008-2007 INFINITI G35, 2001-1996 INFINITI I30, 2001-2000 Nissan Maxima, and 1999-1995 Nissan Maxima.

Stant 14318 is a direct-fit cooling system service part for drivers searching for a 180 degree thermostat housing for Nissan 370Z, INFINITI G37 thermostat housing replacement, or a water outlet thermostat housing for Nissan Maxima and INFINITI Q50 applications.

Common Uses

• Replacing a leaking or cracked thermostat housing
• Restoring proper coolant flow control in the engine cooling system
• Addressing temperature regulation concerns tied to a worn thermostat
• Servicing an OE-style integrated thermostat housing setup
• Repairing a damaged water outlet assembly on select Nissan and INFINITI vehicles

Installation Notes and Tips

Confirm the vehicle’s original thermostat temperature and housing style before installation. This part is listed with a 180-degree temperature rating and an integrated housing design, so matching the OE configuration is important for proper fitment. Inspect the mating surfaces, coolant passages, and surrounding hoses during service, and refill the cooling system with the correct coolant after installation.

Quality Assurance

Stant is known for cooling system service components, and this integrated thermostat housing is built from durable material for long-lasting use. The one-piece thermostat-and-housing design supports a cleaner replacement process on the listed Nissan and INFINITI applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.