Gates 33912 Engine Coolant Thermostat - Passenger Side

Integrated Thermostat Housing for OE Temperature Control

Gates 33912 is an integrated housing thermostat built for precise coolant temperature regulation in Nissan and INFINITI applications. With an OE performance rating and a 180-degree start-to-open temperature, it supports stable engine operating temperature for vehicles such as the Nissan 370Z, Nissan 350Z, INFINITI G37, and INFINITI Q50.

The Gates Integrated Housing Thermostat line focuses on aftermarket solutions for vehicles that use a thermostat and housing assembly together. Gates applies its cooling-system development experience to deliver a direct-fit replacement that matches the integrated design used on many late-model Nissan and INFINITI engines.

Key Features

• Part number 33912
• Integrated housing thermostat design
• 180°F / 82°C start-to-open temperature
• OE performance rating
• 2 bolt holes for mounting
• Jiggle pin weep hole and jiggle pin/check valve: yes
• 1 seal listed
• Electric: no
• Outlet inside diameter: 1.29 in
• Outlet outside diameter: 1.445 in

Detailed Description

Gates 33912 is an engine coolant thermostat assembly engineered for vehicles that use an integrated thermostat housing. Its 180-degree opening point helps maintain the factory-style operating range, while the integrated design simplifies replacement on applications where the thermostat and housing are serviced together. This part number is a strong match for long-tail searches such as Nissan 370Z 180 degree integrated housing thermostat, INFINITI G37 thermostat housing replacement, and INFINITI Q50 engine coolant thermostat.

This part cross-references Dorman - OE Solutions 902-5140 and Stant 14318 for the same application. It also aligns with common interchange references including Four Seasons 33912.

What It Helps Address

• Engine running hotter than normal
• Slow warm-up or unstable coolant temperature
• Thermostat housing wear or leakage at the assembly
• Cooling-system service on integrated housing designs
• OE-style replacement needs for Nissan and INFINITI models

Installation Notes and Tips

Verify the outlet dimensions, bolt-hole count, and temperature rating before installation. Clean the mating surfaces thoroughly and inspect the sealing surface and coolant passages for corrosion or debris. This thermostat assembly is listed for multiple Nissan and INFINITI platforms, including 2009-2017 Nissan 370Z, 2007-2009 Nissan 350Z, 2014-2015 INFINITI Q50, and 2012-2013 INFINITI G37, so confirm the exact year and engine configuration against the vehicle catalog before service.

Fits 2018-2020 Nissan 370Z, N/A; Fits 2009-2017 Nissan 370Z, N/A; Fits 2007-2009 Nissan 350Z, N/A; Fits 2018-2019 INFINITI Q70, N/A; Fits 2018-2019 INFINITI Q70L, N/A; Fits 2016-2018 INFINITI Q50, N/A; Fits 2014-2017 INFINITI Q70, N/A; Fits 2015-2017 INFINITI Q70L, N/A; Fits 2014-2017 INFINITI QX50, N/A; Fits 2015-2017 INFINITI QX70, N/A; Fits 2015 INFINITI Q40, N/A; Fits 2014-2015 INFINITI Q50, N/A; Fits 2014-2015 INFINITI Q60, N/A; Fits 2014 INFINITI QX70, N/A; Fits 2013 INFINITI EX37, N/A; Fits 2013 INFINITI FX37, N/A; Fits 2012-2013 INFINITI G37, N/A; Fits 2008-2010 INFINITI G37, N/A; Fits 2013 INFINITI JX35, N/A; Fits 2012-2013 INFINITI M35h, N/A; Fits 2012-2013 INFINITI M37, N/A; Fits 2012 INFINITI EX35, N/A; Fits 2012 INFINITI FX35, N/A; Fits 2009-2010 INFINITI FX35, N/A; Fits 2012 INFINITI G25, N/A; Fits 2011 INFINITI EX35, N/A; Fits 2011 INFINITI FX35, N/A; Fits 2011 INFINITI G25, N/A; Fits 2011 INFINITI G37, N/A; Fits 2011 INFINITI M37, N/A; Fits 2008-2010 INFINITI EX35, N/A; Fits 2009-2010 INFINITI M35, N/A; Fits 2008-2008 INFINITI G35, N/A; Fits 2007-2007 INFINITI G35, N/A; Fits 1996-2001 INFINITI I30, N/A; Fits 2000-2001 Nissan Maxima, Passenger Side; Fits 1995-1999 Nissan Maxima, N/A.

Quality Assurance

Gates positions this Integrated Housing Thermostat line as an OE-performance aftermarket solution for modern cooling-system designs. The brand’s research and development focus on integrated thermostat housings supports accurate temperature regulation for the listed Nissan and INFINITI applications.