Four Seasons 85201 Engine Coolant Thermostat / Water Outlet Assembly

Engine Coolant Thermostat / Water Outlet Assembly

Four Seasons 85201 is an aluminum engine coolant thermostat and water outlet assembly built for direct replacement service on select Nissan and INFINITI applications. It combines the outlet housing with the thermostat in one service part for a clean, OE-style repair on vehicles such as the Nissan 370Z and INFINITI G37.

The Four Seasons Water Outlet line focuses on cooling-system components that match factory-style fitment and function. This part number 85201 is a water outlet assembly with thermostat included, making it a practical choice when servicing the coolant outlet on a wide range of VQ- and VQ35/VQ37-equipped vehicles.

Key Features

• Aluminum construction for cooling-system durability
• Engine coolant thermostat / water outlet assembly
• Thermostat included
• Meets or exceeds OEM requirements
• Inside diameter: 1.220 in.
• Inlet diameter: 1.37 in.
• Maximum height: 4.26 in.
• Mounting hole quantity: 3
• Bolt hole center to bolt hole center: 3.57 in.
• Mounting flange width: 0.68 in.
• Gasket or seal not included

Detailed Description

Four Seasons 85201 is an engine coolant components part designed as a water outlet with thermostat for direct-fit cooling system service. It is listed for applications including 2009-2020 Nissan 370Z, 2009-2013 INFINITI G37, 2014-2020 INFINITI Q50, and other select INFINITI and Nissan models. If you are searching for a Nissan 370Z water outlet assembly or an INFINITI G37 thermostat housing replacement, this part number 85201 is built to match the required outlet configuration.

This aluminum outlet assembly is intended for vehicles that need a thermostat-integrated coolant outlet replacement. Cross-reference part numbers include Stant 14318 and Four Seasons 33912 for the same application.

Common Repair Uses

• Replacing a leaking coolant outlet housing
• Restoring thermostat control in the engine cooling system
• Addressing coolant seepage at the outlet flange
• Repairing overheating caused by a worn thermostat assembly
• Servicing a cracked or corroded aluminum water outlet

Installation Notes and Tips

Confirm the vehicle’s engine and outlet style before installation, especially on INFINITI Q70L and Q40 applications that note housing and thermostat configuration. Inspect the mating surfaces carefully, and replace the gasket or seal separately since it is not included. Verify bolt-hole spacing, inlet diameter, and outlet orientation against the original part before assembly.

Quality Assurance

Four Seasons lists this part as meeting or exceeding OEM requirements, supporting factory-style replacement expectations for cooling-system repair. Verify fitment by year, make, model, and outlet configuration before installation on Nissan 370Z, INFINITI Q50, or related applications.