Motorad 343-170 Engine Coolant Thermostat Housing Assembly - Main

Integrated Housing Thermostat for Nissan and INFINITI

Motorad 343-170 is an integrated housing thermostat assembly built for vehicles that use a 170 degree Fahrenheit opening temperature. It combines the thermostat, housing, and gasket into one service part for a direct replacement on select Nissan and INFINITI cooling systems.

Designed for applications such as the Nissan 370Z, Maxima, and Pathfinder, as well as INFINITI Q50, Q70, G37, and related models, this Motorad Integrated Housing Thermostat follows OEM specifications and uses OE-style sealing features for a precise fit.

Key Features

• 170 degree Fahrenheit opening temperature for OE-specified cooling control
• Integrated thermostat housing assembly with gasket included
• Bleeder hole and jiggle pin for air relief during service
• 3 bolt holes and 1 outlet port
• Aluminum, stainless steel, and copper construction
• Silver finish
• Offset design with OEM-style seals where applicable
• Motorad part number 343-170

Product Details

Motorad’s Integrated Housing Thermostat line is built to OE supplier standards using OEM-quality materials and manufacturing processes. The copper case and wax compound are engineered for quick response to coolant temperature changes, while the integrated housing format helps simplify replacement on vehicles that use a thermostat and housing assembly together. This part cross-references Dorman OE Solutions 902-5171 for the same application.

Common Cooling System Issues It Can Address

• Engine running cooler or hotter than expected due to thermostat wear
• Coolant leaks at the thermostat housing or sealing surface
• Delayed coolant temperature regulation after warm-up
• Air trapped in the cooling system after thermostat service
• Service issues on vehicles requiring a 170F thermostat housing assembly

Installation Notes and Fitment

Compatible With 2014-2019 INFINITI Q70, 2015-2019 INFINITI Q70L, 2019 Nissan 370Z, 2014-2018 INFINITI Q50, 2009-2018 Nissan 370Z, 2014-2017 INFINITI QX50, 2014-2017 INFINITI QX70, 2015 INFINITI Q40, 2014-2015 INFINITI Q60, 2013 INFINITI EX37, 2013 INFINITI FX37, 2009-2013 INFINITI G37, 2012-2013 INFINITI M35h, 2011-2013 INFINITI M37, 2011-2012 INFINITI EX35, 2011-2012 INFINITI FX35, 2011-2012 INFINITI G25, 2008 INFINITI G37, 2001-2002 Nissan Pathfinder, 1996-2001 INFINITI I30, 2000-2001 Nissan Maxima, and 1995-1999 Nissan Maxima. Verify the 170F specification and housing style before installation, and transfer only the components required by the vehicle design. The bleeder hole and jiggle pin help with air evacuation during refill.

Quality Assurance

Manufactured by an OE supplier using OEM specifications and processes, this thermostat housing assembly is built to meet the demands of modern cooling systems. Motorad 343-170 is engineered for consistent temperature control and dependable sealing in service applications.