Motorad 1031-180 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for OE Cooling Control

Motorad 1031-180 is an integrated housing thermostat assembly built for precise coolant temperature control in select Infiniti and Nissan applications. It combines the thermostat, housing, and gasket into one service part with an OE-specified 180°F opening temperature for direct replacement service.

Compatible With 2007-2010 Infiniti G35, EX35, FX35, and M35, plus 2007-2009 Nissan 350Z applications listed below.

Key Features

• Integrated housing thermostat assembly for simplified cooling system service
• 180°F opening temperature and 180°F start-to-open temperature
• Metal housing with silver finish
• Includes gasket/seal and jiggle pin
• 3-bolt flange design with 1.38 in outlet diameter
• OE supplier manufacturing standards and OEM specification processes
• Copper case and wax compound for responsive coolant temperature changes

Detailed Description

This Motorad Integrated Housing Thermostat is engineered for vehicles that require a thermostat housing assembly rather than a standalone thermostat. The 4.15 in flange length, 4.15 in flange width, and 0.94 in flange thickness support a direct-fit style installation, while the paper gasket/seal helps complete the sealing surface during replacement. Motorad 1031-180 is built with OEM-quality materials and follows OEM specifications and processes to meet the demands of modern engine cooling systems. This part cross-references NGK 51031 for the same application.

Use Motorad 1031-180 when servicing cooling system temperature regulation on 2007-2008 Infiniti G35, 2008-2010 Infiniti EX35, 2009-2010 Infiniti FX35, 2009-2010 Infiniti M35, and 2007-2009 Nissan 350Z models listed in the fitment data. The 180°F calibration supports OE-specified coolant control for these applications.

What This Part Helps Address

• Engine running too cool or too warm due to thermostat control issues
• Coolant temperature instability during normal driving
• Leaking thermostat housing or degraded sealing surface
• Service replacement for an integrated thermostat and housing assembly
• Cooling system maintenance on Infiniti G35, EX35, FX35, M35, and Nissan 350Z applications

Installation Notes and Tips

Drain coolant before removal, clean the mating surfaces thoroughly, and verify the flange and outlet alignment before tightening the 3-bolt housing. Replace the assembly only after confirming the cooling system is free of contamination and air pockets. The included gasket/seal and jiggle pin support proper reassembly, but bolts and mounting hardware are not included.

Quality Assurance

Motorad manufactures this thermostat housing assembly with OEM-quality materials and safety standards as an OE supplier. The copper case and wax compound are selected for fast response to coolant temperature changes, and the part is produced to OEM specifications for consistent cooling system service.