Motorad 431-180 Engine Coolant Thermostat Housing Assembly

Integrated Thermostat Housing for Nissan and INFINITI

Motorad 431-180 is an engine coolant thermostat housing assembly built to OE specifications for select Nissan and INFINITI applications. It combines the thermostat, housing, and gasket in an integrated design for a direct-fit cooling system service part.

Compatible With 2002-2008 Nissan Maxima, 2002-2006 Nissan Altima, 2003-2007 Nissan Murano, 2008 Nissan Murano, 2004-2009 Nissan Quest, and 2002-2004 INFINITI I35. This Motorad 431-180 thermostat housing assembly is set to a 180 Deg. F opening temperature for OE-specified cooling performance.

Key Features

• Integrated housing thermostat assembly with thermostat, housing, and gasket
• 180 Deg. F opening temperature for OE-specified operation
• Aluminum, stainless steel, and copper construction
• Three bolt holes for secure mounting
• Two outlet ports with 1.38 in and 0.51 in outlet diameters
• Paper gasket/seal included
• Silver finish
• OE supplier manufacturing with OEM-quality materials and processes

Product Details

Motorad’s Integrated Housing Thermostat line focuses on OE-style cooling system service parts built around factory-style fit and function. The 431-180 uses a copper case and wax compound for quick response to coolant temperature changes, along with an offset design and air relief valve where applicable. For drivers servicing a Nissan Maxima thermostat housing, Nissan Altima coolant thermostat housing, or INFINITI I35 thermostat housing assembly, this part number provides a direct replacement format that matches the original integrated design.

This part cross-references Dorman - OE Solutions 902-5125 and BBB Industries 14778 for the same application.

Common Cooling System Issues It Can Address

• Engine running cooler or warmer than the specified 180 Deg. F range
• Coolant leaks at the thermostat housing or gasket interface
• Delayed thermostat response during temperature changes
• Service replacement for a worn integrated thermostat housing assembly
• Cooling system maintenance on Nissan Murano, Nissan Quest, Nissan Maxima, Nissan Altima, and INFINITI I35 applications

Installation Notes and Tips

• Verify the OE-specified 180 Deg. F temperature before installation.
• Inspect mating surfaces and clean the housing flange before fitting the paper gasket.
• Replace coolant according to the vehicle service procedure after installation.
• Confirm hose routing and outlet port alignment on the integrated housing.
• Use the vehicle’s factory torque sequence and specifications for the three-bolt mounting pattern.

Quality Assurance

Motorad manufactures this thermostat housing assembly with OEM-quality materials and safety standards as an OE supplier. The part is built to OEM specifications and processes for demanding automotive cooling systems.