Motorad 301-180 Engine Coolant Thermostat

180F Engine Coolant Thermostat

Motorad Standard 301-180 is an engine coolant thermostat built to OE specifications for stable temperature control in demanding cooling systems. It uses a copper case and wax compound for quick reaction to coolant temperature changes, and it includes an O-ring seal and jiggle pin weep hole for service-ready installation.

Compatible With select Infiniti Q70, Q70L, QX70, Mitsubishi Montero, Montero Sport, Diamante, 3000GT, and Nissan Frontier applications, this 180-degree thermostat supports proper warm-up and regulated coolant flow. The Motorad 301-180 is a direct-fit style replacement for vehicles that call for a standard 180F thermostat with seal.

Key Features

• Standard engine coolant thermostat with 180°F opening temperature
• Manufactured to OEM specifications and processes
• Copper case and wax compound for responsive temperature control
• Includes gasket/seal with rubber O-ring sealing design
• Jiggle pin weep hole and air relief valve design where applicable
• Offset design and OEM-style seals included where applicable
• Sealing flange outside diameter: 2.52 in.
• Height: 2.37 in.; height between flanges: 1.66 in.
• Bypass diameter: 1.14 in.; bypass length: 1.65 in.

Product Details

The Motorad Standard line focuses on OE-style cooling system service parts built for consistent fit and function. Part number 301-180 is an engine coolant thermostat for applications that require a 180-degree opening point, including select 1991-2019 Mitsubishi 3000GT, Diamante, Montero, and Montero Sport models, plus select 2008 Nissan Frontier and 2016-2019 Infiniti Q70 and Q70L applications. It is also listed for 2017-2019 Infiniti QX70 and 2014-2015 Nissan NV350 Urvan coverage.

This thermostat cross-references Anchor 3118 for the same application.

Common Cooling System Issues

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuation caused by a thermostat that opens inconsistently
• Coolant flow control problems in a worn or sticking thermostat
• Seal leakage at the thermostat housing interface
• Service replacement for a 180F thermostat with seal requirement

Installation Notes

Verify the required opening temperature, seal style, and housing dimensions before installation. Clean the thermostat housing mating surfaces, inspect the coolant condition, and confirm the jiggle pin orientation matches the vehicle service procedure. This part does not include an installation tool.

For vehicle-specific service, confirm the application against your Infiniti Q70, Q70L, or QX70, or Mitsubishi Montero and 3000GT fitment listing before installation.

Quality Assurance

Motorad manufactures this thermostat with OEM-quality materials and safety standards as an OE supplier. The design is built to meet OEM specifications and to handle demanding automotive cooling system conditions.