Motorad 301-180 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Infiniti, Nissan, and Mitsubishi

The Motorad Standard 301-180 engine coolant thermostat is designed to maintain optimal engine temperature for select Infiniti, Nissan, and Mitsubishi vehicles. Engineered to open at 180°F, this thermostat ensures efficient coolant flow and engine performance.

• Sealing flange outside diameter: 2.52 inches
• Height between flanges: 1.66 inches
• Overall height: 2.37 inches
• Standard type thermostat with jiggle pin weep hole
• Includes rubber gasket with O-ring seal for secure fit
• Bypass diameter: 1.14 inches; bypass length: 1.65 inches
• Flange thickness: 0.05 inches
• Start to open temperature: 180°F
• One seal included; installation tool not included

About the Motorad Standard Product Line

The Motorad Standard line offers dependable engine cooling components designed to meet OEM specifications. This line focuses on providing quality replacement parts like the 301-180 thermostat, which balances performance and durability for everyday driving conditions in vehicles such as the Infiniti Q70, Nissan Frontier, and Mitsubishi Montero Sport.

Product Details and Specifications

The Motorad Standard 301-180 thermostat features a 2.52-inch sealing flange outside diameter and a height of 2.37 inches, ensuring proper fitment within the cooling system. The included rubber gasket with an O-ring seal provides a reliable seal to prevent leaks. The thermostat opens at 180 degrees Fahrenheit, allowing coolant to circulate once the engine reaches optimal operating temperature. The jiggle pin weep hole helps prevent air pockets, promoting consistent coolant flow. This thermostat is compatible with bypass systems featuring a 1.14-inch diameter and 1.65-inch length, and the flange thickness measures 0.05 inches for precise installation.

Compatible Vehicles and Applications

• Infiniti Q70 and Q70L
• Infiniti QX70
• Nissan Frontier and Pickup
• Nissan NV350 Urvan
• Mitsubishi 3000GT, Diamante, Montero, and Montero Sport

This thermostat is designed to regulate engine temperature effectively in these models, helping to prevent overheating and improve engine efficiency.

Common Issues Addressed by This Thermostat

• Engine overheating due to stuck closed thermostat
• Poor heater performance from improper coolant flow
• Coolant leaks caused by worn seals or gaskets
• Engine running too cold, reducing fuel efficiency
• Air pockets in cooling system affecting temperature regulation

Installation Notes and Tips

Ensure the engine is cool before removing the old thermostat. Clean the housing surface thoroughly to remove old gasket material. The Motorad 301-180 includes a rubber gasket with an O-ring seal; replace the gasket during installation to prevent leaks. Note that no installation tool is included, so use appropriate hand tools and follow vehicle-specific service manual instructions. Verify the jiggle pin weep hole is oriented correctly to allow air to escape from the cooling system.

Quality Assurance and Warranty

Motorad Standard thermostats are manufactured to meet OEM standards for fit and function. The 301-180 thermostat includes a high-quality rubber gasket and O-ring seal to ensure a secure, leak-free installation. While specific warranty details are not provided, Motorad products typically adhere to industry quality controls to support reliable engine cooling system performance.