Motorad 381-170 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Acura, Honda, and Nissan

The Motorad Standard 381-170 engine coolant thermostat is designed to maintain optimal engine temperature for select Acura, Honda, and Nissan vehicles. Engineered to open at 170 degrees Fahrenheit, this thermostat ensures efficient coolant flow and engine performance.

• Sealing flange outside diameter: 2.13 inches
• Height between flanges: 1.46 inches
• Overall height: 2.09 inches
• Standard type thermostat with jiggle pin weep hole
• Bypass diameter: 1.09 inches; bypass length: 1.31 inches
• Start to open temperature: 170°F
• Gasket or seal not included

Detailed Product Description

The Motorad Standard 381-170 thermostat is a precision-engineered component designed to regulate engine coolant temperature by opening at 170 degrees Fahrenheit. Its standard type design includes a jiggle pin weep hole, which helps prevent air lock and ensures smooth coolant circulation. The thermostat features a sealing flange outside diameter of 2.13 inches and a height between flanges of 1.46 inches, with an overall height of 2.09 inches. The bypass diameter measures 1.09 inches with a bypass length of 1.31 inches, allowing proper coolant flow during engine warm-up phases. This thermostat is compatible with various Acura, Honda, and Nissan models, including the 200SX, Civic, CR-Z, Frontier, ILX, and Pickup.

About the Motorad Standard Product Line

The Standard line from Motorad offers dependable engine cooling components designed to meet OEM specifications. This product line focuses on delivering consistent performance and durability for everyday driving conditions. The 381-170 thermostat is part of this line, providing a reliable solution for maintaining proper engine temperature in compatible vehicles.

Common Applications and Issues Addressed

• Prevents engine overheating by regulating coolant flow
• Helps avoid poor fuel economy caused by incorrect engine temperature
• Reduces engine wear due to improper thermal management
• Eliminates coolant circulation problems related to stuck thermostats
• Prevents air lock in the cooling system with jiggle pin weep hole

Installation Notes and Tips

Ensure the engine is cool before removing the old thermostat to avoid burns. Verify the sealing flange dimensions match your vehicle’s housing for proper fit. Since this thermostat does not include a gasket or seal, use a compatible gasket during installation. Check for any coolant leaks after installation and properly bleed the cooling system to remove trapped air.

Quality Assurance and Warranty

Motorad Standard thermostats are manufactured to meet industry standards for quality and reliability. While specific warranty details are not provided, Motorad products typically undergo rigorous testing to ensure consistent performance and durability in automotive cooling systems.