Motorad 298-180 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Lexus, Toyota, and More

The Motorad Standard 298-180 engine coolant thermostat is designed to maintain optimal engine temperature for a range of vehicles including Lexus, Toyota, Mitsubishi, and Scion models. Engineered to open at 180°F, this thermostat ensures efficient coolant flow and engine performance.

• Standard type engine coolant thermostat with jiggle pin weep hole
• Sealing flange outside diameter: 2.2 inches
• Height between flanges: 1.44 inches; overall height: 2.05 inches
• Bypass diameter: 1.09 inches; bypass length: 1.34 inches
• Flange thickness: 0.05 inches; no gasket or seal included
• Start to open temperature: 180°F for consistent engine temperature regulation

Detailed Product Description

The Motorad Standard 298-180 thermostat is a precision-engineered component designed to regulate coolant flow in engines by opening at a temperature of 180 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 with an outside diameter of 2.2 inches and a flange thickness of 0.05 inches, providing a secure fit within the cooling system. The height between flanges measures 1.44 inches, with an overall height of 2.05 inches, making it compatible with specific engine housings.

This thermostat is compatible with a variety of vehicle makes and models, including Lexus 4Runner, GS300, IS300, SC300, and Toyota models such as Echo, Hiace, Hilux, Prius, Supra, Tacoma, T100, and Yaris, as well as Mitsubishi Lancer and Outlander, Scion xA and xB, and Toyota Previa and Yaris R. The bypass diameter of 1.09 inches and bypass length of 1.34 inches support proper coolant flow through the bypass circuit, maintaining engine temperature stability.

About the Motorad Standard Product Line

The Motorad Standard line offers dependable, OEM-quality replacement parts designed to meet original equipment specifications. The Standard line focuses on delivering reliable performance and fitment for a wide range of vehicles, making the 298-180 thermostat a suitable choice for maintaining proper engine cooling in compatible Lexus, Toyota, Mitsubishi, and Scion models.

Common Applications and Issues Addressed

• Prevents engine overheating by regulating coolant flow
• Eliminates engine temperature fluctuations and improves warm-up time
• Reduces risk of coolant leaks due to proper flange sealing
• Helps avoid air lock in the cooling system with jiggle pin weep hole
• Supports efficient engine operation in Lexus 4Runner, Toyota Tacoma, and Mitsubishi Lancer vehicles

Installation Notes and Tips

• Ensure the engine is cool before removing the old thermostat
• Check the housing and sealing surfaces for damage or corrosion
• Use the correct torque specifications when installing the thermostat flange
• Note that this thermostat does not include a gasket or seal; reuse the original or install a new gasket as needed
• Bleed the cooling system properly to remove air pockets after installation

Quality Assurance and Warranty

The Motorad Standard 298-180 thermostat is manufactured to meet strict quality standards for durability and performance. While no gasket or installation tool is included, the thermostat is designed for direct replacement in compatible vehicles. Warranty coverage details should be confirmed with the parts distributor or manufacturer to ensure protection against defects.