Motorad 298-170 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Lexus, Toyota, and More

The Motorad Standard 298-170 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 170 degrees Fahrenheit, this thermostat ensures efficient coolant flow and engine performance.

• Sealing flange outside diameter: 2.2 inches
• Bypass diameter: 1.09 inches
• Bypass length: 1.34 inches
• Flange thickness: 0.05 inches
• Includes jiggle pin weep hole for air bleeding
• Temperature rating: 170°F
• Gasket or seal not included

Detailed Product Description

The Motorad Standard 298-170 thermostat is a precision-engineered component that regulates coolant flow based on engine temperature. Its 2.2-inch sealing flange outside diameter and 0.05-inch flange thickness provide a secure fit within the cooling system housing. The built-in jiggle pin weep hole allows trapped air to escape, preventing air pockets that can cause overheating. With a bypass diameter of 1.09 inches and a bypass length of 1.34 inches, this thermostat supports proper coolant circulation during warm-up phases, helping maintain consistent engine temperature.

Part of the Motorad Standard product line, this thermostat offers dependable performance for everyday driving conditions. The Standard line focuses on delivering quality replacement parts that meet OEM specifications without additional installation tools or hardware, making it suitable for professional mechanics and experienced DIYers alike.

Compatible Vehicles and Applications

• Compatible with Lexus models including GS300, IS300, and SC300
• Fits Toyota vehicles such as 4Runner, Echo, Hiace, Hilux, Previa, Prius, Supra, T100, Tacoma, xA, xB, Yaris, and Yaris R
• Suitable for Mitsubishi Lancer and Outlander models
• Designed for Scion xA and xB models

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Poor engine warm-up performance
• Coolant flow restriction causing temperature fluctuations
• Air pockets in the cooling system leading to inefficient cooling
• Inconsistent engine temperature regulation

Installation Notes and Tips

This thermostat does not include a gasket or seal, so ensure you have the correct sealing components for your vehicle’s cooling system. The jiggle pin weep hole aids in bleeding air during installation, which helps prevent overheating issues caused by trapped air. Verify the 170°F temperature rating matches your vehicle’s specifications before installation. Professional installation is recommended to ensure proper fit and function.

Quality Assurance and Warranty

The Motorad Standard 298-170 thermostat is manufactured to meet OEM standards for durability and performance. While specific warranty details are not provided, Motorad products typically undergo rigorous quality control to ensure reliability in automotive cooling systems.