Motorad 5298-180 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Lexus, Toyota, and More

The Motorad UltraStat 5298-180 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 degrees Fahrenheit, this thermostat ensures efficient coolant flow and engine performance.

• Sealing flange outside diameter: 2.2 inches
• Bypass diameter: 1.09 inches with a length of 1.34 inches
• Flange thickness: 0.05 inches for precise fitment
• Includes jiggle pin weep hole for air bleeding
• Compatible with multiple makes and models such as Lexus GS300, Toyota Tacoma, and Mitsubishi Lancer

About the Motorad UltraStat Product Line

The UltraStat line by Motorad focuses on delivering thermostats that meet exacting OEM specifications. This product line emphasizes precise temperature control and durability, making it suitable for a variety of engine cooling systems. The 5298-180 thermostat is part of this line, offering consistent performance at a 180-degree Fahrenheit opening temperature.

Technical Details and Features

This engine coolant thermostat features a 2.2-inch sealing flange outside diameter, ensuring a secure seal within the cooling system. The jiggle pin weep hole allows trapped air to escape, preventing air pockets that can cause overheating. The bypass diameter of 1.09 inches and length of 1.34 inches facilitate proper coolant circulation during thermostat operation. With a flange thickness of 0.05 inches, the thermostat fits precisely in the housing without leaks. Note that this part does not include a gasket or seal, and no installation tool is provided.

Compatible Vehicles and Applications

• Lexus models including GS300, IS300, and SC300
• Toyota models such as 4Runner, Tacoma, Supra, Prius, and Yaris
• Mitsubishi vehicles including Lancer and Outlander
• Scion models like xA and xB
• Other compatible models: Echo, Hiace, Hilux, Previa, T100, Yaris R

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Poor engine warm-up times affecting fuel efficiency
• Coolant flow restriction causing temperature fluctuations
• Air pockets in the cooling system leading to hot spots
• Inconsistent engine temperature regulation impacting performance

Installation Notes and Tips

Ensure the thermostat housing is clean and free of old gasket material before installation. Since this part does not include a gasket or seal, use a compatible gasket recommended for your vehicle. The jiggle pin weep hole should be oriented at the highest point to allow air to escape. No special installation tools are included, so standard hand tools are sufficient. Verify the thermostat opens at 180 degrees Fahrenheit to match engine specifications.

Quality Assurance and Warranty

The Motorad UltraStat 5298-180 thermostat is manufactured to meet OEM standards for durability and performance. While no specific warranty information is provided, Motorad products typically undergo rigorous quality control to ensure reliability in engine cooling applications.