Aisin THF-007 Engine Coolant Thermostat - Rear or Upper

Reliable Engine Coolant Thermostat for Toyota, Subaru, and Scion Vehicles

The Aisin THF-007 engine coolant thermostat is designed to maintain optimal engine temperature for select Toyota, Subaru, and Scion models. Engineered with durable brass and stainless steel materials, this thermostat ensures consistent performance and longevity in your vehicle's cooling system.

• Constructed from high-quality brass and stainless steel for durability
• In-line design with a 34.0 mm sealing flange outside diameter
• Includes gasket or seal for secure installation
• Starts to open at 50.0°C to regulate engine temperature effectively
• Compatible with Toyota 86, Subaru BRZ, Crosstrek, Forester, Impreza, Legacy, Outback, XV Crosstrek, and Scion Ascent models

About the Aisin Original Equipment Manufacturer Product Line

This thermostat is part of Aisin's Original Equipment Manufacturer (OEM) line, which focuses on delivering components that meet or exceed the specifications of the original parts installed by vehicle manufacturers. The OEM line ensures precise fitment and reliable operation, making it suitable for maintaining the performance and safety standards of your Toyota, Subaru, or Scion vehicle.

Detailed Product Description

The Aisin THF-007 engine coolant thermostat features an in-line design that integrates seamlessly into the cooling system. Its brass and stainless steel construction provides resistance to corrosion and wear, essential for maintaining consistent engine temperature control. The thermostat begins to open at 50.0°C, allowing coolant flow to regulate engine heat efficiently. The included gasket or seal ensures a tight fit, preventing leaks and maintaining system integrity. With a sealing flange outside diameter of 34.0 mm, this thermostat is engineered for precise compatibility with specified vehicle models.

Common Applications and Issues Addressed

• Regulates engine temperature to prevent overheating
• Replaces faulty or stuck thermostats causing poor engine performance
• Prevents coolant leaks with included gasket or seal
• Restores proper coolant flow in Toyota 86, Subaru BRZ, and Crosstrek cooling systems
• Maintains engine efficiency in Subaru Forester, Impreza, Legacy, Outback, and Scion Ascent vehicles

Installation Notes and Tips

When installing the Aisin THF-007 thermostat, ensure the engine is cool before beginning work. Verify the sealing flange outside diameter matches the vehicle’s housing to avoid leaks. Replace the gasket or seal included with the thermostat to maintain a secure fit. Proper torque specifications should be followed to prevent damage to the thermostat housing. This part is compatible with specific Toyota, Subaru, and Scion models, so confirm fitment before installation.

Quality Assurance and Warranty

Aisin’s Original Equipment Manufacturer line adheres to strict quality control standards to ensure reliable performance and durability. The THF-007 thermostat is manufactured to meet OEM specifications, providing confidence in fit and function. Warranty coverage details should be confirmed with the distributor or vehicle manufacturer, as they may vary by region and application.