Aisin THH-015 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Honda Civic and CR-V

The Aisin THH-015 engine coolant thermostat is designed to maintain optimal engine temperature for Honda Civic and CR-V models. Crafted with durable brass and stainless steel materials, this thermostat ensures consistent performance and longevity in your vehicle's cooling system.

• Constructed from brass and stainless steel for durability
• Bottom by-pass design for efficient coolant flow
• Sealing flange outside diameter of 52.0 mm for precise fit
• Includes gasket or seal for secure installation
• Start to open temperature at 78°C for accurate temperature regulation

Detailed Features of the Aisin THH-015 Thermostat

This engine coolant thermostat features a bottom by-pass design that allows coolant to circulate effectively even when the thermostat is closed, helping to prevent engine overheating. The combination of brass and stainless steel materials provides resistance to corrosion and wear, extending the life of the thermostat. The sealing flange with a 52.0 mm outside diameter ensures a tight fit within the cooling system, minimizing leaks. The thermostat begins to open at 78°C, allowing coolant to flow through the radiator and maintain the engine at the correct operating temperature. A gasket or seal is included to support a secure and leak-free installation.

Original Equipment Manufacturer Product Line

The Aisin Original Equipment Manufacturer (OEM) product line is engineered to meet the exact specifications of the original parts used in Honda vehicles. This ensures compatibility and reliable performance, making the THH-015 thermostat a suitable replacement for maintaining your Honda Civic or CR-V's cooling system integrity.

Common Applications and Issues Addressed

• Regulates engine temperature to prevent overheating
• Maintains efficient coolant flow with bottom by-pass design
• Prevents coolant leaks with included gasket or seal
• Supports engine warm-up by opening at 78°C
• Replaces faulty or worn thermostats in Honda Civic and CR-V models

Installation Notes and Tips

When installing the Aisin THH-015 thermostat, ensure the sealing flange is properly seated to prevent leaks. Verify the thermostat orientation matches the bottom by-pass design for correct coolant flow. It is recommended to replace the gasket or seal during installation to maintain a secure fit. Always follow vehicle-specific service manual instructions for removal and installation procedures.

Quality Assurance and Warranty

Aisin's Original Equipment Manufacturer line adheres to strict quality standards to ensure reliable performance and durability. The THH-015 thermostat is manufactured to meet or exceed OEM specifications for Honda Civic and CR-V vehicles. Warranty details should be confirmed with the distributor or retailer at the time of purchase.