Description
The ISR Performance Thermostat (Part Number: IS-21200-31U03) is engineered specifically for Nissan engines equipped with the VQ35HR and VQ37VHR series. Designed to maintain a consistent operating temperature, this thermostat ensures your engine runs efficiently and reliably during various driving conditions. Crafted with precision, it features a 68-degree Fahrenheit opening temperature that optimizes coolant flow and engine performance. Whether you’re upgrading your vehicle or restoring it, this thermostat offers a durable and effective solution to prevent overheating and improve overall engine longevity. Its robust construction guarantees long-term performance, making it an essential part for enthusiasts and professionals alike.
Features:
- Engine Compatibility: Designed for Nissan VQ35HR and VQ37VHR engines
- Temperature Regulation: Opens at 68°F to maintain optimal engine temperature
- Durable Construction: Built for long-lasting performance under demanding conditions
- Precision Engineering: Ensures accurate coolant flow and temperature control
- Easy Installation: Designed to fit seamlessly into your existing cooling system


















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