The HONEYWELL Part 3450HR04550008 is a high-quality Phenolic Thermostat designed for automotive applications. This automatic reset thermostat is ideal for regulating temperature in automotive systems. It features an open-on-rise mechanism, meaning it activates when the temperature rises above the set point. With its two-pin design, it offers simple and reliable installation. This thermostat is built to last, ensuring optimal performance and durability in automotive environments.