ISR 60° Thermostat | Nissan 240SX/Silvia/Pulsar GTi-R (89-98) (IS-21200-60)ISR Performance ISR 60 Thermostat Part #: IS 21200 60 Overview The ISR 60 Thermostat is a high quality cooling component designed to optimize your vehicles engine temperature management. Engineered for performance oriented drivers and enthusiasts, this thermostat helps maintain consistent operating temperatures, which can support improved engine efficiency and reliability. Its precise temperature regulation ensures your engine runs smoothly under
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