Description
Maintaining optimal engine temperature is critical to both performance and longevity—and the Derale 190F Fan Switch Thermostat Relay Kit gives you precise control over your cooling system. Rather than relying on your vehicle’s factory thermostat, this kit lets you set an exact engagement point tailored to your engine’s needs, whether you’re tracking heat during high-performance driving or fine-tuning street applications. The included relay and complete harness make installation straightforward, turning a complex upgrade into a bolt-on solution.
- Fan activation: 190°F
- Fan shutoff: 175°F
- Temperature sensor: 1/8 in NPT
- Bushing adapter: 3/8 in NPT
- Relay rating: 25 amp
- Includes complete harness
- Kit format: ready-to-install






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