The Davies Craig Variable Speed Thermatic® Fan & EWP Controller (Part #0555) gives you precise, intelligent control over your engine's cooling setup. Instead of a basic on/off switch, it automatically adjusts your fan or electric water pump speed based on real-time temperature. This means better cooling efficiency, less strain on your electrical system, and maximum engine protection.

Why Choose This Controller?

• Dual 40A Channels: Two independent outputs let you run dual fans, dual pumps, or a fan and pump combo. (Recommended continuous load: 30A–35A per channel).
• 12V & 24V Ready: Works seamlessly with both 12-Volt and 24-Volt vehicle electrical systems.
• Heat-Soak Prevention: Keeps your fans running for a set time after you turn the key off, cooling the engine safely.
• Built-In Safety Failsafe: If a sensor fails or disconnects, the controller instantly runs your fans at 100% speed to stop overheating.
• Waterproof Design: Rugged IP67 waterproof housing handles tough engine bay environments.
• Manual Overrides: Onboard buttons allow you to force the system on or off instantly when testing or bleeding lines.

Guaranteed Fan Compatibility

This controller is fully compatible with premium brushed high-flow fans, including:

SPAL "EF" Series Brushed Fans:

Fits high-performance SPAL brushed models starting with EF, including: EF3500, EF3503, EF3504, EF3506, EF3510, EF3515, EF3516, EF3518, EF3519, EF3524, EF3527, EF3534, EF3535, EF3546, EF3549, EF3571, EF3589, EF3614, EF3615, EF3632, EF3633, EF3634, and EF3646

Davies Craig Thermatic® Fans:

DC-0107, DC-0108, DC-0135, DC-0136, DC-0147, DC-0148, DC-0150, DC-0151, DC-0155, DC-0156, DC-0160, DC-0161, DC-0162, DC-0163, DC-0164, DC-0165, DC-0166, and DC-0172.

What's Included In The Kit?

You get two different sensors in the box to give you total installation flexibility:

• Sensor 1 (Radiator Probe): Easily pushes directly into your radiator's cooling fins to read core temperatures.
• Sensor 2 (1/4" NPT Thermal Sensor): Threads directly into standard ports on your thermostat housing, engine block, or radiator tank for direct fluid readings.
• Optional Upgrade: Can be used with an M12 x 1.5 Thermal Sensor (Part #0462, sold separately) to fit factory European or modern sensor holes.