Description
Product Overview
The American Volt AV-FXXTXX thermostat switch is an automatic, 12‑volt control device engineered for in‑line hose fittings of AN size. Constructed from black anodized aluminum, it offers superior corrosion resistance and a smooth exterior finish. The unit features a normally open contact that closes at the preset temperature, delivering power to a 12V accessory such as a cooling fan. With a touch control method and X‑10 connectivity protocol, it integrates seamlessly into modern engine cooling systems.
Usage
Designed for automotive applications, this thermostat is ideal for monitoring and regulating temperatures of engine oil, coolant, and water lines. Install it directly onto the cooler’s inlet using the appropriate AN fitting size, then connect the 12V accessory to manage fan operation automatically. Suitable for both DIY vehicle owners and professional mechanics, it performs reliably in a range of temperatures from 140°F to 250°F, making it perfect for performance upgrades, race cars, and everyday commuter vehicles.

Why Choose Us
American Volt combines precision engineering with high‑quality materials to deliver a thermostat that stands up to harsh engine environments. The black anodized aluminum housing resists rust and wear, while the 12V automatic circuit ensures consistent fan activation at the exact temperature you set. Backed by a solid reputation in automotive replacement accessories and positive customer reviews, this product offers dependable performance without the need for complex wiring or additional components.
Key Features
- Automatic 12V operation closes circuit at selected temperature
- Black anodized aluminum housing for corrosion resistance
- Fits standard AN‑size in‑line hose fittings for easy installation
- Touch control method with X‑10 connectivity protocol
- Versatile use for oil, coolant, and water temperature monitoring
FAQ
What size AN fitting does this thermostat support?
The thermostat is compatible with standard AN‑size fittings ranging from 6AN to 12AN, allowing direct threading onto most engine cooler inlets.
Can I use this thermostat with a water cooling system?
Yes, the unit measures liquid temperatures for water, coolant, and oil, making it suitable for water‑cooled engine setups.
Is any additional wiring required?
Only a simple 12V power connection to the accessory (such as a fan) is needed; the thermostat handles the switching automatically.
What is the operating temperature range?
The thermostat can be set to close the circuit anywhere between 140°F and 250°F, covering most automotive cooling needs.
Does the black anodized finish affect heat dissipation?
No, the anodized coating provides corrosion protection without impeding the thermostat’s ability to sense temperature accurately.






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