American Volt Electric Radiator Fan Thermostat Replacement, 1/4″ NPT, 180°F ON / 165°F OFF, 12-Month Warranty

Restore dependable engine cooling fan operation with the Wholesale Sensors Replacement American Volt Electric Radiator Fan Thermostat Temperature Switch. Featuring a 1/4-inch NPT thread-in brass probe, this automatic temperature switch is designed for compatible electric radiator fan systems requiring 180°F ON and 165°F OFF switching temperatures.

Designed as an OEM-style replacement for compatible American Volt aftermarket cooling systems, this radiator fan thermostat helps control electric cooling fan operation based on engine coolant temperature.

Whether maintaining a classic car, repairing an aftermarket cooling system, or upgrading a custom radiator installation, this temperature-activated switch provides automatic fan control for compatible applications.

Automatic 180°F ON / 165°F OFF Temperature Control

The American Volt-style electric radiator fan thermostat operates according to two temperature thresholds:

• Fan Activation Temperature: 180°F (approximately 82°C)
• Fan Deactivation Temperature: 165°F (approximately 74°C)
• Temperature Differential: 15°F
• Thread Size: 1/4-inch NPT
• Probe Material: Brass
• Application: Electric radiator fan temperature control

When coolant temperature reaches approximately 180°F, the thermostat changes electrical state to activate the compatible cooling fan control circuit.

As coolant temperature decreases to approximately 165°F, the thermostat returns to its original state, allowing the fan control circuit to deactivate.

The 15°F switching differential helps reduce unnecessary fan cycling while supporting consistent automatic cooling fan operation.

Compatible American Volt and Aftermarket Cooling Systems

The 1/4-inch NPT radiator fan thermostat switch is designed for compatible automotive cooling applications, including:

• American Volt electric radiator fan systems
• Aftermarket electric cooling fan kits
• Universal radiator fan relay controllers
• Custom automotive cooling systems
• Classic car restoration projects
• Hot rods and street rods
• Performance vehicles
• Modified cars and trucks
• Custom radiator installations
• Engine cooling system upgrades

This universal temperature switch is not limited to a specific vehicle production year.

Compatibility depends on the coolant port thread size, required switching temperatures, electrical characteristics, and fan control circuit configuration.

Important: This product uses a 1/4-inch NPT threaded probe. It is not interchangeable with 1/8-inch NPT switches without an appropriate, compatible fitting.

Durable Thread-in Brass Temperature Probe

The Wholesale Sensors electric radiator fan thermostat replacement features a brass probe designed for direct temperature sensing in compatible engine cooling applications.

Brass provides effective thermal conductivity, allowing the temperature-sensitive switching mechanism to respond to coolant temperature changes.

The threaded 1/4-inch NPT connection supports installation into a matching coolant passage or suitable radiator fitting.

Proper installation helps maintain secure positioning and prevents coolant leakage at the threaded connection.

The thermostat is designed to provide automatic temperature-based electrical switching rather than continuous temperature measurement.

Helps Resolve Common Electric Radiator Fan Problems

A defective radiator fan temperature switch may contribute to several engine cooling problems, including:

• Electric radiator fan not turning on
• Cooling fan activating too late
• Fan failing to activate at the intended temperature
• Irregular radiator fan cycling
• Intermittent fan operation
• Fan remaining off despite rising coolant temperature
• Inconsistent automatic cooling fan control
• Engine overheating associated with failed fan activation

Replacing a confirmed faulty thermostat may help restore automatic fan control.

However, similar symptoms can result from defective fan motors, damaged relays, blown fuses, wiring faults, poor electrical connections, or other cooling system problems.

Proper diagnosis is recommended before replacing automotive cooling components.

Reliable Automatic Cooling Fan Switching

The 180°F ON / 165°F OFF radiator fan temperature switch helps automate cooling fan operation without requiring continuous manual activation.

When the engine reaches the specified activation temperature, the switch changes state to operate the compatible electrical control circuit.

As coolant temperature decreases, the switch returns to its original state at the specified shutoff temperature.

This temperature-responsive operation supports consistent fan control during normal engine operation.

For reliable performance, the thermostat must be matched to the correct electrical circuit and switching requirements.

A properly rated relay may be necessary depending on the fan motor’s electrical requirements.

Straightforward Radiator Fan Thermostat Installation

Before installation, turn off the engine and allow the cooling system to cool completely.

Locate a compatible 1/4-inch NPT threaded coolant port and verify that the replacement thermostat matches the original thread size.

Install the brass probe using an appropriate sealing method suitable for the cooling system.

Connect the thermostat according to the cooling fan controller or relay manufacturer’s wiring instructions.

Confirm that the thermostat’s electrical ratings are compatible with the intended control circuit.

After installation, inspect the connection for coolant leaks and verify that the fan activates and deactivates at the specified temperatures.

Never connect a cooling fan motor directly to the thermostat unless the switch is specifically rated for the motor’s electrical load.

Automotive Diagnostic Codes and Troubleshooting

This radiator fan thermostat is a temperature-activated electrical switch, not a universal engine coolant temperature sensor connected to the vehicle’s electronic control module.

Automotive diagnostic trouble codes vary depending on the vehicle and cooling fan control system.

Replacing this thermostat is not guaranteed to resolve a particular OBD-II code.

If cooling fan problems continue after installation, inspect the relay, fan motor, fuse, wiring, electrical connections, and other cooling system components.

Ideal for Automotive Repairs and Custom Cooling Projects

The Wholesale Sensors American Volt Electric Radiator Fan Thermostat Replacement is suitable for automotive repair professionals, restoration shops, performance vehicle builders, and DIY enthusiasts working with compatible aftermarket electric cooling systems.

Its automatic 180°F activation, 165°F deactivation, and 1/4-inch NPT brass probe make it a practical replacement for systems requiring these specifications.

Whether repairing an existing electric cooling fan controller or maintaining a custom radiator installation, selecting the correct temperature switch helps support dependable cooling fan operation.

12-Month Warranty and USA-Based Support

Wholesale Sensors specializes in replacement automotive temperature switches, radiator fan thermostats, pressure sensors, thermistors, temperature probes, and related sensing components.

The Wholesale Sensors Replacement American Volt Electric Radiator Fan Thermostat provides an OEM-style aftermarket replacement for compatible cooling systems requiring a 1/4-inch NPT brass probe with 180°F ON / 165°F OFF switching temperatures.

Every replacement includes a 12-month warranty and responsive USA-based customer support, providing added confidence for automotive technicians, restoration specialists, performance vehicle enthusiasts, and custom cooling system installers.

Choose Wholesale Sensors for dependable aftermarket temperature-control components and reliable customer support.