4010202 Cooling Fan Switch for Polaris Magnum 425 500 1996-1999

Cooling Fan Switch for Polaris Magnum 425 & 500

This cooling fan switch for Polaris Magnum 425 and 500 models activates the radiator cooling fan at the set temperature to help keep the engine within its proper operating range, and it matches the OEM cross-reference 4010202.

Overview

This cooling fan switch for Polaris Magnum 425 and 500 machines is a temperature-triggered electrical component that closes the fan circuit once coolant reaches the set point, then opens it again as the engine cools. It is a direct replacement for the original switch on 1996 through 1999 Magnum 425 and 500 models, making it a practical fix for a fan that never comes on or never shuts off.

Built For Performance

• Temperature-actuated switching rated to match the original fan-on threshold
• Threaded body sized to thread into the factory switch location
• Sealed electrical connection resists coolant seepage and moisture
• Corrosion-resistant housing built for radiator-side exposure
• Two-terminal design that matches the factory fan circuit
• Cross-referenced to OEM part number 4010202

Fits These Machines

• for Polaris Magnum 425, 1996-1999
• for Polaris Magnum 500, 1996-1999

On-The-Job Use

• Trail riding where engine temperature climbs on long climbs and tight sections
• Farm and property work such as hauling, spraying, and towing at low ground speed
• Idle-heavy use where airflow through the radiator depends on the fan
• Seasonal maintenance when the fan circuit stops responding to temperature

Specs At A Glance

Good To Know

Q: How do I know the fan switch is the problem and not the fan? A: If the fan runs when power is applied directly but never comes on with the engine hot, the switch is the usual cause. Testing the switch for continuity at the specified temperature is the simplest way to confirm.

Q: Will I need to drain the cooling system to install it? A: On most Magnum models the switch threads into the radiator or thermostat housing, so some coolant loss is normal. Drain or clamp off as needed and refill with the correct coolant mix afterward.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.