4010202 Cooling Fan Switch for Polaris Diesel 455 1999

Cooling Fan Switch for Polaris Diesel 455

This cooling fan switch for Polaris Diesel 455 models activates the radiator cooling fan at the factory set temperature to help hold engine temperature in the correct range, and it matches the OEM cross-reference 4010202.

Overview

This cooling fan switch for Polaris Diesel 455 machines is a temperature-triggered electrical part that closes the fan circuit when coolant reaches the set point and opens it again as the engine cools. It replaces the original switch on 1999 Diesel 455 models, making it the right choice when the fan fails to engage or stays running constantly.

Built For Performance

• Temperature-actuated switching built to match the factory fan-on threshold
• Threaded body that installs in the stock switch location
• Sealed electrical connection resists coolant and moisture intrusion
• Corrosion-resistant housing suited to radiator-side exposure
• Two-terminal layout that matches the factory fan circuit
• Cross-referenced to OEM part number 4010202

Fits These Machines

• for Polaris Diesel 455, 1999

On-The-Job Use

• Property and utility work where diesel engines run hot under load
• Slow-speed hauling and towing that limits natural radiator airflow
• Extended idling where the fan carries the cooling load
• Routine service when a fan circuit stops responding to temperature

Specs At A Glance

Good To Know

Q: How can I tell whether the switch or the fan itself has failed? A: If the fan turns when powered directly but does not come on with the engine hot, the switch is the likely culprit. A continuity test at the specified temperature confirms it.

Q: Does installing this require draining the cooling system? A: The switch typically threads into the radiator or a coolant housing, so expect some coolant loss during the swap. Top up with the correct coolant mix once the job is finished.

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