Keep the cooling fan cycling on cue with the Standard Ignition Engine Cooling Fan Switch TS-444 (also written TS444), a coolant fan switch that drops in as a direct-fit replacement for the 1999-2004 Honda Odyssey. This thermal switch senses coolant temperature and, at its calibrated set point, makes the electrical contact that signals the fan controller to run the engine cooling fan — helping the cooling system respond as intended. See the Buyer's Guide tab for the full engine application details.
- Temperature-triggered switching: a custom wax formulation expands when heated to activate a snap-action electrical contact and transfer the signal to the fan controller.
- Calibrated and tested: wax pellets are formed for the specified temperature range, and every unit is factory-calibrated and tested to confirm actuation at its rated lower-temperature set point.
- Bimetallic contact arm: built with a formed bimetallic arm whose movement comes from the differing expansion rates of two fused metals — a creep-action design for precise performance.
- Service-grade build: a robust design and high-grade materials meet the demands of today's professional installer, backed by Standard Ignition's quality-controlled manufacturing.
Interchange: WT916 · SW2380 · TS6168 · 37773P8B305 · 37773P8B315 · 37773P8BJ01 · 37773P8E305 · 37773P8EA01 · 37773PB8J01
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this cooling fan switch do?
It's a thermal switch that senses coolant temperature and makes an electrical contact at its calibrated set point, signaling the fan controller to run the engine cooling fan.
Which vehicle does the TS-444 fit?
It's a direct-fit replacement for the 1999-2004 Honda Odyssey. Check the Buyer's Guide tab to confirm the application for your specific vehicle.
How does the switch activate?
A custom wax formulation expands when heated to trigger a snap-action contact, while a formed bimetallic contact arm provides creep-action movement for precise switching.
Is the switch tested before it ships?
Yes. The wax pellets are formed for the specified temperature range, and every unit is factory-calibrated and tested to confirm actuation at its rated set point.
What numbers does this part interchange with?
It cross-references WT916, SW2380, TS6168, 37773P8B305, 37773P8B315, 37773P8BJ01, 37773P8E305, 37773P8EA01, and 37773PB8J01.
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