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Four Seasons 37489 Engine Cooling Fan Temperature Switch
| Brand | Four Seasons 37489 |
|---|---|
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Description | Switch-Temp /Radiator Mount |
| Function | temperature switch |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | System Mount |
| Style | Temperature |
| Terminal Quantity | 2 |
| Type | Temperature |
| Product line | Temperature Switch |
| Fits | INFINITI · 6 vehicles |
OE direct replacement. Meets OEM requirements for dependable temperature control.
Rectangular connector. Female 2-terminal design for a secure electrical connection.
Temperature switch. Built for cooling system temperature control.
Cross-references Four Seasons 37489, A03889 and SW4933 for the same application. See all 3.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Engine Cooling Fan Temperature Switch for Infiniti
Four Seasons Temperature Switch 37489 is a radiator-mount engine cooling fan temperature switch built for direct temperature control in the cooling system. It uses a rectangular female 2-terminal connector and meets or exceeds OEM requirements for the listed Infiniti applications.
Key Features
- Brand: Four Seasons Temperature Switch
- Part number: 37489
- Engine cooling fan temperature switch for radiator mount applications
- Rectangular connector shape with 2 terminals
- Female connector design
- System mount location
- Meets or exceeds OEM specifications
- Compatible with 1990-1992 Infiniti M30 and 1990-1992 Infiniti Q45
Product Details
Four Seasons 37489 is a temperature switch used in radiator-mounted cooling fan control systems. The switch monitors coolant temperature and signals the fan circuit when the cooling system reaches the specified operating threshold. This helps maintain proper engine temperature in vehicles such as the Infiniti M30 and Infiniti Q45 from 1990 through 1992. The Four Seasons Temperature Switch line focuses on replacement electrical and thermal control components for cooling-system service, and this part cross-references A03889 and SW4933 for the same application.
What It Helps Address
- Cooling fan not switching on at the correct temperature
- Fan cycling problems caused by a failed temperature switch
- Engine temperature control issues related to radiator-mounted switch failure
- Cooling system warning signs tied to inaccurate temperature signaling
- Replacement needs for a worn or electrically inconsistent fan switch
Installation Notes and Tips
Install 37489 at the radiator mount location specified for the vehicle application. Verify the connector shape, terminal count, and female terminal configuration before installation. Confirm the cooling system is properly serviced and the electrical connector is clean and secure before testing fan operation. For fitment, this part fits 1990-1992 Infiniti M30 and 1990-1992 Infiniti Q45, N/A.
Quality Assurance
Four Seasons lists this temperature switch as meeting or exceeding OEM requirements, making it a direct replacement option for the specified Infiniti cooling fan applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1992 | INFINITI | M30 | N/A | Temperature Switch |
| 1992 | INFINITI | Q45 | N/A | Temperature Switch |
| 1991 | INFINITI | M30 | N/A | Temperature Switch |
| 1991 | INFINITI | Q45 | N/A | Temperature Switch |
| 1990 | INFINITI | M30 | N/A | Temperature Switch |
| 1990 | INFINITI | Q45 | N/A | Temperature Switch |
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