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Four Seasons 37309 Engine Cooling Fan Switch
Engine Cooling Fan Switch for Honda Prelude
The Four Seasons Temperature Switch 37309 is an engine-mounted coolant fan switch built for precise fan control in select Honda Prelude applications. It uses a round, 2-terminal male connector and an M16-1.50 fitting thread size for direct replacement service on the cooling system.
Compatible With 1993-2001 Honda Prelude applications, this temperature switch is specified with a fan open/closed operating range of 194°F off and 203°F on. The Four Seasons Temperature Switch line focuses on temperature-based cooling control components for engine-mounted locations.
Key Features
- Four Seasons part number 37309
- Engine-mounted coolant fan switch
- Round connector with 2 terminals
- Male connector and male fitting
- M16-1.50 thread size
- Fan open/closed temperature range: 194°F off, 203°F on
- Meets or exceeds OEM requirements
Product Details
This temperature switch is used to trigger the engine cooling fan based on coolant temperature, helping maintain proper operating temperature in the radiator and cooling circuit. It is listed for 1993-1996 Honda Prelude and 1997-2001 Honda Prelude, with engine-mounted coolant fan switch fitment. If you are replacing a worn Honda Prelude cooling fan switch, Four Seasons 37309 provides the specified temperature activation points and connector style for the application.
This part cross-references A77312 for the same application.
Common Issues It Can Address
- Cooling fan not switching on at the correct temperature
- Cooling fan staying on longer than expected
- Temperature-related fan control faults
- Overheating caused by delayed fan activation
- Intermittent engine-mounted fan switch operation
Installation Notes and Tips
Verify the connector shape, terminal count, and M16-1.50 thread size before installation. Confirm the replacement switch matches the engine-mounted location and the specified 194°F off / 203°F on operating range for your Honda Prelude. Inspect the connector and surrounding cooling system components for corrosion or damage during service.
Quality Assurance
Four Seasons lists this temperature switch as meeting or exceeding OEM requirements for the specified application.
| Brand | Four Seasons |
|---|---|
| Part Number | 37309 |
| Position | Temperature Switch |
| Connector Gender | Male |
| Connector Shape | Round |
| Description | Switch-Temp /Engine Mount |
| Fan Open/Closed | Open |
| Fitting Gender | Male |
| Fitting Thread Size | M16-1.50 |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | Engine Mounted |
| Style | Temperature |
| Temperature Off | 194 |
| Temperature On | 203 |
| Terminal Quantity | 2 |
| Type | Cooling Fan |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2001 | Honda | Prelude | N/A | Engine mounted coolant fan switch; Temperature Switch | |
| 2000 | Honda | Prelude | N/A | Engine mounted coolant fan switch; Temperature Switch | |
| 1999 | Honda | Prelude | N/A | Engine mounted coolant fan switch; Temperature Switch | |
| 1998 | Honda | Prelude | N/A | Engine mounted coolant fan switch; Temperature Switch | |
| 1997 | Honda | Prelude | N/A | Engine mounted coolant fan switch; Temperature Switch | |
| 1996 | Honda | Prelude | VTEC | N/A | Temperature Switch |
| 1995 | Honda | Prelude | VTEC | N/A | Temperature Switch |
| 1994 | Honda | Prelude | VTEC | N/A | Temperature Switch |
| 1993 | Honda | Prelude | VTEC | N/A | Temperature Switch |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.