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Four Seasons 35942 Engine Cooling Fan Switch
| Brand | Four Seasons 35942 |
|---|---|
| Connector Shape | Open |
| Terminal Quantity | 1 |
| Connector Gender | Male |
| Description | Switch-temp /engine mount |
| Fan Open/Closed | Open |
| Fitting Gender | Male |
| Fitting Thread Size | M16-1.50 |
| Material | Brass |
| Meets / Exceeds OEM? | Yes |
| Mnt Sys Loc | Engine mounted |
| Style | Temperature |
| Temperature Off | 206 |
| Temperature On | 215 |
| Type | Cooling fan |
| Product line | Temperature Switch |
| Fits | Subaru · 3 vehicles |
OE direct replacement. Engine-mounted temperature switch with brass construction and an open connector.
Brass construction. Provides durable, corrosion-resistant performance in a cooling fan switch.
Temperature switch. Turns on at 215 and off at 206 for precise fan control.
Cross-references AMS Automotive 4919, Anchor 3417 and FEL-PRO 35942 for the same application. See all 22.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Engine Cooling Fan Switch for Subaru Standard
The Four Seasons Temperature Switch 35942 is an engine-mounted cooling fan switch built with a brass body and an M16-1.50 male thread. It is specified for 1977-1979 Subaru Standard applications and uses a single-terminal, open connector design for temperature-based fan control.
Four Seasons Temperature Switch line components are focused on direct-fit thermal control for cooling system service. Part number 35942 is an OE-style replacement that meets or exceeds OEM requirements and is intended for engine-mounted fan switch applications.
- Engine-mounted cooling fan switch
- Brass construction
- Male connector and male fitting
- Open connector shape
- M16-1.50 thread size
- Temperature on at 215 degrees, off at 206 degrees
- Meets or exceeds OEM requirements
This temperature switch monitors coolant temperature and signals the cooling fan circuit when the engine reaches the specified operating range. It is a direct replacement for Subaru Standard cooling fan switch service and is also referenced by cross numbers such as Gates 51764 and Anchor 3417 for the same application. Use Four Seasons 35942 when replacing a worn or inaccurate engine cooling fan switch on 1977-1979 Subaru Standard models.
Common Problems It Can Address
- Cooling fan not switching on at the correct temperature
- Cooling fan staying on longer than expected
- Erratic fan cycling caused by a failing temperature switch
- Overheating concerns related to delayed fan activation
- Temperature control issues in engine-mounted fan circuits
Installation Notes and Tips
Verify the connector style, terminal count, thread size, and temperature range before installation. This switch uses a male M16-1.50 fitting and a single terminal, so matching the original sensor port and electrical connection is important for proper operation. Confirm the cooling system is filled and functioning correctly before testing fan engagement.
Quality Assurance
Four Seasons 35942 is built to meet or exceed OEM specifications for temperature-switch service. Its brass construction and OE-style fitment support reliable replacement in the cooling system.
Compatible with 1977-1979 Subaru Standard, engine mounted. Part number 35942.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1979 | Subaru | Standard | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1978 | Subaru | Standard | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1977 | Subaru | Standard | N/A | Engine mounted coolant fan switch; Temperature Switch |
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