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Four Seasons 35944 Engine Cooling Fan Switch
| Brand | Four Seasons 35944 |
|---|---|
| Connector Color | White |
| Connector Gender | Male |
| Connector Shape | Round |
| Description | Switch-Temp /Engine Mount |
| Fan Open/Closed | Closed |
| Fitting Gender | Male |
| Fitting Thread Size | M16-1.50 |
| Meets / Exceeds OEM? | YES |
| Mnt Sys Loc | Engine Mounted |
| Style | Temperature |
| Temperature On | 212 |
| Terminal Quantity | 1 |
| Type | Cooling Fan |
| Product line | Temperature Switch |
| Fits | Toyota, Geo, Chevrolet, and BMW · 47 vehicles |
OE direct replacement. Meets or exceeds OEM requirements for dependable cooling control.
Temperature switch. Engine-mounted design responds at 212 degrees for fan control.
Round connector. White male connector with M16-1.50 threads for a secure fit.
Cross-references AMS Automotive 4917, AMS Automotive 4918 and Anchor 3424 for the same application. See all 25.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Engine Cooling Fan Switch for OE-Style Temperature Control
Four Seasons Temperature Switch 35944 is an engine-mounted cooling fan switch built for direct temperature-based fan control. It uses a white round male connector, a single terminal, and an M16-1.50 male thread for a straightforward OE-style replacement on supported Toyota, Chevrolet, BMW, and Geo applications.
With a fan open/closed setting of closed and a fan-on temperature of 212 degrees, this Four Seasons 35944 temperature switch helps restore proper coolant fan operation in vehicles such as Toyota Corolla, Toyota Camry, and Toyota Celica applications.
Key Features
- Four Seasons Temperature Switch line for engine cooling fan control
- Part number 35944 for direct reference and catalog lookup
- Engine mounted design with temperature-based operation
- White round male connector with 1 terminal
- M16-1.50 male thread for supported OE-style fitment
- Fan open/closed configuration: closed
- Temperature on point: 212 degrees
- Meets or exceeds OEM requirements
Product Details
This engine cooling fan switch is used to trigger radiator fan operation based on coolant temperature. The Four Seasons Temperature Switch product line focuses on temperature-actuated switching for cooling systems, and this 35944 unit follows that approach with an engine-mounted layout and OE-style electrical and threaded connections. It is listed for applications including 1984-1993 Toyota Corolla, 1987-1988 Toyota Camry, 1986-1987 Toyota Supra, 1991-1992 Toyota Celica, 1989-1992 Geo Prizm, and select BMW 325e, 325es, 325i, and 325is models.
This part cross-references FEL-PRO 35944 for the same application.
What It Helps Fix
- Cooling fan that does not switch on at the correct temperature
- Fan operation that is inconsistent or delayed
- Overheating caused by poor temperature-triggered fan control
- Faulty engine-mounted coolant fan switch performance
- Temperature switch replacement needs on supported Toyota Corolla, Camry, and Celica models
Installation Notes and Tips
Verify connector shape, terminal count, and M16-1.50 thread size before installation. Confirm the vehicle uses an engine-mounted temperature switch and check the application notes for model-specific details such as the 1990 Toyota Celica listing without connector and the BMW applications noted at 99 degrees C. Always compare the original switch location and connector style to the replacement part before service.
Quality Assurance
Four Seasons lists this temperature switch as meeting or exceeding OEM requirements, making it a direct-fit replacement option for supported cooling fan applications.
| Year | Make | Model | Submodel | Body Type | Drive Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | Toyota | Corolla | — | — | — | — | — | — | N/A | Temperature Switch |
| 1992 | Geo | Prizm | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1992 | Toyota | Celica | — | — | — | 1.6L | L4 | — | N/A | Temperature Switch |
| 1992 | Toyota | Corolla | — | — | FWD | — | — | — | N/A | Temperature Switch |
| 1991 | Geo | Prizm | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1991 | Toyota | Celica | — | — | — | 1.6L | L4 | — | N/A | Temperature Switch |
| 1991 | Toyota | Corolla | — | — | FWD | — | — | — | N/A | Temperature Switch |
| 1990 | Geo | Prizm | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1990 | Toyota | Celica | — | — | — | 1.6L | L4 | — | N/A | w/o Connector; Temperature Switch |
| 1990 | Toyota | Corolla | — | — | FWD | — | — | — | N/A | Temperature Switch |
| 1989 | Geo | Prizm | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1989 | Toyota | Corolla | — | — | FWD | — | — | — | N/A | Temperature Switch |
| 1988 | Chevrolet | Nova | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1988 | Toyota | Camry | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1988 | Toyota | Corolla | FX | — | — | — | — | — | N/A | Temperature Switch |
| 1988 | Toyota | Corolla | FX16 | — | — | — | — | — | N/A | Temperature Switch |
| 1988 | Toyota | Corolla | FX16 GTS | — | — | — | — | — | N/A | Temperature Switch |
| 1987 | BMW | 325e | — | — | — | — | — | — | N/A | 99 Deg. C; Temperature Switch |
| 1987 | BMW | 325es | — | — | — | — | — | — | N/A | 99 Deg. C; Temperature Switch |
| 1987 | BMW | 325i | — | — | — | — | — | — | N/A | 99 Deg. C; Temperature Switch |
| 1987 | BMW | 325is | — | — | — | — | — | — | N/A | 99 Deg. C; Temperature Switch |
| 1987 | Chevrolet | Nova | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1987 | Toyota | Camry | — | — | — | — | — | — | N/A | Temperature Switch |
| 1987 | Toyota | Camry | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1987 | Toyota | Celica | — | — | — | — | — | — | N/A | Temperature Switch |
| 1987 | Toyota | Corolla | FX | — | — | — | — | — | N/A | Temperature Switch |
| 1987 | Toyota | Corolla | FX16 | — | — | — | — | — | N/A | Temperature Switch |
| 1987 | Toyota | Corolla | FX16 GTS | — | — | — | — | — | N/A | Temperature Switch |
| 1987 | Toyota | Supra | — | — | — | — | — | — | N/A | Temperature Switch |
| 1986 | BMW | 325e | — | — | — | — | — | — | N/A | 99 Deg. C; Temperature Switch |
| 1986 | BMW | 325es | — | — | — | — | — | — | N/A | 99 Deg. C; Temperature Switch |
| 1986 | Chevrolet | Nova | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1986 | Toyota | Camry | — | — | — | 2.0L | L4 | GAS | N/A | Temperature Switch |
| 1986 | Toyota | Celica | — | — | — | — | — | — | N/A | Temperature Switch |
| 1986 | Toyota | Corolla | — | Sedan | FWD | 1.6L | L4 | — | N/A | Temperature Switch |
| 1986 | Toyota | Corolla | — | Hatchback | FWD | 1.6L | L4 | — | N/A | Temperature Switch |
| 1986 | Toyota | Supra | — | — | — | — | — | — | N/A | Temperature Switch |
| 1985 | Chevrolet | Nova | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Toyota | Camry | — | — | — | 2.0L | L4 | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1985 | Toyota | Corolla | — | — | — | 1.6L | L4 | — | N/A | Temperature Switch |
| 1984 | Toyota | Camry | — | — | — | 2.0L | L4 | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1984 | Toyota | Corolla | — | — | — | 1.6L | L4 | — | N/A | Temperature Switch |
| 1983 | Toyota | Camry | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1982 | Toyota | Tercel | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1981 | Toyota | Tercel | — | — | — | — | — | — | N/A | Engine mounted coolant fan switch; Temperature Switch |
| 1979 | Chevrolet | Monza | — | — | — | 3.8L | V6 | — | N/A | Temperature Switch |
| 1979 | Chevrolet | Monza | — | — | — | 3.2L | V6 | — | N/A | Temperature Switch |
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