Four Seasons 36514 Engine Cooling Fan Switch

Engine Cooling Fan Switch for OE-Style Temperature Control

Four Seasons 36514 is an engine-mounted temperature switch for cooling fan control. It uses a 2-terminal male connector with a red open connector shape and an M14 x 1.50 fitting thread size for direct replacement applications that call for this style of temperature switch.

Built to meet or exceed OEM requirements, this Four Seasons Temperature Switch line part helps manage fan operation based on coolant temperature. It is a practical replacement for BMW and Volkswagen applications that need a temperature-on point of 215 and a temperature-off point of 206.

Key Features

• Four Seasons Temperature Switch line, part number 36514
• Engine cooling fan switch with engine-mounted installation
• 2-terminal male connector with red open connector design
• M14 x 1.50 fitting thread size
• Temperature on at 215 and temperature off at 206
• Meets or exceeds OEM specifications
• Direct replacement style for temperature-based fan control

Product Details

This cooling fan switch is designed for vehicles that rely on an engine-mounted coolant temperature signal to trigger fan operation. Four Seasons 36514 is listed for applications including 2003 Volkswagen Golf and multiple BMW models such as 318i, 325i, 325is, 325iX, M3, 528e, 535i, 735i, and 528i. If you are searching for a BMW 325i cooling fan temperature switch or a Volkswagen Golf engine cooling fan switch, this part number is a direct reference point.

This part cross-references Karlyn 50234 for the same application. The Four Seasons 36514 part number also appears in interchange listings for several OE and aftermarket references, making it easier to match the correct engine cooling fan switch for the vehicle and temperature range.

Common Problems This Part Can Address

• Cooling fan not switching on at the correct coolant temperature
• Cooling fan staying on longer than expected after warm-up
• Intermittent fan operation caused by a worn temperature switch
• Incorrect temperature signal at the engine-mounted switch location
• Replacement need for a failed BMW or Volkswagen fan temperature switch

Installation Notes and Tips

Verify the connector style, terminal count, thread size, and temperature range before installation. This switch uses a male connector and an engine-mounted fitting, so the replacement should match the original sensor location and electrical connection exactly. Confirm the vehicle application against the listed fitment for BMW 318i, 318is, 325i, 325is, 325iX, M3, 325e, 325es, 528e, 528i, 533i, 535i, 524td, 635CSi, 735i, and Volkswagen Golf.

For best results, compare the original switch markings and connector layout before replacing the part. Four Seasons 36514 is a direct-fit style temperature switch for the specified applications, including 2003 Volkswagen Golf and the listed BMW models.

Quality Assurance

Four Seasons identifies this temperature switch as meeting or exceeding OEM requirements, supporting consistent cooling fan control in the specified applications. The Temperature Switch product line is built for replacement use where accurate engine-mounted temperature activation is required.