Four Seasons 35930 Engine Cooling Fan Switch

Engine Cooling Fan Switch for OE-Style Temperature Control

Four Seasons 35930 is an engine-mounted temperature switch for cooling fan control. It uses a brass body with a round black male connector and a single terminal, with fan operation set to open at 220 and close at 230.

Key Features

• Engine-mounted temperature switch for cooling fan operation
• Brass construction for durable sensor housing
• Round black connector with male terminal design
• 1-terminal configuration
• 3/8" pipe thread size, 43/64" x 18
• Fan open/closed calibration: 220/230
• Meets or exceeds OEM requirements

Product Details

The Four Seasons Temperature Switch line focuses on direct-fit thermal control components for engine cooling systems. Part number 35930 is a temperature switch style cooling fan switch designed for engine-mounted applications, helping trigger fan operation at the specified temperature range. This part cross-references Gates 22759 for the same application. It is listed for a wide range of GM vehicles, including Cadillac Brougham, Chevrolet Camaro, and Pontiac Firebird applications, as well as other Buick, Oldsmobile, and Chevrolet models from 1980 through 1992.

Compatible vehicle examples include Fits 1987-1992 Cadillac Brougham, N/A; Fits 1983-1991 Chevrolet Camaro, N/A; and Fits 1988-1992 Pontiac Firebird, N/A. Additional coverage includes Fits 1986-1988 Buick Century, N/A and Fits 1986-1988 Oldsmobile Delta 88, N/A. Four Seasons 35930 is built for applications that use a 3/8" pipe thread and a single-terminal engine-mounted temperature switch layout.

Common Uses

• Cooling fan does not switch on at the correct temperature
• Cooling fan cycles at the wrong temperature range
• Engine temperature control concerns tied to a failed thermal switch
• Replacement for worn or corroded engine-mounted fan switch connections
• Service repair on GM cooling fan temperature switch applications

Installation Notes and Tips

Verify the connector shape, terminal count, thread size, and temperature calibration before installation. This part uses a male connector, round black plug, and engine-mounted location, so matching the original sensor style is important for proper fitment. Confirm the vehicle application against the listed fitment data, especially on Cadillac, Chevrolet Camaro, and Pontiac Firebird models.

Quality Assurance

Four Seasons 35930 meets or exceeds OEM requirements for the listed applications. The part number is also referenced by multiple aftermarket catalogs, including FEL-PRO 35930 and DENSO Auto Parts 5092.