Four Seasons
Temperature Switch

Four Seasons 35809 A/C Clutch Cycle Switch

Brand Four Seasons 35809
Activation Control Preset
Cap Tube Lgth IN 8
Cap Tube Lgth MM 203.200
Color Metal
Connector Shape Open Blade
Description Switch-Temp /System Mount
Material Metal
Meets / Exceeds OEM? YES
Mnt Sys Loc System Mount
Number of Terminals 2
Style Cycling
Temperature Off 25
Temperature On 45
Type Temperature
Voltage 12
Weather Pack? No
Product line Temperature Switch
Fits Chrysler, Dodge, and Plymouth · 41 vehicles

OE direct replacement. Meets OEM specs for a straightforward swap.

Preset cycling switch. Automatically controls compressor cycling by temperature.

Metal construction. Durable body with an open-blade 2-terminal connector.

Cross-references DENSO Auto Parts 5020, FEL-PRO 35809 and Gates 22801 for the same application. See all 24.

$46.28Free shipping
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Four Seasons 35809 Temperature Switch Overview

The Four Seasons Temperature Switch, part number 35809, is a preset A/C clutch cycle switch built for 12-volt HVAC systems. It uses a metal body, open blade connector, and 2-terminal layout to help control compressor cycling based on temperature thresholds.

Compatible with select Chrysler, Dodge, and Plymouth applications, including Chrysler Town & Country, Dodge Caravan, and Plymouth Voyager models from the mid-1980s, this switch is a direct-fit style service part for system-mounted temperature control.

Key Features

  • Preset activation control for temperature-based A/C clutch cycling
  • System mount design with 8 in. cap tube length
  • Metal construction with metal color finish
  • Open blade connector shape with 2 terminals
  • 12-volt electrical specification
  • Meets or exceeds OEM requirements
  • Temperature off at 25 and temperature on at 45

Product Details

Four Seasons 35809 is a temperature switch in the Temperature Switch product line, made for HVAC systems that rely on cycling control to regulate compressor operation. The system-mount design and cap tube configuration support temperature sensing at the intended location, while the preset switching points help maintain consistent A/C clutch engagement and disengagement. This part cross-references DENSO Auto Parts 5020 for the same application.

Fits 1985-1987 Chrysler Town & Country, N/A; Fits 1985-1987 Dodge Caravan, N/A; Fits 1987 Dodge Grand Caravan, N/A; Fits 1987 Plymouth Grand Voyager, N/A; Fits 1985-1987 Plymouth Voyager, N/A; Fits 1985-1986 Dodge D100, N/A; Fits 1985-1986 Dodge D150, N/A; Fits 1985-1986 Dodge D250, N/A; Fits 1985-1986 Dodge D350, N/A; Fits 1985-1986 Dodge Ramcharger, N/A; Fits 1985-1986 Dodge W100, N/A; Fits 1985-1986 Dodge W150, N/A; Fits 1985-1986 Dodge W250, N/A; Fits 1985-1986 Dodge W350, N/A; Fits 1985 Chrysler New Yorker, N/A; Fits 1985 Dodge 600, N/A; Fits 1985 Dodge Aries, N/A; Fits 1985 Dodge B150, N/A; Fits 1985 Dodge B250, N/A; Fits 1985 Dodge B350, N/A; Fits 1985 Plymouth Turismo, N/A; Fits 1985 Plymouth Turismo 2.2, N/A.

What It Helps Address

  • Intermittent A/C compressor cycling
  • Temperature switch failure in system-mounted HVAC controls
  • Incorrect clutch engagement timing
  • Loss of stable cabin cooling performance
  • Electrical connection issues at the switch interface

Installation Notes and Tips

Verify the original switch style, connector shape, terminal count, and cap tube length before installation. Confirm the vehicle uses a system-mounted temperature switch and match the preset temperature range to the original application. For best results, inspect the HVAC wiring and connector condition during replacement.

Quality Assurance

Four Seasons lists this part as meeting or exceeding OEM requirements, making it a service replacement built to match the original application standard for select Chrysler, Dodge, and Plymouth vehicles.

This part fits 41 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1987ChryslerTown & CountryN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1987DodgeCaravanN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1987DodgeGrand CaravanN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1987PlymouthGrand VoyagerN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1987PlymouthReliantN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1987PlymouthVoyagerN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986ChryslerTown & CountryN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeCaravanN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeD100N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeD150N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeD250N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeD350N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeRamchargerN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeW100N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeW150N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeW250N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986DodgeW350N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986PlymouthReliantN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1986PlymouthVoyagerN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985ChryslerNew YorkerN/ATemperature Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985ChryslerTown & CountryN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985Dodge600N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeAriesN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeB1505.2LV8N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeB2505.2LV8N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeB2505.9LV8N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeB350N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeCaravanN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeD100N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeD150N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeD250N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeD350N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeRamchargerN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeW100N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeW150N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeW250N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985DodgeW350N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985PlymouthReliantN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985PlymouthTurismoN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985PlymouthTurismo 2.2N/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
1985PlymouthVoyagerN/ATemperature Switch; Mechanical Switch; Old Part, Exhaust Stock and Reorder.; Temperature Switch
Directly replaces or cross-references 24 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
DENSO Auto Parts — 5020FEL-PRO — 35809Gates — 22801UAC — SW3123C270952709635809Z207523262048301687014787881551076171127432209054339411433946344193601113580919189351A8384E807014MT0624SW3123SW3129