Four Seasons
Rad Fan Controller

Four Seasons 35988 A/C Compressor Cut-Out Relay

Brand Four Seasons 35988
Amperage Rating 30
Bracket? w/o Bracket
Description Relays
Meets / Exceeds OEM? Yes
Skirt? Yes
Style Radiator Fan Controller
Terminal Gender Male
Terminal Quantity 5
Terminal Type Blade
Type Radiator Fan Controller
Voltage 12
Product line Rad Fan Controller
Fits Ford, Mercury, and Lincoln · 126 vehicles

OE direct replacement. Meets OEM requirements for dependable relay operation.

Radiator fan controller. Helps manage cooling-system fan operation with 12-volt control.

Blade terminals. Five male terminals simplify a secure electrical connection.

Cross-references Bosch 16090, Bosch 16134 and Dorman - HELP 47018 for the same application. See all 83.

$29.92Free shipping
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Four Seasons 35988 Rad Fan Controller

Four Seasons 35988 is a 12-volt radiator fan controller relay built for vehicles that rely on accurate cooling fan and A/C cut-off control. It uses a 5-blade male terminal layout, a 30-amp amperage rating, and a skirted design with no bracket for direct relay replacement in supported applications.

The Four Seasons Rad Fan Controller line focuses on OE-style relay control for cooling-system and compressor-related circuits. This part meets or exceeds OEM requirements and is listed for long-tail searches such as Ford Escort radiator fan relay replacement, Mercury Topaz A/C compressor cut-off relay, and Ford Ranger cooling fan controller.

Key Features

  • Part number: 35988
  • Brand line: Rad Fan Controller
  • Type: radiator fan controller / relay
  • 12-volt electrical system
  • 30-amp amperage rating
  • 5 blade male terminals
  • Skirted design, without bracket
  • Meets or exceeds OEM specifications

Detailed Description

This Four Seasons relay is used in applications where the radiator fan circuit, compressor clutch cut-off circuit, or related engine cooling fan control needs a direct replacement. It is listed across multiple Ford, Mercury, Lincoln, and Jeep applications, including Ford Escort, Ford Ranger, Mercury Topaz, and Ford Cougar, making it a practical search match for buyers looking for a radiator fan controller relay by part number 35988.

This part cross-references Bosch 16090 and Dorman - HELP 47018 for the same application.

What It Helps Fix

  • Cooling fan relay failure that prevents the radiator fan from switching on
  • A/C compressor cut-off relay faults in supported Ford and Mercury applications
  • Intermittent fan operation caused by worn relay contacts
  • Engine cooling control issues tied to the fan motor relay circuit
  • Electrical relay replacement needs in 12-volt HVAC and cooling systems

Installation Notes and Fitment

Compatible With 1985-1990 Ford Escort, N/A; 1986-1989 Ford Ranger, N/A; 1990-1992 Ford Ranger, N/A; 1990-1994 Ford Cougar, N/A; 1987-1988 Ford Cougar, N/A; 1987-1994 Mercury Cougar, N/A; 1988-1994 Ford Tempo, N/A; 1988-1994 Mercury Topaz, N/A; 1991-1996 Ford Escort, N/A; and 1991-1996 Mercury Tracer, N/A. Additional listed applications include Ford Aerostar, Ford Thunderbird, Ford Bronco II, Ford Mustang, Lincoln Mark VII, Lincoln Mark VIII, Mercury Colony Park, Mercury Grand Marquis, Mercury Lynx, Ford LTD Crown Victoria, Ford Explorer, and Jeep Comanche.

Verify terminal style, terminal count, and relay location before installation. This 5-terminal blade relay is specified without a bracket and with a skirted housing, so matching the original connector and mounting style is important for proper fitment.

Quality Assurance

Four Seasons identifies this relay as meeting or exceeding OEM requirements, supporting dependable replacement in approved cooling and A/C control applications. The 35988 part number is also listed among multiple interchange references for catalog matching and application verification.

This part fits 126 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
1996FordEscortN/ACompressor Clutch Cut-Out Relay; Throttle Cut Off; Rad Fan Controller
1996MercuryTracerN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1995FordEscortN/ACompressor Clutch Cut-Out Relay; Throttle Cut Off; Rad Fan Controller
1995MercuryTracerN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1994FordAerostar3.0LV6N/AAuxiliary; Rad Fan Controller
1994FordCougarN/ARad Fan Controller
1994FordCougarN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Relay
1994FordEscortN/ACompressor Clutch Cut-Out Relay; Throttle Cut Off; Rad Fan Controller
1994FordTempoN/AFits vehicles with air conditioning systems.; Relay
1994MercuryCougarN/ARad Fan Controller
1994MercuryCougarN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Relay
1994MercuryTopaz2.3LL4N/AFits vehicles with air conditioning systems.; Relay
1994MercuryTracerN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1993FordAerostar3.0LV6N/AAuxiliary; Rad Fan Controller
1993FordCougarN/ARad Fan Controller
1993FordEscortN/ACompressor Clutch Cut-Out Relay; Throttle Cut Off; Rad Fan Controller
1993FordTempoN/AFits vehicles with air conditioning systems.; Relay
1993LincolnMark VIIIN/ARelay; Rad Fan Controller
1993MercuryCougarN/ARad Fan Controller
1993MercuryTopazN/AFits vehicles with air conditioning systems.; Relay
1993MercuryTracerN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1992FordCougarN/ARad Fan Controller
1992FordEscortN/ACompressor Clutch Cut-Out Relay; Throttle Cut Off; Rad Fan Controller
1992FordExplorerN/ANew Part
1992FordRangerN/ANew Part
1992FordTempoN/AFits vehicles with air conditioning systems.; Relay
1992FordThunderbird5.0LV8N/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1992FordThunderbird3.8LV6N/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1992JeepComancheN/ANew Part
1992LincolnMark VIIN/ARelay; Rad Fan Controller
1992MercuryCougarN/ARad Fan Controller
1992MercuryTopazN/AFits vehicles with air conditioning systems.; Relay
1992MercuryTracerN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1991FordAerostarN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1991FordCougarN/ARad Fan Controller
1991FordEscortN/ACompressor Clutch Cut-Out Relay; Throttle Cut Off; Rad Fan Controller
1991FordExplorerN/ANew Part
1991FordLTD Crown Victoria5.0LV8N/ARad Fan Controller
1991FordRangerN/ANew Part
1991FordTempoN/AFits vehicles with air conditioning systems.; Relay
1991FordThunderbird5.0LV8N/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1991FordThunderbird3.8LV6N/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1991JeepComancheN/ANew Part
1991LincolnMark VIIN/ARad Fan Controller
1991MercuryColony ParkN/ARectangular Relay; Rad Fan Controller
1991MercuryCougarN/ARad Fan Controller
1991MercuryGrand MarquisN/ARectangular Relay; Rad Fan Controller
1991MercuryTopazN/AFits vehicles with air conditioning systems.; Relay
1991MercuryTracerN/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1990FordAerostarN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1990FordBronco IIN/ANew Part
1990FordCougarN/ARad Fan Controller
1990FordEscortN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1990FordLTD Crown Victoria5.0LV8N/ARad Fan Controller
1990FordMustangN/ARad Fan Controller
1990FordMustang5.0LV8N/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Relay
1990FordRangerN/ANew Part
1990FordTempoN/AFits vehicles with air conditioning systems.; Relay
1990FordThunderbird3.8LV6N/AA/C Compressor Cut-Out Relay for Engine Cooling Fan Motor Relay.; Rad Fan Controller
1990FordThunderbird3.8LV6N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1990LincolnMark VIIN/ANew Part
1990MercuryColony ParkN/ARectangular Relay; Rad Fan Controller
1990MercuryColony ParkN/ARad Fan Controller
1990MercuryCougarN/ARad Fan Controller
1990MercuryGrand MarquisN/ARectangular Relay; Rad Fan Controller
1990MercuryGrand MarquisN/ARad Fan Controller
1990MercuryTopazN/AFits vehicles with air conditioning systems.; Relay
1989FordAerostarN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1989FordBronco IIN/ANew Part
1989FordEscortN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1989FordRangerN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1989FordTempoN/AFits vehicles with air conditioning systems.; Relay
1989FordThunderbird3.8LV6N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1989MercuryCougarN/ARad Fan Controller
1989MercuryTopazN/AFits vehicles with air conditioning systems.; Relay
1988FordAerostarN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1988FordBronco IIN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1988FordCougarN/ARad Fan Controller
1988FordEscortN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1988FordRangerN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1988FordTempoN/AFits vehicles with air conditioning systems.; Relay
1988FordThunderbirdN/ARad Fan Controller
1988MercuryCougarN/ARad Fan Controller
1988MercuryTopazN/AFits vehicles with air conditioning systems.; Relay
1987FordAerostarN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1987FordBronco IIN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1987FordCougarN/ARad Fan Controller
1987FordEscortN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1987FordRangerN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1987FordThunderbirdN/ARad Fan Controller
1987MercuryCougarN/ARad Fan Controller
1987MercuryLynxN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1987MercuryTopazN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1986FordAerostarN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1986FordBronco IIN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1986FordCougar3.8LV6N/ANew Part
1986FordEscortN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1986FordRangerN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1986FordThunderbirdN/ARad Fan Controller
1986MercuryCougar2.3LL4N/ANew Part
1986MercuryLynxN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1986MercuryTopaz2.3LL4N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1985FordBronco IIN/AA/C Compressor Relay; Throttle Cut Off; Rad Fan Controller
1985FordEscort1.6LL4N/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1985FordEscort1.9LL4N/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1985FordRangerN/ARad Fan Controller
1985FordThunderbirdN/ARad Fan Controller
1985MercuryLynxN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1985MercuryTopazN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1984FordEscort1.6LL4N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1984MercuryLynxAutomatic2.0LL4N/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1984MercuryLynxManual2.0LL4N/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1984MercuryLynxAutomatic1.6LL4N/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1984MercuryLynxManual1.6LL4N/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1984MercuryTopaz2.0LL4N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1984MercuryTopaz2.3LL4N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1983FordEscortN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1983FordMustang5.0LV8N/ANew Part
1983MercuryLN71.6LL4N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1983MercuryLynxN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1982FordEscortN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1982FordMustang5.0LV8N/ANew Part
1982MercuryLN7N/AFits vehicles with air conditioning systems.; Rad Fan Controller
1982MercuryLynxN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
1981FordEscortN/AFits vehicles with air conditioning systems.; Rad Fan Controller
1981MercuryLynxN/ARadiator Fan Motor Relay; w/o AC; Rad Fan Controller
Directly replaces or cross-references 83 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 16090Bosch — 16134Dorman - HELP — 47018FEL-PRO — 36018FEL-PRO — 36094Four Seasons — 35988Gates — 6894Gates — 19840Gates — 19911Gates — 33932OSC — 4723257347013155926155992156499208794208818244302244318601685601687014782960147843015500521581027171165711135988V11136018111360941918944319189468889996178899961988999690AC8206AC8209DY438DY468DY555DY864E1UZ13A435AE1VZ9345AE1VZ9345BE3AZ9C392AE3AZ13A025AE3AZ13A025BE3FZ9345BE3FZ9345DE3FZ9345EE3SZ11433AE3TZ13A025AE3TZ9345AE3UZ13A025AAE4LY11433AE4TZ9C392AE4TZ9C392BE4ZZ9C392AE5LY19A367AE6DZ11433AE6FZ11433AE6LZ9345AE6SZ11433AE6TZ13A025AE6VY11433AE7LY9C392AE7TZ9C392BE43Z11433AE53Z11433AE63Z13A025AE73Z82658AE83Z11433AE807520F8PZ14N135AAF8PZ14N135DAF19Z9345AHS302MT0964MT1261RE1006RE4472RE4473RE4888