Four Seasons 35903 Engine Cooling Fan Motor Relay

Engine Cooling Fan Relay for OE-Style Control

Four Seasons Relay 35903 is a standard 12-volt engine cooling fan motor relay built for reliable electrical switching in the cooling system. It uses a 4-terminal blade design with a female connector, male terminals, a rectangular connector shape, and a black housing with bracket and skirt for a direct-fit style replacement.

Compatible With 1983-1984 Buick Skyhawk, 1983-1984 Cadillac Cimarron, 1983-1984 Chevrolet Cavalier, 1983-1984 Oldsmobile Firenza, and 1983-1984 Pontiac J2000 and J2000 Sunbird applications with air conditioning where noted.

Key Features

• Four Seasons Relay brand line standard relay
• Part number 35903 for engine cooling fan motor relay service
• 12-volt electrical rating
• 30-amp amperage rating
• 4 blade terminals with female connector and male terminals
• Rectangular connector shape with black housing
• Bracket and skirt included in the relay design
• Meets or exceeds OEM requirements

Product Details

Four Seasons 35903 is an OE-style engine cooling fan motor relay used to control fan circuit operation in vehicles that rely on relay-triggered cooling fan switching. The standard relay construction, 12V rating, and 30A capacity make it a practical replacement for aging or failed cooling fan relays in compact GM applications from the early 1980s. This part cross-references Hayden 2597 for the same application.

The Four Seasons Relay line focuses on electrical replacement components built to match common factory relay formats. For buyers searching for a cooling fan relay for 1983-1984 Buick Skyhawk, Chevrolet Cavalier, or Pontiac J2000 Sunbird, part number 35903 provides a direct reference point for fitment and electrical configuration.

Common Problems This Relay Can Address

• Cooling fan does not switch on when the engine reaches operating temperature
• Intermittent fan operation caused by a worn relay contact
• Electrical relay failure in the fan control circuit
• Overheating concerns related to a non-functioning cooling fan relay
• Replacement need after corrosion or heat damage at the relay terminals

Installation Notes and Tips

Verify the relay connector style, terminal count, and amperage rating before installation. Confirm vehicle application by year, make, model, and cooling system configuration, especially on 1983-1984 Buick Skyhawk, Chevrolet Cavalier, and Pontiac J2000/J2000 Sunbird models with air conditioning. Inspect the relay socket and terminals for heat damage, looseness, or corrosion before installing the replacement relay.

Quality Assurance

Four Seasons 35903 is listed as meeting or exceeding OEM requirements, making it a specification-based replacement for factory-style cooling fan relay service.