Four Seasons 35743 HVAC Relay

HVAC Relay for OE-Style Climate Control Performance

Four Seasons Relay 35743 is a standard 12-volt HVAC relay built for dependable switching in automotive climate control circuits. With a 5-blade terminal layout, square female connector, and bracketed black housing, it is made to match common OE relay configurations for direct replacement service.

Compatible with select Dodge Dakota, Dodge Caravan, Dodge Grand Caravan, Chevrolet Monte Carlo, Buick Century, Buick Regal, Chevrolet El Camino, Oldsmobile Calais, Oldsmobile Cutlass Ciera, Pontiac Acadian, and Pontiac T1000 applications, this relay supports HVAC and related electrical functions where a standard 20-amp relay is specified.

Key Features

• Four Seasons Relay line standard relay for HVAC and electrical control circuits
• 12-volt relay with 20-amp amperage rating
• 5 blade terminals with female connector and male blade terminals
• Square connector shape with black housing, skirt, and bracket
• Meets or exceeds OEM requirements
• Direct replacement style for service on select Dodge Dakota and GM applications

Product Details

Four Seasons 35743 is a standard relay used in HVAC-related electrical systems where reliable on/off switching is required. The relay’s 5-pin blade design, square connector, and bracketed construction help it align with factory-style mounting and connection layouts. This part cross-references UAC RE4121C for the same application. Four Seasons 35743 is also listed among interchange references used across multiple aftermarket and OE-style replacement catalogs.

Common Issues This Relay May Address

• HVAC blower or control circuit not switching properly
• Intermittent relay operation in climate control circuits
• Electrical relay failure causing loss of fan or accessory function
• Heat-related relay wear in older vehicle electrical systems
• Replacement need for a 5-pin standard relay in OE-style applications

Installation Notes and Tips

Verify terminal count, connector shape, and amperage rating before installation. Confirm the vehicle uses a 12-volt, 5-blade standard relay with a square female connector and bracketed housing. Match the original relay location and wiring layout on the vehicle before replacing the part. This relay is listed for 2003 Dodge Dakota, 1992-1994 Dodge Caravan, 1992-1994 Dodge Grand Caravan, 1986-1988 Chevrolet Monte Carlo, 1986-1987 Buick Century, 1987 Buick Regal, 1986-1987 Chevrolet El Camino, 1987 Oldsmobile Calais, 1987 Oldsmobile Cutlass Ciera, 1986-1987 Pontiac Acadian, 1986-1987 Pontiac T1000, 1986 Buick Regal, 1986 Oldsmobile Cutlass Ciera, and 1985 Oldsmobile Cutlass Ciera.

Quality Assurance

Four Seasons identifies this relay as meeting or exceeding OEM specifications, supporting OE-style fit and electrical performance for the listed applications. The Relay product line is built for standard replacement use in automotive HVAC and relay circuits.