Four Seasons 35749 A/C Compressor Cut-Out Relay

Four Seasons Relay 35749 A/C Compressor Cut-Off Relay

The Four Seasons Relay 35749 is a standard 12-volt A/C compressor cut-off relay built for HVAC control circuits that need reliable switching performance. With a 4-terminal blade design, rectangular female connector, and included bracket and skirt, it matches common OE-style relay layouts used in select GM compact cars and related applications.

Key Features

• 12-volt standard relay for HVAC and A/C compressor control
• 4 blade terminals with a female rectangular connector
• 30 amp amperage rating for relay circuit switching
• Includes bracket and skirt for OE-style mounting and fit
• White housing with standard relay construction
• Meets or exceeds OEM requirements

Product Details

Four Seasons Relay line components are built for direct electrical control in automotive HVAC systems, and part number 35749 follows that approach with a standard relay format for A/C compressor cut-off use. This relay is commonly referenced for vehicles such as the 1980-1981 Pontiac Phoenix, 1980-1981 Chevrolet Citation, 1980-1981 Oldsmobile Omega, 1980-1981 Buick Skylark, 1982 Buick Skyhawk, 1982 Cadillac Cimarron, 1982 Chevrolet Cavalier, 1982 Oldsmobile Firenza, 1982 Pontiac J2000, 1985 Chevrolet Cavalier, and 1987 Oldsmobile Cutlass Ciera. This part cross-references DENSO Auto Parts 4710 and Gates 6891 for the same application.

What This Relay Helps Fix

• A/C compressor that does not engage when the HVAC system calls for cooling
• Intermittent compressor operation caused by relay contact wear
• Electrical switching problems in the compressor cut-off circuit
• HVAC blower or compressor control issues tied to a failed relay
• Relay-related no-cool complaints on select 1980s GM vehicles

Installation Notes and Tips

Verify the terminal count, connector shape, and mounting style against the original relay before installation. This 4-terminal HVAC wiring relay is used in A/C compressor control circuits, so confirm the vehicle’s wiring layout and relay location before replacement. For fitment, this relay is listed for 1980-1981 Pontiac Phoenix, 1980-1981 Chevrolet Citation, 1980-1981 Oldsmobile Omega, 1980-1981 Buick Skylark, 1982 Buick Skyhawk, 1982 Cadillac Cimarron, 1982 Chevrolet Cavalier, 1982 Oldsmobile Firenza, 1982 Pontiac J2000, 1985 Chevrolet Cavalier, 1985 Oldsmobile Firenza, 1985 Pontiac J2000 Sunbird, 1985 Cadillac Cimarron, 1985 Buick Skyhawk, 1986 Buick Skyhawk, and 1987 Oldsmobile Cutlass Ciera.

Quality Assurance

Four Seasons lists this relay as meeting or exceeding OEM requirements, making it a direct-fit electrical replacement for the specified HVAC applications. The standard relay design supports consistent A/C compressor cut-off operation in compatible GM compact car platforms.