Four Seasons 58777 A/C Compressor

Overview of Four Seasons New Compressor 58777

The Four Seasons New Compressor 58777 is designed for reliable air conditioning performance in select GM vehicles. Engineered to work with R134a refrigerant, this A/C compressor supports efficient cooling for Buick, Chevrolet, Oldsmobile, and Pontiac models.

• Compatible with R134a refrigerant and PAG 150 oil
• Includes oil-filled compressor and clutch assembly
• Pressure switch type with high-pressure switch included
• 6-groove serpentine pulley with 4.5-inch diameter
• Ear mount installation with pin-type electrical terminal
• V5 compressor type with 12V coil voltage
• O-ring and sealing washer discharge and suction ports
• Clutch maximum diameter of 4.5 inches included

Four Seasons New Compressor Product Line Details

The New Compressor line from Four Seasons focuses on delivering new, direct replacement A/C compressors that meet original equipment specifications. This product line emphasizes compatibility with factory refrigerants and oils, ensuring proper system function and longevity. The 58777 model is part of this line, providing a complete compressor and clutch assembly designed for GM vehicles requiring a V5 compressor type and serpentine belt drive.

Technical Description and Features

The Four Seasons 58777 A/C compressor is a new, oil-filled unit compatible with R134a refrigerant and PAG 150 oil, which helps maintain optimal lubrication and cooling system efficiency. It features a pressure switch type with a high-pressure switch included to protect the system from overpressure conditions. The compressor uses a 6-groove serpentine pulley with a 4.5-inch diameter, designed for smooth belt engagement and reliable operation. The ear mount installation and pin-type terminal simplify mounting and electrical connections. Both discharge and suction ports utilize O-ring and sealing washer fittings to ensure leak-free connections.

Compatible Vehicles and Applications

• Buick Century, Regal, and Silhouette
• Chevrolet Celebrity, Corsica, Lumina, Lumina APV, and Trans Sport
• Oldsmobile Cutlass, Cutlass Ciera, Cutlass Cruiser, and Cutlass Supreme
• Pontiac 6000 and Grand Prix

This compressor is designed specifically for these GM models, providing a direct replacement for the original V5 compressor type units.

Common Issues Addressed by This Compressor

• Loss of A/C cooling due to compressor failure
• Clutch engagement problems causing intermittent cooling
• Refrigerant leaks from worn or damaged compressor seals
• Excessive noise or vibration from a failing compressor
• System overpressure protection with included high-pressure switch

Installation Notes and Tips

Installation requires removal of the old compressor and clutch assembly. Ensure the system is properly evacuated and recharged with R134a refrigerant and PAG 150 oil as specified. The 6-groove serpentine belt must be correctly routed over the 4.5-inch pulley. Note that mounting hardware is not included, so retain or replace bolts as needed. Verify electrical connections with the pin-type terminal and confirm the pressure switch is properly installed for system protection.

Quality Assurance and Warranty

The Four Seasons New Compressor 58777 is a new, direct replacement part manufactured to meet or exceed OEM standards. It includes an oil-filled compressor and clutch assembly to ensure reliable operation. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or supplier for exact warranty terms.