Four Seasons 58991 A/C Compressor

Reliable A/C Compressor for Buick, Chevrolet, Oldsmobile, and Pontiac

The Four Seasons New Compressor 58991 is designed to restore efficient air conditioning performance in select GM vehicles. Engineered for compatibility with R134a refrigerant, this A/C compressor suits models like the Buick Skylark, Chevrolet Cavalier, and Pontiac Grand Am.

Key Features of Four Seasons New Compressor 58991

• Compatible refrigerant type: R134a
• Includes oil pre-filled with PAG 150 compatible refrigerant oil
• Equipped with a 5-groove serpentine pulley for reliable belt engagement
• Pin-type electrical terminal for secure coil connection
• Comes with clutch assembly included, clutch max diameter 5 inches
• V5 compressor type with 12-volt coil voltage
• Tangent mount style with 2-inch distance from clutch to mounting flange
• Sealing washer type discharge and suction ports with included O-rings
• Designed for GM vehicles including Buick Achieva, Chevrolet Malibu, and Pontiac Sunfire

About the Four Seasons New Compressor Product Line

The New Compressor line from Four Seasons offers brand-new, ready-to-install A/C compressors engineered to meet original equipment specifications. This product line focuses on delivering reliable performance with included components such as the clutch and oil, reducing installation time and ensuring proper system lubrication. The 58991 model exemplifies this approach by providing a complete compressor solution for GM vehicles requiring R134a refrigerant systems.

Detailed Product Description

The Four Seasons 58991 A/C compressor is a V5 type unit designed specifically for GM vehicles using R134a refrigerant. It comes pre-filled with PAG 150 oil, ensuring optimal lubrication from the start. The compressor features a 5-groove serpentine pulley with a 5-inch diameter and a pin-type terminal for electrical connection. The clutch assembly is included, with a maximum diameter of 5 inches and a coil positioned at the 2 o'clock clock position. Mounting is via a tangent mount with a 2-inch distance from clutch to mounting flange, and the unit uses sealing washers on both discharge and suction ports, complete with two O-rings for a secure seal. This compressor is compatible with Buick Achieva and Skylark, Chevrolet Cavalier and Malibu, Oldsmobile models, and Pontiac Grand Am and Sunfire.

Common Issues Addressed by This A/C Compressor

• Loss of cooling due to compressor failure or clutch malfunction
• Refrigerant leaks from worn or damaged compressor seals
• Excessive noise or vibration from a failing compressor unit
• Inadequate belt engagement caused by pulley wear or clutch issues
• System contamination from compressor oil breakdown or failure

Installation Notes and Tips

• Ensure the system is evacuated and flushed before installing the new compressor
• Verify compatibility with vehicle refrigerant type R134a and use PAG 150 oil as specified
• Check pulley alignment and belt condition to prevent premature wear
• Use new O-rings and sealing washers included to maintain proper sealing
• Note that mounting hardware is not included and must be reused or sourced separately

Quality Assurance and Warranty

The Four Seasons New Compressor 58991 is a brand-new unit manufactured to meet or exceed OEM specifications for GM vehicles. It includes pre-filled oil and clutch assembly to facilitate proper installation and operation. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.