Four Seasons 58974 A/C Compressor

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

The Four Seasons New Compressor 58974 is designed to restore efficient air conditioning performance in select GM vehicles. Engineered for compatibility with R134a refrigerant, this A/C compressor meets the specific needs of models like the Buick Century, Chevrolet Lumina, and Pontiac Grand Prix.

• Compatible with R134a refrigerant and Pag 150 oil
• Includes oil and high-pressure pressure switch for optimal operation
• Features a 6-groove serpentine pulley with a 4.25-inch clutch diameter
• V5 compressor type with 12-volt coil and pin terminal
• Ear mount installation with precise clutch-to-mounting flange distance
• Includes clutch and sealing washers for discharge and suction ports

Four Seasons New Compressor Product Line Overview

The Four Seasons New Compressor line offers brand-new, direct replacement compressors designed to meet or exceed original equipment specifications. The 58974 model is part of this line, providing a fully assembled unit with included clutch and pressure switch to simplify installation and ensure reliable performance in GM vehicles requiring a V5 compressor type.

Detailed Product Description and Specifications

This Four Seasons A/C compressor (part number 58974) is engineered for GM vehicles such as the Buick Century, Chevrolet Lumina APV, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix. It uses R134a refrigerant and is compatible with Pag 150 oil, ensuring proper lubrication and system longevity. The compressor features a 6-groove serpentine pulley with a 4.25-inch clutch diameter and a 12-volt coil positioned at the 2 o'clock clock position. The included high-pressure switch and oil-filled design help maintain system efficiency. Mounting is via an ear mount with a 1.15625-inch distance from clutch to mounting flange, and the unit comes with sealing washers for both discharge and suction ports. Note that mounting hardware is not included.

Common Applications and Issues Addressed

• Restores A/C cooling performance in Buick Century and Chevrolet Lumina models
• Replaces worn or failed compressors in Oldsmobile Cutlass and Pontiac Grand Prix vehicles
• Solves issues related to compressor clutch failure or pulley wear
• Addresses refrigerant leaks due to faulty sealing washers
• Resolves pressure switch malfunctions affecting compressor engagement

Installation Notes and Tips

• Ensure compatibility with vehicle refrigerant type R134a and use Pag 150 oil
• Verify clutch and pulley dimensions match vehicle specifications before installation
• Use proper torque settings for ear mount installation; mounting hardware not included
• Check and replace O-rings and sealing washers to prevent leaks
• Test high-pressure switch functionality after installation

Quality Assurance and Warranty Information

The Four Seasons New Compressor 58974 is a new, direct replacement part manufactured to meet OEM standards. It includes essential components such as the clutch and pressure switch to ensure reliable operation. While mounting hardware is not included, the compressor is oil-filled and ready for installation. Warranty coverage details should be confirmed with the parts provider or manufacturer.