Four Seasons 58931 A/C Compressor

Reliable A/C Compressor for Chevrolet and GMC Vehicles

The Four Seasons New Compressor 58931 is designed to restore efficient air conditioning performance in select Chevrolet and GMC trucks and vans. Engineered for compatibility with R134a refrigerant, this A/C compressor ensures proper cooling and system reliability for models like Silverado 1500 and Savana 2500.

• Compatible with R134a refrigerant and PAG 150 oil
• Includes clutch and high-pressure switch for complete functionality
• Features a 6-groove serpentine pulley for optimal belt engagement
• Designed with a tangent mount and precise clutch dimensions
• Pin-type terminal and 12V coil voltage for seamless electrical connection

About the Four Seasons New Compressor Line

The Four Seasons New Compressor product line offers brand-new, direct replacement compressors engineered to meet original equipment specifications. The 58931 model is part of this line, providing a fully assembled unit with included clutch and pressure switch to simplify installation and ensure system integrity. This line focuses on delivering reliable HVAC components for professional-grade repairs on GM vehicles.

Detailed Product Features and Specifications

This Four Seasons A/C compressor is designed specifically for GM trucks and vans such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, and Chevrolet Express 3500. It uses R134a refrigerant and is compatible with PAG 150 oil, which is included to maintain proper lubrication. The compressor features a 6-groove serpentine pulley with a diameter of approximately 108 mm (4.25 inches), ensuring proper belt alignment and tension. The clutch assembly is included, with a maximum diameter of 4.25 inches and a coil positioned at the 11 o'clock clock position. The unit is equipped with a high-pressure switch and pin-type electrical terminals, operating at 12 volts. Mounting is via a tangent mount with a 15.24 mm distance from clutch to mounting flange. Both suction and discharge ports use sealing washers and include O-rings for leak prevention.

Common Applications and Problem Resolution

• Restores A/C cooling in Chevrolet Silverado 1500 and GMC Sierra 3500 trucks
• Replaces faulty or worn compressors causing insufficient cooling
• Addresses clutch engagement failures in Chevrolet Express 2500 vans
• Solves high-pressure switch malfunctions affecting compressor operation
• Eliminates refrigerant leaks due to worn seals or O-rings

Installation Notes and Tips

Installation requires removal of the old compressor and proper evacuation of the A/C system. Ensure the use of PAG 150 oil as specified for lubrication. The included clutch and pressure switch simplify replacement, but mounting hardware is not included and must be sourced separately. Verify the serpentine belt condition and alignment on the 6-groove pulley. Proper torque on mounting bolts and electrical connections is essential for reliable operation.

Quality Assurance and Warranty

The Four Seasons New Compressor 58931 is a new, direct replacement part manufactured to meet or exceed OEM standards. It includes essential components such as the clutch and pressure switch to ensure system compatibility. 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.