Four Seasons 6559N A/C Compressor Kit

Four Seasons 6559N A/C Compressor Kit

Four Seasons 6559N is a PAC-Kit with a new compressor for restoring air conditioning performance on select 1990 Chevrolet and GMC trucks. It is built for R4 compressor applications and supports common service needs on C/K-series and heavy-duty models.

Key Features

• Brand: Four Seasons
• Brand line: PAC-Kit w/ New Compressor
• Part number: 6559N
• A/C compressor kit for HVAC service
• Fits 1990 Chevrolet C1500, C2500, C35, C3500, K1500, K2500, and K3500
• Fits 1990 GMC C1500, C2500, C3500, K1500, K2500, and K3500 with R4 compressor applications
• GMC fitment notes include a 5.12-inch pulley diameter, 9 o'clock coil position, and single-groove pulley

Detailed Description

This Four Seasons A/C compressor kit is intended for 1990 Chevrolet C1500, C2500, C35, C3500, K1500, K2500, and K3500 models, as well as 1990 GMC C1500, C2500, C3500, K1500, K2500, and K3500 applications. The PAC-Kit w/ New Compressor line is organized for compressor replacement service, making it a direct choice when addressing compressor-related A/C repair on these truck platforms. Part number 6559N is a useful reference when searching for a 1990 Chevrolet C1500 A/C compressor kit, a 1990 GMC K2500 compressor replacement, or a Four Seasons 6559N HVAC compressor kit.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

• Replacing a worn or failed A/C compressor
• Addressing loss of cabin cooling on 1990 Chevrolet and GMC trucks
• Correcting compressor noise or seizure related to internal wear
• Restoring refrigerant circulation in R4 compressor systems
• Supporting HVAC repair after compressor-related system damage

Installation Notes and Tips

Verify compressor style and pulley configuration before ordering. GMC applications in the fitment data specify an R4 compressor with a 5.12-inch pulley diameter, 9 o'clock coil position, and single-groove pulley. Match the vehicle’s existing HVAC layout and confirm all listed fitment notes for your exact truck before installation. For best results, follow standard A/C service procedures, including system evacuation, flushing where required, and proper oil handling during compressor replacement.

Quality Assurance

Four Seasons is a recognized HVAC parts brand with a product line focused on service-ready A/C components. The 6559N PAC-Kit w/ New Compressor is cataloged for confirmed 1990 Chevrolet and GMC truck applications, including C/K-series and heavy-duty models.