Four Seasons 4854R A/C Compressor Kit

Four Seasons PAC-Kit w/ Reman Compressor

Four Seasons Part Number 4854R is an A/C compressor kit for specific 2003-2004 Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 applications. This PAC-Kit w/ Reman Compressor is built for vehicles using a 10S17F compressor and a 17mm orifice tube diameter.

Key Features

• Four Seasons PAC-Kit w/ Reman Compressor for HVAC A/C compressor replacement
• Fits 2004 Chevrolet Silverado 2500 HD, N/A, with 10S17F compressor and 17mm orifice tube diameter
• Fits 2004 Chevrolet Silverado 3500, N/A, with 10S17F compressor and 17mm orifice tube diameter
• Fits 2004 GMC Sierra 2500 HD, N/A, with 10S17F compressor and 17mm orifice tube diameter
• Fits 2004 GMC Sierra 3500, N/A, with 10S17F compressor and 17mm orifice tube diameter
• Fits 2003 Chevrolet Silverado 2500 HD, N/A, with 10S17F compressor and 17mm orifice tube diameter
• Fits 2003 Chevrolet Silverado 3500, N/A, with 10S17F compressor and 17mm orifice tube diameter
• Fits 2003 GMC Sierra 2500 HD, N/A, with 10S17F compressor and 17mm orifice tube diameter
• Fits 2003 GMC Sierra 3500, N/A, with 10S17F compressor and 17mm orifice tube diameter

Product Details

Part 4854R is a remanufactured compressor kit for select Chevrolet Silverado and GMC Sierra heavy-duty trucks from 2003-2004. The application notes call for a grey orifice tube, no ambulance package, and a drier with P-nut fitting clocked at 2:00 on 2004 models. This makes 4854R a fitment-specific choice for trucks that match the listed compressor and orifice tube requirements.

This part cross-references common service references for the same application, including 77348 and 83211.

Common Replacement Reasons

• Loss of cabin cooling performance
• Compressor noise or seizure
• Incorrect A/C system pressure behavior
• Orifice tube or accumulator service during A/C repair
• Restoring A/C operation on 2003-2004 Silverado and Sierra HD trucks

Installation Notes

Verify the compressor type, orifice tube diameter, and vehicle configuration before installation. The listed fitment excludes ambulance package applications and includes specific notes for the drier fitting and clocking on 2004 models. Flush the system and confirm correct oil and component match before charging the A/C system.

Quality Assurance

Four Seasons supplies HVAC service parts for vehicle-specific A/C repair applications. Part Number 4854R is cataloged as a PAC-Kit with reman compressor for the listed Chevrolet Silverado and GMC Sierra HD fitments.