Four Seasons 4854N A/C Compressor Kit

Four Seasons 4854N A/C Compressor Kit

Restore cabin cooling on select Chevrolet Silverado HD and GMC Sierra HD trucks with the Four Seasons 4854N PAC-Kit w/ New Compressor. This A/C compressor kit is built for specific 2002-2004 heavy-duty applications and matches the listed compressor, orifice tube, accumulator, flush, and oil requirements for the vehicle configuration.

Key Features

• Four Seasons PAC-Kit w/ New Compressor for HVAC A/C compressor replacement
• Fits select 2002-2004 Chevrolet Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 applications
• Application-specific coverage for 10S17F and 10S20F compressor setups
• Configured for 17mm orifice tube diameter applications
• Includes fitment notes for ambulance package and non-ambulance package trucks where listed
• Part number 4854N for direct catalog identification

Detailed Description

The Four Seasons 4854N is a PAC-Kit w/ New Compressor for heavy-duty GM trucks that need a precise A/C compressor replacement. It is listed for 2002-2004 Chevrolet Silverado 2500 HD and Silverado 3500, plus 2002-2004 GMC Sierra 2500 HD and Sierra 3500, with configuration-specific notes for compressor type, orifice tube diameter, and related HVAC components. For buyers searching for a 2004 Chevrolet Silverado 2500 HD A/C compressor kit or a 2003 GMC Sierra 3500 compressor replacement, this part number helps narrow the application by exact vehicle setup.

Four Seasons 4854N is also a useful reference when searching for a 2002 Chevrolet Silverado 3500 A/C compressor kit or a 2004 GMC Sierra 2500 HD HVAC compressor assembly. The PAC-Kit line identifies a packaged compressor solution for the listed truck applications, and the fitment notes should be matched carefully before ordering.

What It Helps Address

• Loss of cold air from a worn or failed A/C compressor
• Noisy compressor operation in the HVAC system
• Incorrect cooling performance on listed Silverado HD and Sierra HD applications
• Fitment issues caused by mismatched compressor type or orifice tube diameter
• Service replacement needs for trucks with the specified factory configuration

Installation Notes and Tips

Verify the compressor type, orifice tube diameter, and vehicle notes before installation. Match the listed configuration exactly, including ambulance package and Denso compressor references where shown in the fitment data. Confirm the part number 4854N against the vehicle’s existing HVAC setup and inspect the system for contamination before reassembly.

Quality Assurance

Four Seasons is a recognized HVAC parts brand, and the PAC-Kit w/ New Compressor line is cataloged for application-specific replacement on the listed GM heavy-duty trucks. This part cross-references 78348 and 83211 for the same application.