Four Seasons 1821R A/C Compressor and Component Kit - Front

Four Seasons PAC-Kit w/ Reman Compressor 1821R

Four Seasons 1821R is an A/C compressor kit for select GM full-size trucks and SUVs from 2006-2010. This PAC-Kit w/ Reman Compressor is built for applications using 10S17F or 10S20F compressor configurations, with fitment that varies by model year, engine setup, and rear A/C equipment.

Key Features

• Four Seasons PAC-Kit w/ Reman Compressor for HVAC A/C compressor replacement
• Fits 2006-2010 Chevrolet Avalanche, Silverado, Suburban, Tahoe, and related GM applications
• Fits 2006-2010 GMC Sierra, Yukon, and Yukon XL applications
• Fits 2006-2009 Cadillac Escalade, Escalade ESV, and Escalade EXT front A/C applications
• Application-specific notes cover compressor type, rear A/C, orifice tube, accumulator, flush, and oil requirements
• Part number 1821R for direct catalog lookup

Detailed Description

Four Seasons 1821R is a PAC-Kit w/ Reman Compressor for GM vehicles that require a remanufactured compressor in the 10S17F or 10S20F family. Coverage includes 2006-2010 Chevrolet Avalanche, 2006-2009 Chevrolet Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, 2006-2009 GMC Sierra, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, and 2006-2009 Cadillac Escalade models, along with 2006-2007 Chevrolet Suburban and Tahoe and 2007-2008 GMC Yukon and Yukon XL applications. The fitment notes identify the exact compressor style and system configuration, including vehicles with or without rear A/C.

This part number 1821R is intended for buyers matching an A/C compressor kit to a specific GM HVAC setup. If you are searching for a reman compressor kit for a 2007 Chevrolet Silverado 1500, 2008 GMC Sierra 1500, or 2006 Cadillac Escalade front A/C system, verify the compressor code and system notes before ordering.

What It Helps Address

• Loss of cabin cooling from a failed A/C compressor
• Noisy or seized compressor operation
• Incorrect compressor match during GM A/C service
• System contamination after compressor failure when related components are serviced
• Fitment issues on vehicles with specific 10S17F or 10S20F compressor requirements

Installation Notes and Tips

Confirm the compressor code, model year, and rear A/C configuration before installation. Review the vehicle-specific notes for accumulator, orifice tube, flush, and oil references listed in the fitment data. Proper evacuation, flushing, and refrigerant charging procedures are important after compressor replacement. Part number 1821R should be matched to the exact application shown in the catalog.

Quality Assurance

Four Seasons supplies HVAC service parts for automotive air conditioning repair, and this PAC-Kit is cataloged for specific OE-style GM applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.