Four Seasons 4391R A/C Compressor Kit

Four Seasons PAC-Kit w/ Reman Compressor 4391R

Four Seasons 4391R is an A/C compressor kit for specific 2003-2007 Chevrolet Silverado 1500 and GMC Sierra 1500 applications. This PAC-Kit w/ Reman Compressor is built for vehicles using the 10S17F compressor and the listed system components shown below.

Key Features

• Four Seasons PAC-Kit w/ Reman Compressor
• Part number 4391R for targeted HVAC service
• Fits Chevrolet Silverado 1500 and GMC Sierra 1500 applications listed below
• Application-specific coverage for 2003-2007 model years
• Configured for systems with 10S17F compressor requirements
• Includes fitment notes for accumulator, orifice, flush, and oil references

Fitment Details

• Fits 2007 Chevrolet Silverado 1500, N/A — w/ 10S17F Compressor; Drier w/o Service Port; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)
• Fits 2007 Chevrolet Silverado 1500 Classic, N/A — w/ 10S17F Compressor; Drier w/o Service Port; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)
• Fits 2007 GMC Sierra 1500, N/A — w/ 10S17F Compressor; Drier w/o Service Port; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)
• Fits 2007 GMC Sierra 1500 Classic, N/A — w/ 10S17F Compressor; Drier w/o Service Port; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)
• Fits 2006 Chevrolet Silverado 1500, N/A — w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; Drier w/o Service Port; w/ Grey Orifice Tube; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)
• Fits 2006 GMC Sierra 1500, N/A — w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; Drier w/o Service Port; w/ Grey Orifice Tube; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)
• Fits 2003-2005 Chevrolet Silverado 1500, N/A — w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/ Grey Orifice Tube; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)
• Fits 2003-2005 GMC Sierra 1500, N/A — w/ 10S17F Compressor; w/ 17mm Orifice Tube Dia.; w/ Grey Orifice Tube; 77348 (Reman Compressor), 83207 (Accum), 38644 (Orifice), 69991 (Flush), 59007 (Oil)

What This Kit Helps Address

• Loss of A/C cooling performance in Silverado 1500 and Sierra 1500 systems
• Compressor noise or compressor failure in 10S17F-equipped vehicles
• System contamination concerns after compressor replacement
• Restricted refrigerant flow related to the orifice tube
• Service needs tied to the accumulator and flush components listed in the application notes

Installation Notes

Verify the compressor style and system notes before ordering. This application is listed for vehicles with a 10S17F compressor, and some 2006-2007 applications include specific drier and orifice tube requirements. Follow proper HVAC service procedures, including system evacuation, flushing where required, and correct oil handling for the listed application.

Quality Assurance

Four Seasons 4391R is part of the PAC-Kit w/ Reman Compressor line, which groups application-specific HVAC service components for the listed truck platforms. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.