Four Seasons 3863N A/C Compressor Kit - Front

Four Seasons PAC-Kit w/ New Compressor 3863N

Four Seasons 3863N is an A/C compressor kit for specific front HVAC applications on Pontiac Montana and Oldsmobile Silhouette models. This PAC-Kit w/ New Compressor is built for vehicles with rear A/C and the listed compressor, drier, expansion valve, flush, and oil requirements.

Key Features

• Brand: Four Seasons
• Brand line: PAC-Kit w/ New Compressor
• Part number: 3863N
• Category: HVAC A/C clutch and compressor
• Front-position application
• For vehicles with rear A/C where specified in fitment
• Includes the compressor kit components identified in the fitment notes

Fitment Details

• Fits 2005 Pontiac Montana, front, with MSC130CVSG compressor and rear A/C.
• Fits 2001-2004 Oldsmobile Silhouette, front.
• Fits 2001-2004 Pontiac Montana, front.

Product Description

Four Seasons PAC-Kit w/ New Compressor 3863N is a direct-fit A/C compressor kit for select Pontiac Montana and Oldsmobile Silhouette vehicles. The fitment notes identify the required compressor family and related service components for the 2005 Pontiac Montana with rear A/C, making this part number useful when servicing front HVAC systems on these applications. Four Seasons 3863N is listed for 2001-2004 Pontiac Montana and 2001-2004 Oldsmobile Silhouette front applications as well.

Common Repair Uses

• Restoring front A/C compressor operation
• Replacing a noisy, seized, or weak compressor
• Addressing loss of cooling performance in the front HVAC system
• Servicing A/C components after compressor failure
• Repairing fitment-specific front A/C issues on Pontiac Montana and Oldsmobile Silhouette models

Installation Notes

Verify the vehicle’s year, make, model, and front-position fitment before ordering. Match the compressor code and the notes listed for your application, especially on the 2005 Pontiac Montana with rear A/C. Follow standard A/C service procedures, including system evacuation, flushing where required, and correct oil handling for the vehicle.

Quality Assurance

Four Seasons supplies HVAC service parts for automotive A/C repair, and this PAC-Kit line is organized around application-specific compressor replacement. Part number 3863N is cataloged for the exact Pontiac Montana and Oldsmobile Silhouette fitments shown above.