Four Seasons 3663R A/C Compressor Kit - Front and Rear

Four Seasons 3663R A/C Compressor Kit

The Four Seasons 3663R is a PAC-Kit with reman compressor for front and rear HVAC systems on select Ford Explorer and Mercury Mountaineer models. It is built for vehicles with a scroll compressor and OE-style compressor layout, making it a direct-fit service option for common A/C compressor replacement jobs.

Key Features

• Part number 3663R from Four Seasons
• PAC-Kit w/ Reman Compressor for A/C service
• Fits front and rear HVAC applications
• OE design compressor configuration
• Application-specific fitment for select Ford Explorer and Mercury Mountaineer models
• Includes related A/C service components listed for the application

Vehicle Fitment

• Fits 2004-2005 Ford Explorer, front and rear, with scroll compressor and OE design compressor.
• Fits 2003-2005 Mercury Mountaineer, front and rear, with scroll compressor and OE design compressor.
• Fits 2003 Ford Explorer, front and rear, with scroll compressor, right angle style expansion valve, and OE design compressor.

Product Details

Four Seasons PAC-Kit line products are organized as application-specific A/C service kits for vehicles that require matched compressor and system components. This 3663R kit is listed for 2003-2005 Ford Explorer and 2003-2005 Mercury Mountaineer models with front and rear HVAC, and the fitment notes call out the scroll compressor and OE design compressor configuration. The part number 3663R is also useful when searching for a remanufactured compressor kit for these vehicles.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common A/C Problems It Can Address

• Loss of compressor output
• Noisy or seized A/C compressor
• Weak cabin cooling from compressor wear
• System performance issues after compressor failure
• Service needs on front and rear HVAC A/C systems

Installation Notes

Verify the vehicle’s compressor style and HVAC configuration before installation. For 2003 Ford Explorer applications, confirm the right angle style expansion valve noted in the fitment data. Follow standard A/C service procedures, including proper evacuation, flushing, oil management, and leak checking before returning the system to service.

Quality Assurance

Four Seasons catalogs this PAC-Kit as an OE design compressor application for the listed Ford Explorer and Mercury Mountaineer fitments. Confirm the part number 3663R against the vehicle’s existing A/C system details before ordering.