Four Seasons 78549 A/C Compressor

Overview of Four Seasons New Compressor 78549

The Four Seasons New Compressor 78549 is designed specifically for Ford, Jaguar, and Lincoln vehicles, including models such as the LS, S-Type, and Thunderbird. This A/C compressor is engineered to work with R134a refrigerant and includes essential components for reliable HVAC system performance.

• Compatible refrigerant type: R134a
• Includes oil filled with PAG 46 compatible refrigerant oil
• Scroll type compressor with a 12V coil voltage
• Heat switch included for temperature regulation
• 6-groove serpentine pulley with 3.875 inch diameter
• Tangent mount style with precise mounting distance of 40.64 mm
• O-ring type suction and discharge ports with included green O-rings
• Pin terminal type and clutch included with a maximum diameter of 3.875 inches

Detailed Product Description

The Four Seasons New Compressor 78549 is a scroll-type A/C compressor designed for use in select Ford, Jaguar, and Lincoln vehicles, including the LS, S-Type, and Thunderbird models. This compressor operates on R134a refrigerant and is pre-filled with PAG 46 compatible oil to ensure optimal lubrication and performance. The included heat switch helps regulate compressor operation by monitoring temperature, enhancing system efficiency.

The compressor features a 6-groove serpentine pulley with a diameter of 3.875 inches, designed for smooth belt engagement and reliable power transfer. Its tangent mount style and precise mounting distance of 40.64 mm allow for straightforward installation in compatible vehicles. Both suction and discharge ports utilize O-ring seals, with two green O-rings included to ensure leak-free connections. The clutch assembly is included, featuring a 3.875-inch maximum diameter and pin-type terminals for electrical connection.

About the Four Seasons New Compressor Product Line

The New Compressor line from Four Seasons focuses on delivering brand-new, direct replacement compressors that meet original equipment specifications. This product line emphasizes quality and compatibility, providing components that include necessary features such as oil fill, clutch, and switches to simplify installation and ensure proper HVAC system function. The 78549 model is part of this line, offering a complete solution for Ford, Jaguar, and Lincoln A/C system repairs.

Common Applications and Issues Addressed

• Replacement for failed or leaking A/C compressors in Ford LS, Jaguar S-Type, and Lincoln Thunderbird
• Resolves insufficient cooling due to compressor clutch failure
• Addresses refrigerant leaks from worn or damaged O-rings on suction or discharge ports
• Fixes noisy or inefficient compressor operation caused by internal wear
• Restores proper A/C system pressure and airflow with a new scroll compressor design

Installation Notes and Tips

• Ensure compatibility with vehicle make and model before installation
• Use the included green O-rings to replace old seals on suction and discharge ports
• Verify the serpentine belt condition and alignment with the 6-groove pulley
• Check electrical connections for the pin-type terminals and heat switch
• Mount using tangent mount style hardware; note that mounting hardware is not included

Quality Assurance and Warranty

The Four Seasons New Compressor 78549 is a brand-new component manufactured to meet or exceed OEM standards. It includes pre-filled oil and necessary clutch and switch components to ensure reliable operation. While mounting hardware is not included, the compressor is designed for straightforward installation with proper tools. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.