Four Seasons 78484 A/C Compressor

Reliable A/C Compressor for Mitsubishi Eclipse and Galant

The Four Seasons New Compressor 78484 is designed to restore efficient air conditioning performance in Mitsubishi Eclipse and Galant models. Engineered to meet OEM specifications, this A/C compressor ensures proper cooling with compatible refrigerant and oil types.

• Compatible with Mitsubishi Eclipse and Galant vehicles
• Uses R134a refrigerant and Pag 46 oil for optimal performance
• Includes clutch assembly and oil pre-filled for convenience
• Features heat switch and RPM sensor for precise operation
• Designed with a 6-groove serpentine pulley and tangent mount

Four Seasons New Compressor Product Line

The New Compressor line from Four Seasons offers brand-new, direct replacement A/C compressors built to meet or exceed original equipment standards. This product line focuses on delivering reliable cooling components with included clutches, pre-filled oil, and integrated switches to simplify installation and ensure system compatibility. The 78484 model exemplifies these qualities, providing a complete compressor solution for Mitsubishi vehicles.

Technical Specifications and Features

This Four Seasons A/C compressor (part number 78484) is designed for use with R134a refrigerant and compatible with Pag 46 refrigerant oil. It includes a heat switch and RPM sensor to monitor system operation accurately. The compressor is oil-filled and comes with the clutch assembly included, featuring a clutch maximum diameter of 3.78125 inches. The pulley has six grooves and a serpentine belt type, with a pulley diameter of approximately 96 mm (3.78 inches). The mounting type is tangent mount with a mount distance of 30.48 mm (1.203125 inches) from clutch to mounting flange. The discharge and suction ports use O-ring seals for secure connections. Coil voltage is 12 volts with a single wire lead coil clock position, and the terminal type is pin style.

Common Applications and Problem Resolution

• Restores A/C cooling in Mitsubishi Eclipse and Galant models
• Replaces worn or failed compressors causing insufficient cooling
• Addresses clutch engagement issues with included clutch assembly
• Resolves refrigerant leaks with O-ring sealed ports
• Improves system reliability by integrating heat switch and RPM sensor

Installation Notes and Tips

Installation of the Four Seasons 78484 compressor requires removal of the old compressor and proper handling of refrigerant. The unit comes pre-filled with oil and includes the clutch assembly, but mounting hardware is not included and must be sourced separately. Ensure compatibility with R134a refrigerant and Pag 46 oil during system servicing. Verify the serpentine belt alignment with the 6-groove pulley and confirm electrical connections for the heat switch and RPM sensor terminals. Proper torque specifications should be followed for the tangent mount installation.

Quality Assurance and Warranty

Four Seasons New Compressor products are manufactured to meet industry standards for durability and performance. The 78484 compressor is a new unit, not remanufactured, ensuring consistent quality. While specific warranty details are not provided here, Four Seasons typically offers limited warranties on their compressor line to cover defects in materials and workmanship.