Four Seasons 78593 A/C Compressor

Overview of Four Seasons New Compressor 78593

The Four Seasons New Compressor 78593 is designed specifically for Land Rover Range Rover models requiring a reliable HVAC A/C compressor. Engineered to work with R134a refrigerant and compatible with Pag 46 oil, this compressor ensures efficient cooling performance and system longevity.

• Compatible Refrigerant: R134a
• Refrigerant Oil Type: Pag 46
• Compressor Type: TRS105
• Coil Voltage: 12V with 1 wire lead
• Pulley Groove Quantity: 7, designed for serpentine belts
• Includes clutch and heat sensor switch
• Mounting Type: Tangent mount with 2.000 inch distance from clutch to mounting flange
• Discharge and suction ports use O-ring seals for secure connections
• Pulley diameter: 3.953125 inches (100.965 mm)
• Pin terminal type for electrical connection

Four Seasons New Compressor Product Line Details

The Four Seasons New Compressor line offers brand-new, direct replacement compressors designed to meet or exceed OEM specifications. This product line focuses on delivering reliable HVAC components that integrate seamlessly with existing vehicle systems. The 78593 model is part of this line, providing a complete compressor solution including clutch and heat sensor switch, optimized for Land Rover Range Rover applications.

Technical Description and Features

This A/C compressor features a TRS105 type design, compatible with R134a refrigerant and Pag 46 oil, which are standard in many modern automotive air conditioning systems. The included clutch has a maximum diameter of 3.953125 inches and is designed to operate with a serpentine belt system featuring seven pulley grooves. The compressor coil operates at 12 volts and uses a single wire lead for connection, simplifying installation. Both discharge and suction ports utilize O-ring seals (green O-rings, part numbers 24613 and 24622) to ensure leak-free operation. The tangent mount style with a 2.000 inch clutch-to-mounting flange distance and 50.8 mm mount distance provides a secure fit in the engine bay.

Compatible Vehicles and Common Applications

• Replacement for Land Rover Range Rover HVAC A/C compressor needs
• Addresses issues such as insufficient cooling or compressor clutch failure
• Resolves refrigerant leaks due to worn O-rings or seals
• Fixes compressor noise or failure caused by internal wear
• Restores proper A/C system pressure and performance

Installation Notes and Tips

Installation requires removal of the old compressor and clutch assembly. Note that mounting hardware is not included and must be reused or sourced separately. Ensure the system is evacuated and recharged with R134a refrigerant and compatible Pag 46 oil. Verify electrical connections match the pin terminal and single wire lead coil configuration. Proper torque specifications should be followed for mounting bolts and clutch installation to avoid premature wear.

Quality Assurance and Warranty

The Four Seasons New Compressor 78593 is a new, direct replacement part manufactured to meet OEM standards. It includes an oil-filled compressor and heat sensor switch to maintain system integrity. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Verify warranty terms with the supplier or manufacturer documentation.