Four Seasons 78546 A/C Compressor

Reliable A/C Compressor Replacement for Mazda 626

The Four Seasons New Compressor 78546 is designed to restore efficient air conditioning performance in your Mazda 626. Engineered to meet OEM specifications, this A/C compressor ensures compatibility and durability for your vehicle's HVAC system.

• Compatible with R134a refrigerant
• Includes oil pre-filled with PAG 100 refrigerant oil
• Equipped with a 5-groove serpentine pulley
• Features a 12-volt coil with a 1-wire lead terminal
• Includes clutch assembly with a maximum diameter of 4.6875 inches
• Mounting type: tangent mount with a 0.703125 inch distance from clutch to mounting flange
• Discharge and suction ports sealed with green O-rings (part numbers 24608 and 24610)
• Designed as a Sanden/Sankyo SD709 compressor type

About the Four Seasons New Compressor Line

The Four Seasons New Compressor product line offers brand-new, direct-fit A/C compressors engineered for specific vehicle applications. This line focuses on providing reliable replacements that come pre-filled with the correct type and amount of refrigerant oil, reducing installation time and ensuring proper lubrication. The New Compressor 78546 is part of this line, tailored for the Mazda 626 to maintain factory performance standards.

Product Details and Specifications

This Four Seasons A/C compressor (part number 78546) is designed for use with R134a refrigerant and includes PAG 100 oil pre-filled for optimal compressor operation. The compressor features a 5-groove serpentine pulley with a diameter of 4.6875 inches, compatible with the Mazda 626's belt system. The clutch assembly is included, with a maximum diameter of 4.6875 inches and a coil voltage of 12 volts, utilizing a spade terminal with a single wire lead for electrical connection. The mounting is tangent style, with a precise distance of 0.703125 inches from the clutch to the mounting flange, ensuring proper fitment. Both discharge and suction ports use O-ring seals to prevent leaks, with green O-rings included for secure sealing.

Common Applications and Issues Addressed

• Replacement for faulty or worn-out A/C compressors in Mazda 626 models
• Restores proper refrigerant compression and circulation
• Eliminates A/C clutch slippage or failure
• Resolves insufficient cooling due to compressor malfunction
• Addresses refrigerant leaks at compressor ports

Installation Notes and Tips

Ensure the system is properly evacuated and recharged with R134a refrigerant after installation. Verify that the serpentine belt aligns correctly with the 5-groove pulley. The compressor comes pre-filled with PAG 100 oil, so additional oil is typically not required. Note that mounting hardware is not included and must be reused or sourced separately. Confirm electrical connections match the spade terminal and 1-wire lead configuration for proper clutch operation.

Quality Assurance and Warranty

The Four Seasons New Compressor 78546 is a new, direct-fit replacement part manufactured to meet or exceed OEM standards. It undergoes rigorous quality control to ensure reliable performance and durability. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.