Four Seasons 78600 A/C Compressor

Reliable Four Seasons New Compressor for HVAC Systems

The Four Seasons New Compressor 78600 is designed to restore efficient air conditioning performance in vehicles requiring R134a refrigerant. Engineered for compatibility with specific automotive HVAC systems, this A/C compressor ensures proper cooling and system reliability.

• Compatible with R134a refrigerant and Pag 46 oil type
• Includes oil pre-filled for immediate use
• Features a 10-groove serpentine pulley for optimal belt engagement
• Equipped with a 12V coil and bullet terminal for electrical connection
• Comes with clutch included, clutch maximum diameter 5.56 inches
• Tangent mount style for secure installation
• Designed as a new compressor, not remanufactured
• Includes two O-rings (part number 24632) for sealing
• Compatible with York, diesel Kiki, Zexel, and Seltec compressor types

About the Four Seasons New Compressor Product Line

The Four Seasons New Compressor line offers brand-new, direct replacement compressors engineered to meet or exceed original equipment specifications. The 78600 model is part of this line, providing a reliable solution for HVAC systems requiring a TM21HD compressor type. This product line focuses on delivering components that are pre-filled with the correct oil and designed for straightforward installation, ensuring consistent performance in compatible vehicles.

Detailed Product Description

This Four Seasons A/C compressor (part number 78600) is designed for vehicles using R134a refrigerant and requires Pag 46 oil for optimal lubrication. The compressor comes pre-filled with oil, eliminating the need for additional oil during installation. It features a 10-groove serpentine pulley with a diameter of approximately 5.56 inches, matching the clutch diameter and pulley lip and ridge diameters for balanced operation. The coil operates at 12 volts and uses a bullet terminal with a single wire lead for electrical connection. The tangent mount style ensures a secure fit within the engine bay. This compressor is compatible with York, diesel Kiki, Zexel, and Seltec compressor types, making it suitable for a range of vehicle makes and models that utilize these systems.

Common Applications and Issues Addressed

• Restores A/C cooling performance in vehicles with failing compressors
• Replaces compressors with worn or damaged clutches
• Solves refrigerant leaks related to compressor seals
• Addresses noisy or seized compressor units
• Improves system efficiency by replacing remanufactured or faulty compressors

Installation Notes and Tips

Ensure the system is properly evacuated and flushed before installing the new compressor. Verify compatibility with your vehicle’s refrigerant type (R134a) and oil requirements (Pag 46). The compressor includes two O-rings (part number 24632) for sealing connections; replace old O-rings to prevent leaks. Note that mounting hardware is not included and must be reused or sourced separately. Confirm the serpentine belt and pulley groove count (10 grooves) match your vehicle’s specifications. Electrical connections use a bullet terminal with a single wire lead; inspect wiring harness for compatibility.

Quality Assurance and Warranty

The Four Seasons New Compressor 78600 is a new, not remanufactured, component designed to meet OEM standards. It is manufactured to provide reliable operation and durability under normal use. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation to ensure protection against defects.