Four Seasons 78190 A/C Compressor

Reliable A/C Compressor for Ford F-Series Trucks

The Four Seasons New Compressor 78190 is designed specifically for Ford F-150, F-250 Super Duty, and F-350 Super Duty models. Engineered to work with R134a refrigerant and compatible with Pag 46 oil, this A/C compressor ensures efficient cooling performance for your vehicle's HVAC system.

• Compatible Refrigerant: R134a
• Oil Type: Pag 46 (oil filled included)
• Pulley Groove Quantity: 6
• Coil Voltage: 12V with 1 wire lead terminal
• Includes clutch assembly with a maximum diameter of 4.9375 inches
• Serpentine belt pulley with 4.9375 inch diameter
• Tangent mount type with 2.078 inch distance from clutch to mounting flange
• Discharge and suction ports sealed with O-ring/gasket
• Compatible with Ford F-150, F-250 Super Duty, and F-350 Super Duty

About the Four Seasons New Compressor Line

The Four Seasons New Compressor product line offers brand-new, direct replacement compressors designed to meet or exceed OEM specifications. The 78190 model is part of this line, providing a complete assembly that includes the clutch and oil pre-filled for immediate installation. This line focuses on delivering reliable HVAC performance for heavy-duty Ford trucks requiring R134a refrigerant systems.

Detailed Product Description

This Four Seasons A/C compressor (part number 78190) is engineered for Ford trucks equipped with R134a refrigerant systems. It features a 6-groove serpentine pulley designed to match factory belt configurations, ensuring proper belt alignment and tension. The clutch assembly is included and sized with a maximum diameter of 4.9375 inches, providing consistent engagement and disengagement for efficient compressor operation. The compressor uses a tangent mount with a precise 2.078 inch distance from clutch to mounting flange, facilitating a secure fit. Both suction and discharge ports utilize O-ring and gasket seals to prevent refrigerant leaks. The coil operates at 12 volts with a single wire lead terminal, compatible with factory wiring harnesses.

Common Applications and Issues Addressed

• Replacement for failed or leaking A/C compressors in Ford F-150, F-250 Super Duty, and F-350 Super Duty trucks
• Resolves insufficient cooling due to compressor clutch failure
• Addresses refrigerant leaks caused by worn seals or damaged ports
• Fixes noisy or seized compressor units affecting HVAC performance
• Restores proper serpentine belt alignment and tension with correct pulley design

Installation Notes and Tips

Installation requires removal of the old compressor and clutch assembly. This unit comes pre-filled with compatible Pag 46 oil, eliminating the need for additional oil charging. Note that mounting hardware is not included and must be reused or sourced separately. Ensure all O-rings and sealing washers are replaced during installation to prevent leaks. Verify electrical connections match the 1-wire lead pin terminal type. Proper belt tension and alignment are critical for optimal compressor operation.

Quality Assurance and Warranty

The Four Seasons New Compressor 78190 is a new, direct replacement part manufactured to meet OEM standards for fit, form, and function. It includes factory-installed oil and clutch assembly for reliable performance. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.