Four Seasons 178313 A/C Compressor

Four Seasons 178313 A/C Compressor

The Four Seasons New Compressor 178313 is a new, clutch-included A/C compressor built for R134a systems using PAG 46 oil. It is a Nippondenso-style 10S17C compressor with a 12-volt coil, serpentine belt pulley, and tangent mount design for Ram truck HVAC service.

Compatible With Ram 1500, Ram 2500, Ram 3500, and Ram 4000 applications that call for a 10S17C compressor. This part number 178313 is a direct-fit replacement for select Ram and Dodge Ram A/C compressor applications.

Key Features

• New compressor assembly with clutch included
• R134a refrigerant type with PAG 46 oil specification
• 10S17C compressor design with Nippondenso type construction
• 12-volt coil with pin terminal connection
• Serpentine belt pulley with 8-groove configuration
• O-ring suction and discharge ports
• Tangent mount style for supported Ram truck applications
• May require use of OE manifold

Product Details

Four Seasons 178313 is built for Ram HVAC systems that use the 10S17C compressor platform. It features an 8-groove serpentine pulley, O-ring port connections, and a 4.734-inch clutch diameter. The unit is oil filled and supplied as a new compressor, making it a practical replacement for worn or failed factory A/C components on Ram 2500, Ram 3500, and related Dodge Ram applications.

This part cross-references UAC CO11311C for the same application.

Common Problems This Compressor Can Address

• No cold air from the vents
• Compressor clutch engagement issues
• Noise from a worn or failing A/C compressor
• Refrigerant leakage at compressor ports or seals
• Loss of system pressure in the air conditioning circuit

Installation Notes

• Verify the vehicle uses a 10S17C compressor before ordering.
• Confirm R134a refrigerant service requirements and PAG 46 oil compatibility.
• Inspect the OE manifold, since this compressor may require reuse of the original manifold.
• Replace O-rings and evacuate/recharge the system according to factory service procedures.
• Check belt alignment and pulley groove match before final assembly.

Quality Assurance

Four Seasons New Compressor parts are built as new replacement components for HVAC service work. Part number 178313 is specified for select 2010-2025 Ram and Dodge Ram truck applications listed in the fitment data, including Ram 2500, Ram 3500, Ram 4000, and Ram 1500 models.