Four Seasons 67643 A/C Compressor

Reman A/C Compressor for Infiniti

Four Seasons 67643 is a remanufactured A/C compressor built for vehicles using the CWE618 compressor design. It is configured for R134a refrigerant, PAG 46 oil, and a 12-volt clutch system, with the clutch included for a complete compressor assembly.

Compatible with select 2003-2008 INFINITI FX45, 2003-2006 INFINITI Q45, and 2003-2004 INFINITI M45 applications that use the CWE618 compressor. Four Seasons 67643 is a direct-fit reman compressor for Infiniti HVAC service where the original unit uses a serpentine belt drive and tangent mount layout.

Key Features

• Brand: Four Seasons Reman Compressor
• Part number: 67643
• Remanufactured A/C compressor with clutch included
• Refrigerant type: R134a
• Compatible refrigerant oil: PAG 46
• 12-volt coil with pin terminal type
• 6-groove serpentine pulley
• Tangent mount design
• O-ring suction and discharge ports
• Oil filled: included
• Type: Nihon/Calsonic

Product Details

This Four Seasons reman compressor is built around the CWE618 compressor type and uses a 6-groove serpentine pulley with a 4.875-inch clutch and pulley diameter. It features O-ring suction and discharge ports, a smooth deep suction port profile, and a 1-wire lead coil clock position. The unit includes the clutch and comes oil filled, making it a practical replacement for Infiniti HVAC repair work on FX45, Q45, and M45 models.

This part cross-references Bosch 67643 for the same application.

Common Problems This Part Addresses

• Loss of A/C cooling performance
• Noisy or seized compressor operation
• Compressor clutch engagement issues
• Refrigerant leakage at compressor ports
• System failure tied to worn internal compressor components

Installation Notes

Verify the vehicle uses the CWE618 compressor before ordering. Match the refrigerant type, PAG 46 oil requirement, pulley groove count, and connector style to the original unit. Replace O-rings during installation, confirm proper belt alignment, and evacuate and recharge the system with the correct R134a service procedure.

• Fits 2003-2008 INFINITI FX45, N/A; w/ CWE618 Compressor; Reman w/ Clutch; Reman Compressor
• Fits 2003-2006 INFINITI Q45, N/A; w/ CWE618 Compressor; Reman w/ Clutch; Reman Compressor
• Fits 2003-2004 INFINITI M45, N/A; w/ CWE618 Compressor; Reman w/ Clutch; Reman Compressor

Quality Assurance

Four Seasons remanufactured compressors are built to meet application-specific replacement needs for OE-style HVAC service. Part number 67643 is specified for the listed Infiniti applications and compressor configuration.