Four Seasons 40021SK A/C Compressor Replacement Service Kit

Reliable A/C Compressor Replacement Service Kit for Mercedes-Benz

The Four Seasons 40021SK A/C Compressor Replacement Service Kit is designed specifically for Mercedes-Benz models including the C55 AMG, CLK63 AMG, CLS63 AMG, and E55 AMG among others. This comprehensive kit provides all necessary components to service and maintain your vehicle's air conditioning system efficiently.

• Includes compressor oil (Pag oil / 46) for optimal lubrication
• Block type expansion device with insert o-ring inlet and outlet for secure sealing
• Complete gasket and o-ring pack included for reliable sealing
• Filter drier and receiver drier with pad mount fittings for precise fitment
• Compatible with R134a refrigerant systems
• Receiver drier dimensions: 1.750 inch diameter, 16.000 inch length
• Limited lifetime warranty for long-term assurance

About Four Seasons A/C Installer Kits

The Four Seasons A/C Installer Kits product line offers comprehensive service kits tailored to specific vehicle applications. These kits include essential components such as filter driers, expansion valves, compressor oil, and sealing elements to facilitate proper A/C system maintenance and repair. The 40021SK kit is part of this line, ensuring compatibility and quality for Mercedes-Benz air conditioning systems.

Detailed Product Description

This A/C Compressor Replacement Service Kit (part number 40021SK) is engineered to meet the precise requirements of Mercedes-Benz models like the C230, CLS500, and E320. It includes Pag oil type 46 compressor oil to maintain compressor performance and longevity. The block type expansion device features insert o-ring inlet and outlet connections, providing secure and leak-free operation. The kit also contains a filter drier and a receiver drier with pad mount fittings sized for the vehicle’s system, ensuring proper filtration and moisture removal. Gaskets and seals are included to maintain system integrity during installation. Designed for R134a refrigerant, this kit supports effective air conditioning system service and repair.

Common Applications and Issues Addressed

• Replacement of worn or damaged expansion valves causing poor cooling
• Servicing compressor oil to prevent compressor failure
• Replacing clogged or saturated filter driers to restore system efficiency
• Sealing leaks with new o-rings and gaskets to maintain refrigerant pressure
• Upgrading receiver drier components to ensure moisture removal and system protection

Installation Notes and Tips

When installing the Four Seasons 40021SK kit, ensure the system is properly evacuated before replacing components. Use the included Pag oil type 46 compressor oil to lubricate the compressor and system parts. Carefully install the block type expansion valve with insert o-rings to prevent leaks. Verify that the receiver drier pad mount fittings are securely connected. Follow manufacturer guidelines for refrigerant recharge with R134a to maintain system performance.

Quality Assurance and Warranty

Four Seasons backs the 40021SK A/C Compressor Replacement Service Kit with a limited lifetime warranty, reflecting confidence in the durability and reliability of the components. This warranty provides peace of mind for professional technicians and vehicle owners servicing Mercedes-Benz models such as the CLK350, CLS550, and E550.