Four Seasons 20145SK A/C Compressor Replacement Service Kit

Four Seasons A/C Installer Kit for Mazda

Restore key air conditioning service components with the Four Seasons 20145SK A/C Installer Kit. This A/C service kit includes the parts commonly replaced during compressor-related HVAC repairs, helping support proper refrigerant flow and system sealing on select Mazda applications.

Built for R134a systems, this kit is centered around the components needed for a compressor replacement service on Mazda 3, Mazda 3 Sport, Mazda 6, and Mazda CX-5 applications. The Four Seasons A/C Installer Kits line is organized for service work that calls for matched replacement parts in one package.

Key Features

• Part number 20145SK
• Includes filter drier, expansion valve, compressor oil, O-ring/gasket pack, and cap and valve kit
• PAG Oil / 46 included
• Block-type expansion device
• O-ring inlet and outlet connections on the expansion valve
• R134a refrigerant system application
• Limited lifetime warranty
• Cross-reference: Monroe Shocks & Struts 550625 and MUK20142 for the same application

Product Details

The Four Seasons 20145SK is an A/C compressor replacement service kit built around the service parts needed for select Mazda HVAC repairs. It includes a filter drier, expansion valve, compressor oil, necessary O-rings and gaskets, plus a cap and valve kit. The included compressor oil is PAG Oil / 46, and the expansion device is a block type with O-ring inlet and outlet fittings. This kit is intended for R134a air conditioning systems and is listed under Four Seasons A/C Installer Kits for organized compressor service work.

Compatible With 2013-2021 Mazda CX-5, 2014-2021 Mazda 6, 2014 Mazda 3, 2014 Mazda 3 Sport, 2015 Mazda 3, 2015 Mazda 3 Sport, 2016-2017 Mazda 3, 2016-2017 Mazda 3 Sport, and 2018 Mazda 3 and Mazda 3 Sport applications. The Four Seasons 20145SK is also referenced for Mazda HVAC service where the original system uses the listed filter drier and expansion valve configuration.

Common Repair Uses

• Replacing worn A/C service components during compressor repair
• Addressing refrigerant leaks at O-rings, gaskets, or valve connections
• Restoring proper refrigerant metering through the expansion valve
• Replacing a contaminated or restricted filter drier
• Servicing Mazda HVAC systems that use R134a refrigerant

Installation Notes

Verify the vehicle’s refrigerant type, compressor oil specification, and expansion valve style before installation. Replace sealing components during service, and follow the vehicle manufacturer’s evacuation, recharge, and leak-check procedures after assembly. Confirm fitment by model year and build details, especially on 2015 and 2016-2017 Mazda 3 and Mazda 3 Sport applications with listed production notes.

Quality Assurance

Four Seasons backs this kit with a limited lifetime warranty. Use the part number 20145SK to confirm the correct A/C service kit for your Mazda 3, Mazda 3 Sport, Mazda 6, or Mazda CX-5 repair.