Four Seasons 20111SK A/C Compressor Replacement Service Kit

Four Seasons A/C Service Kit for Nissan and INFINITI

The Four Seasons 20111SK A/C Installer Kit is built for air conditioning service on select Nissan and INFINITI vehicles. It combines the core replacement components needed for a compressor-related A/C repair, including a filter drier, expansion valve, PAG 46 compressor oil, O-ring/gasket pack, and cap and valve kit.

As part of the Four Seasons A/C Installer Kits line, this service kit is organized for compressor replacement work where the system needs matched service components and refrigerant-side sealing parts. It is specified for R134a systems and uses a block-type expansion device with O-ring inlet and outlet connections.

Key Features

• Four Seasons part number 20111SK
• A/C compressor replacement service kit for R134a systems
• Includes compressor oil: PAG Oil / 46
• Includes filter drier, expansion valve, O-ring/gasket pack, and cap and valve kit
• Block-type expansion device with O-ring inlet and outlet connections
• Receiver drier/accumulator dimensions: 1.625 in. diameter, 9.125 in. length
• Pad mount outlet fitting size: .402 in.
• Limited lifetime warranty

Detailed Description

Four Seasons 20111SK is an A/C compressor replacement service kit for select Nissan 370Z, Altima, Maxima, Rogue, Rogue Select, Quest, and INFINITI Q40, Q50, Q60, QX50, QX70, EX35, EX37, FX35, FX37, G25, and G37 applications. It is built around the service parts commonly replaced during compressor work, helping restore the refrigerant circuit with the correct oil type and sealing components for the listed vehicles.

This kit uses PAG 46 compressor oil and is configured for R134a refrigerant systems. The included expansion valve is a block type with O-ring inlet and outlet connections, and the kit also includes a filter drier plus the necessary O-rings and gaskets for the application. This makes the Four Seasons 20111SK a practical choice when servicing the A/C system on a 2011-2019 Nissan 370Z or a 2013-2017 Nissan Quest, as well as other listed Nissan and INFINITI models.

This part cross-references Monroe Shocks & Struts (e.g., 550554, MUK20176) for the same application.

What It Helps Address

• Compressor replacement service on R134a A/C systems
• Loss of cooling after A/C component replacement
• Refrigerant leaks at O-ring or gasket sealing points
• Restricted flow through a worn expansion valve or filter drier
• Incorrect oil type during A/C compressor service

Installation Notes and Tips

Verify vehicle-specific fitment before installation, especially on 2016 Nissan Altima applications noted as to 8/15 and 2013-2017 Nissan Quest front kit applications. Replace the expansion valve, filter drier, and sealing components during compressor service, and use the specified PAG 46 oil for the system. Confirm all O-ring and pad-mount connections are clean and properly seated before evacuating and recharging the system.

Quality Assurance

Four Seasons backs this A/C service kit with a limited lifetime warranty. The 20111SK is part of the Four Seasons A/C Installer Kits line, which groups the service components needed for compressor-related HVAC repair in one application-specific package.

Compatible Vehicles

• Fits 2011-2019 Nissan 370Z, N/A
• Fits 2014-2017 INFINITI QX50, N/A
• Fits 2014-2017 INFINITI QX70, N/A
• Fits 2013-2017 Nissan Quest, N/A
• Fits 2016 Nissan Altima, N/A
• Fits 2016 Nissan Maxima, N/A
• Fits 2015 INFINITI Q40, N/A
• Fits 2014-2015 INFINITI Q50, N/A
• Fits 2014-2015 INFINITI Q60, N/A
• Fits 2013-2015 Nissan Altima, N/A
• Fits 2014-2015 Nissan Rogue, N/A
• Fits 2014-2015 Nissan Rogue Select, N/A
• Fits 2013 INFINITI EX37, N/A
• Fits 2013 INFINITI FX37, N/A
• Fits 2011-2013 INFINITI G37, N/A
• Fits 2012 INFINITI EX35, N/A
• Fits 2011-2012 INFINITI FX35, N/A
• Fits 2011-2012 INFINITI G25, N/A
• Fits 2011-2012 Nissan Quest, N/A