When the sun is up and the field work can't wait, your tractor cab becomes one of the most demanding work environments on the farm. Without proper AC, internal cab temperatures can exceed 100°F — creating real risks of heat exhaustion, dehydration, and costly operator mistakes during your most critical windows.
Our Air Conditioning Conversion Kits are built to solve that — without the price tag of a new machine.
❄️ R12 to R134a Refrigerant Conversion — If your tractor runs on R12, it's time to convert. Our kits include all necessary seals, hoses, and dryers to bring your system up to the modern R134a standard — legally and affordably.
🏗️ Complete Retrofit Kits — No AC at all? We carry full roof-mounted and interior evaporator systems with condensers and all plumbing needed to build climate control from scratch in an open cab.
Why It Matters Beyond Comfort
AP Air
Air Conditioning Conversion Kit for John Deere 4230, 4240, 4430, 4440 - Sanden Style, 990-403K
QFS-990-403K
Ditch the aging A6 compressor and upgrade your John Deere tractor to a modern Sanden-style A/C system with this complete, all-in-one conversion kit from AP Air. Everything you need for a clean, reliable installation is included — no sourcing individual parts.
What's Included (SKU: QFS-990-403K)
- Sanden-Style Compressor Conversion Kit (990-403) — replaces the original A6 piston compressor with a lightweight, efficient rotary unit
- Receiver Drier — new desiccant to keep moisture out of the system
- Expansion Valve — controls refrigerant flow for optimal cooling performance
- O-Ring Kit — all seals needed for a leak-free installation
Designed to use your original belt and hoses — no custom fabrication or hose rerouting required.
Compatible John Deere Models
- John Deere 4040 & 4040 Euro
- John Deere 4230
- John Deere 4240, 4240 Euro & 4240S
- John Deere 4350
- John Deere 4430
- John Deere 4440
- John Deere 7720
- And more — contact us to confirm fitment on your specific model
Why Upgrade from the A6 Compressor?
The original A6 piston compressor is heavy, inefficient, and increasingly difficult to find parts for. The Sanden rotary compressor offers:
- Less engine load — lighter weight means less parasitic drag
- Better cooling efficiency — especially at low RPMs during field work
- R134a compatibility — works with the modern, readily available refrigerant standard
- Widely serviceable — any shop with modern A/C equipment can service a Sanden system
Installation Notes
- Flush the system before installing to remove residual mineral oil from the old A6 system
- Use PAG oil specified for the Sanden compressor — do not mix with old mineral oil
- Replace all O-rings with HNBR (green) O-rings rated for R134a (included in kit)
- Have the system professionally evacuated and recharged with R134a refrigerant
AP Air
Air Conditioning R134 Conversion Kit for John Deere 4040, 4230, 4240, 4430, 4440 - 990-4212
SKU:QFS-990-4212
Fits John Deere 4040, 4040 Euro, 4230, 4240, 4240 Euro, 4240S, 4430, 4440, 4440 Euro, and more
- Includes Compressor, 10 Piece Hose Kit, Receiver Drier, Expansion Valve and O-Rings
- Does Not Include Quick Couplers - Must Reuse Originals or Buy New
AP Air
Air Conditioning Conversion Kit for John Deere 4040, 4230, 4240, 4430 - A6 to Sanden, 990-404K
SKU:QFS-990-404K
Replace your aging A6 compressor with a modern Sanden-style A/C system using this complete conversion kit from AP Air. The 990-404K covers one of the broadest fitment ranges in the John Deere lineup — spanning both classic row-crop tractors and large combines — and includes everything needed for a clean, reliable installation.
What's Included (SKU: QFS-990-404K)
- Sanden-Style Conversion Kit — replaces the original A6 piston compressor with a lightweight, efficient rotary unit
- Receiver Drier — new desiccant to keep moisture out of the system
- Expansion Valve — controls refrigerant flow for optimal cooling performance
- O-Ring Kit — all seals needed for a leak-free, R134a-compatible installation
Designed to use your original belt and hoses — no custom fabrication or hose rerouting required.
Compatible John Deere Models
Combines:
- John Deere 6620
- John Deere 7720
Tractors:
- John Deere 4040 & 4040 Euro
- John Deere 4230
- John Deere 4240, 4240 Euro & 4240S
- John Deere 4350
- John Deere 4430
- John Deere 4440 & 4440 Euro
- John Deere 4630
- John Deere 8430 4WD
- John Deere 8440
- John Deere 8630
- John Deere 8640
Why Upgrade from the A6 Compressor?
The original A6 piston compressor is heavy, inefficient, and increasingly difficult to find parts for. The Sanden-style rotary compressor offers:
- Less engine load — lighter weight means less parasitic drag
- Better cooling efficiency — especially at low RPMs during field work
- R134a compatibility — works with the modern, readily available refrigerant standard
- Widely serviceable — any shop with modern A/C equipment can service a Sanden-style system
Installation Notes
- Flush the system before installing to remove residual mineral oil from the old A6 system
- Use PAG oil specified for the Sanden compressor — do not mix with old mineral oil
- Replace all O-rings with HNBR (green) O-rings rated for R134a (included in kit)
- Have the system professionally evacuated and recharged with R134a refrigerant
AP Air
Air Conditioning Conversion Kit for International 1066, 1086 and more - York to Sanden, 990-3572K
SKU:QFS-990-3572K
Replace your aging York compressor with a modern Sanden-style A/C system using this complete conversion kit from AP Air. The 990-3572K covers one of the widest International fitment ranges available — spanning both classic row-crop tractors and combines — with everything needed for a professional, leak-free installation.
What's Included (SKU: QFS-990-3572K)
- Sanden Conversion Kit (990-357) — replaces the original York piston compressor with a lightweight, efficient rotary unit
- Receiver Drier — new desiccant to eliminate moisture from the system
- Expansion Valve — controls refrigerant flow for optimal cab cooling performance
- Service Valve Kit — retrofit charge port adapters so modern R134a service equipment can connect to the system; also serves as a visual indicator the conversion is complete
- O-Ring Kit — all seals required for a complete, R134a-compatible installation
Compatible International Models
Combines:
- International 1440
- International 1460
- International 1470
- International 1480
Tractors:
- International 100 Hydro
- International 766
- International 786
- International 886
- International 966
- International 986
- International 1066
- International 1086
- International 1466
- International 1486
- International 1566
- International 1586
- International 186 Hydro
- International 4166
- International 4186
Why Upgrade from the York Compressor?
The original York piston compressor is heavy, inefficient, and parts are increasingly scarce. The Sanden rotary compressor offers:
- Less engine load — lighter weight means less parasitic drag
- Better cooling efficiency — especially at low RPMs during field work
- R134a compatibility — works with the modern, readily available refrigerant standard
- Widely serviceable — any shop with modern A/C equipment can service a Sanden system
Installation Notes
- Flush the system thoroughly before installing to remove residual mineral oil from the original York compressor
- Use PAG oil specified for the Sanden compressor — do not mix with old mineral oil
- Replace all O-rings with HNBR (green) O-rings rated for R134a (included in kit)
- Install the included service valve adapters to enable R134a service equipment connection
- Have the system professionally evacuated and recharged with R134a refrigerant
AP Air
Air Conditioning Conversion Kit for International 1086, 1486, 1586, 786, 886, 986 - York to Sanden, 990-3571K
SKU:QFS-990-3571K
Includes 990-357 Kit, Receiver Drier, Expansion Valve, and Service Valve Kit
AP Air
Air Conditioning Update Kit for International 1086, 1486, 1586, 786, 886, 986 - 990-3586
SKU:QFS-990-3586
Includes Sanden Conversion Kit, OEM Style Lines with Quick Coupler, Condenser, Evaporator, Pressure Switches and Thermostatic Switch
AP Air
Air Conditioning Conversion Kit for John Deere 2950, 2955, 3040 and more - A6 to Sanden, 990-400
SKU:QFS-990-400
Fits John Deere 2950, 2955, 3040, 3050 Euro, 3140, 3150, 3155, 3350 Euro, 3650 Euro
-
Replaces A6 Compressor
Kit allows for the use of the original hoses and belt
AP Air
Air Conditioning Conversion Kit for International 3488, 3688, 5088, 5288 - York to Sanden
SKU:QFS-990-3528
Fits International 3488, 3688, 5088, 5288
- Allows the Use of Original Belt
- Includes OE Sanden Compressor, All Hoses, Drier, Expansion Valve and Roof Foam
AP Air
Air Conditioning Conversion Kit for Allis Chalmers 7030, 7040, 7050, 7060, 7080 - 990-0086
SKU:QFS-990-0086
Fits 7030, 7040, 7050, and 7060, 7080 Red Frame Agco/Allis Tractors
Includes Compressor Kit, Hoses, O-Rings, Expansion Valve and Receiver Drier
Must Re-Use Original Backseat Service Valve
AP Air
Air Conditioning Conversion Kit for John Deere 2950, 2955, 3155 - A6 to Sanden Style
SKU:QFS-990-400AP
Fits 2950, 2955, 3040, 3050 Euro, 3140, 3150, 3155, 3350 Euro, 3650 Euro John Deere Tractors
Kit allows for the use of the original hoses and belt
AP Air
Complete Air Conditioning Update Kit for John Deere, 990-5046
SKU:QFS-990-5046
Includes Sanden Conversion Kit, All Rubber Hoses, Switches, High Efficiency Condenser, Evaporator, Expansion Valve, Receiver Drier and Foam Pieces
AP Air
Complete Air Conditioning Update Kit for John Deere 4240, 4440
SKU:QFS-990-5040
Fits John Deere 4240, 4240 Euro, 4240S, 4440, 4440 Euro
Includes Sanden Conversion Kit, 6 Piece All Rubber Hose Kit, Switches, High Efficiency Condenser and Evaporator, Expansion Valve, Receiver Drier and Foam Pieces