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Description
R134 OE Sanden Conversion Kit for John Deere, 990-4212RUpgrade your John Deere tractor to a factory style Sanden A C system with this OE grade conversion kit from AP Air. The 990 4212R is the premium step up from a standard Sanden conversion built to OE specifications for a cleaner, more reliable installation that closely mirrors how the factory would have done it. What's Included (SKU: QFS 990 4212R) This is a complete, all in one kit. Everything needed for a full A C conversion is in the box: OE Style
Upgrade your John Deere tractor to a factory-style Sanden A/C system with this OE-grade conversion kit from AP Air. The 990-4212R is the premium step up from a standard Sanden conversion — built to OE specifications for a cleaner, more reliable installation that closely mirrors how the factory would have done it.
What's Included (SKU: QFS-990-4212R)
This is a complete, all-in-one kit. Everything needed for a full A/C conversion is in the box:
- OE-Style Sanden Compressor — direct-fit rotary compressor built to original equipment specifications
- Receiver Drier — new desiccant to eliminate moisture from the system
- Expansion Valve — precisely controls refrigerant flow for optimal cab cooling
- O-Ring Kit — all seals required for a leak-free, R134a-compatible installation
Compatible John Deere Models
- John Deere 4040 & 4040 Euro
- John Deere 4230
- John Deere 4240, 4240 Euro & 4240S
- John Deere 4430
- John Deere 4440 & 4440 Euro
- John Deere 4630
OE vs. Standard Sanden Conversion — What's the Difference?
The 990-4212R is built to original equipment specifications, meaning the compressor mounting, porting, and hardware are matched to John Deere's factory design. This results in a cleaner installation with less adaptation required compared to a universal Sanden conversion kit. If you want the closest thing to a factory A/C system using modern R134a components, this is the kit.
Installation Notes
- Flush the system thoroughly before installing to remove residual mineral oil from the original A6 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)
- Have the system professionally evacuated and recharged with R134a refrigerant
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1034 reviews
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Product Reviews
★★★★★ 5
Excellent Office Chair
Color: Black+white, Size: Pack of 1
I just received my TRALT Office Chair. First of all, I was impressed with the packaging of this item. When I opened the box each piece of the chair was wrapped in plastic or bubble wrap. Everything in the box arrived safely and without damage. Secondly, the instructions to assemble the chair were very each to follow. I was impressed with the Allen wrench which had a handle attached to it. This made screwing in the screws very easy. I was able to assemble the chair without any difficulty. Lastly, the look of the chair and the comfort is exceptional. I ordered the black/white chair which looks amazing. The comfort of the chair is really excellent. My back is supported by the lumbar seat and having the armrests being able to go up when not needed is wonderful. The quality of the chair is definitely worth the price.
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Reviewed in the United States on May 9, 2026
★★★★★ 4
a good choice
Color: Black, Size: Pack of 1, Color: Black, Size: Pack of 1
Assembled chair only to find that the lift cylinder was faulty. Would have preferred to be able to just get a replacement cylinder but calling China didn't seem like a viable option. Guessing which one & buying it online would involve paying for a good portion of what the chair cost. Customer service could only offer a replacement or refund. We're disassembling (so much fun?!) to send it back. The chair itself was very comfortable, assembled fairly easily and instructions pretty clear. Again, if we could only have asked the seller for the replacement part......**Update**...Or if the instructions that seemed so clear were clearer!, as we started to disassemble, we decided to see what would happen if the tension knob (see photo) was loosened. IT ALLOWED THE LIFT CYLINDER TO WORK. Not at all what the instructions say. At any rate, we're keeping the chair.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
This chair is amazing
Color: Sky Blue, Size: Pack of 1, Color: Sky Blue, Size: Pack of 1
⭐⭐⭐⭐⭐
Absolutely love this chair! It was super easy to assemble—I had it set up in no time with clear instructions and minimal effort. The comfort level is fantastic; the seat cushion is just right and the back support makes it great for longer sitting sessions.
The color is beautiful in person—clean, modern, and adds a fresh pop to the room without being overwhelming. I also really like the smooth wheels and sturdy build; it feels stable and well-made.
Overall, this is a great combination of style, comfort, and value. Highly recommend!
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Excellent Ergonomic Chair
Color: Black, Size: Pack of 1
I am incredibly impressed with this chair. The setup was a breeze and took me less than 20 minutes from start to finish. It is exceptionally comfortable, offering fantastic ergonomic support that keeps my back pain-free during long hours of sitting. The materials feel premium and highly durable. Plus, the included 5-year warranty is incredibly helpful and provides great peace of mind. I highly recommend it to anyone looking for a reliable workspace upgrade!
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Comfortable, Sturdy, and Great for Long Hours
Color: Black, Size: Pack of 1
I am very happy with this office chair. It was easy to assemble, feels sturdy, and is very comfortable to sit in for long periods of time. The ergonomic design provides good back support, and the adjustable features make it easy to find the perfect position. The mesh back keeps me cool throughout the day, and the chair rolls smoothly. Overall, it offers great quality for the price and has made working at my desk much more comfortable. I would definitely recommend it to anyone looking for a reliable office chair. ⭐⭐⭐⭐⭐
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Reviewed in the United States on May 30, 2026