Agricultural & Heavy Equipment AC Expansion Valves
The expansion valve is the precision metering device at the heart of your AC system's cooling performance. It controls exactly how much refrigerant flows into the evaporator, maintaining the precise pressure differential that allows the system to absorb heat from your cab and deliver cold air. When it's working correctly, you don't notice it. When it fails, your AC system suffers — and so does your compressor.
Quality Farm Supply stocks expansion valves for a wide range of tractors, combines, skid steers, and heavy equipment — direct-fit replacements built to OEM specifications.
How a Failing Expansion Valve Affects Your System
- Restricted flow — a clogged or stuck-closed valve starves the evaporator of refrigerant, resulting in poor cooling and compressor overload
- Uncontrolled flow — a stuck-open valve floods the evaporator, causing liquid refrigerant to reach the compressor and causing serious damage
- Contamination damage — debris and moisture from a failed compressor or saturated receiver drier can clog or corrode the valve's precision internals
When to Replace Your Expansion Valve
- Compressor failure — metal debris from an internally failed compressor travels downstream and can damage the expansion valve
- Poor cooling with no obvious cause — a malfunctioning expansion valve is a common culprit when the system is charged but not cooling properly
- Complete AC overhaul — replacing the expansion valve alongside the compressor, receiver drier, and O-rings ensures the new system starts clean
- R134a conversion — some R12-era expansion valves are not compatible with R134a and should be replaced during conversion
For a complete system refresh, pair your new expansion valve with a compressor, condenser, receiver drier, and full O-ring set — or shop our complete AC overhaul kits for everything in one order.
AP Air
Expansion Valve-Externally Equalized for Mahindra-Montana A1865030, TY, 902-284
SKU:QFS-902-284
Expansion Valve-Externally Equalized for Mahindra-Montana A1865030, TY
Expansion Valve-Externally Equalized for Mahindra, Montana, TYM replaces OEM numbers A1865030, 14528303000. Chrysler, Isuzu, Mazda, Nissan, Subaru Coil Type, R12 & R134a Compatible. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Mahindra Tractor: 2565, 5010, 6110
Fits Montana Tractor: 5720, 5720C, 5740, 5740C, L4340, L4940 - Replaces OEM Number A1865030
Fits TYM Tractor: T1003, T723, T903 - Replaces OEM Number 14528303000
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere 4475690, 902-291
SKU:QFS-902-291
Expansion Valve for John Deere 4475690
Expansion Valve for John Deere replaces OEM number 4475690. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Excavator: 135C RTS, 135D, 225CLC RTS, 225DLC, 75C, 75D, 80C, 85D - Replaces OEM Number 4475690
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Receiver Drier to Expansion Valve-Drier End for Case IH 47461059 84471, 7-47461059
SKU:QFS-7-47461059
Receiver Drier to Expansion Valve-Drier End for Case IH 47461059 84471
Receiver Drier to Expansion Valve-Drier End for Case IH, Ford/New Holland replaces OEM numbers 47461059, 84471417. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Case IH Tractor: Quadtrac 370, Quadtrac 420, Rowtrac 350, Rowtrac 370, Rowtrac 400, Rowtrac 420, Rowtrac 500, Steiger 350, Steiger 370, Steiger 400 and more - Replaces OEM Numbers 47461059, 84471417
Fits Ford/New Holland Tractor: T9.390, T9.435, T9.450, T9.480, T9.505, T9.530, T9.560, T9.565, T9.615 - Replaces OEM Numbers 47461059, 84471417
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Receiver Drier to Expansion Valve for John Deere AH127684, 7-127684
SKU:QFS-7-127684
Receiver Drier to Expansion Valve for John Deere AH127684
Receiver Drier to Expansion Valve for John Deere replaces OEM number AH127684. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Combine: 9400, 9410, 9450, 9500, 9500SH, 9510, 9510SH, 9540, 9550, 9550SH and more - Replaces OEM Number AH127684
Fits John Deere Cotton Picker: 9986, 9996 - Replaces OEM Number AH127684
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve-Block Type for John Deere AH222255, 903-722
SKU:QFS-903-722
Expansion Valve-Block Type for John Deere AH222255
Expansion Valve-Block Type for John Deere replaces OEM number AH222255. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Combine: 9560i STS Euro, 9660STS, 9760 STS - Replaces OEM Number AH222255
Fits John Deere Swather: A400 - Replaces OEM Number AH222255
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere UC17009, 903-867
SKU:QFS-903-867
Expansion Valve for John Deere UC17009
Expansion Valve for John Deere replaces OEM number UC17009. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Utility Vehicle: XUV835, XUV865 - Replaces OEM Number UC17009
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Kubota RD451-93740, 903-824
SKU:QFS-903-824
Expansion Valve for Kubota RD451-93740
Expansion Valve for Kubota replaces OEM number RD451-93740. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Kubota Excavator: KX040-4, KX080-4, U55-4 - Replaces OEM Number RD451-93740
Fits Kubota Wheel Loader: R630 - Replaces OEM Number RD451-93740
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Kubota RD579-93750, 903-7212
SKU:QFS-903-7212
Expansion Valve for Kubota RD579-93750
Expansion Valve for Kubota replaces OEM number RD579-93750. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Kubota Skid Steer Loader: SVL75-2C, SVL75C, SVL90-2C, SVL90C, SVL95-2SC - Replaces OEM Number RD579-93750
Fits Kubota Tractor: M7-132, M7-152, M7-172 - Replaces OEM Number RD579-93750
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere AT469774, 903-842
SKU:QFS-903-842
Expansion Valve for John Deere AT469774
Expansion Valve for John Deere replaces OEM number AT469774. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Crawler: 1050K, 450K, 605K - Replaces OEM Number AT469774
Fits John Deere Sprayer: 400R, 408R, 410R, 412R, 600R, 612R, 616R, 800R - Replaces OEM Number AT469774
Fits John Deere Tractor: 7R 210, 7R 230, 7R 250, 7R 270, 7R 290, 7R 310, 7R 330, 7R 350, 8R 230, 8R 250 and more - Replaces OEM Number AT469774
Fits John Deere Wheel Loader: 444K, 524K, 544K - Replaces OEM Number AT469774
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Kioti T4145-87841, 903-845
SKU:QFS-903-845
Expansion Valve for Kioti T4145-87841
Expansion Valve for Kioti replaces OEM number T4145-87841. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Kioti Tractor: RX6010, RX6010PC, DK45SE - Replaces OEM Number T4145-87841
Please verify the OEM reference number and equipment fitment before ordering.