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 for Kubota 6A671-75040
SKU:QFS-903-721
Expansion Valve for Kubota 6A671-75040
Expansion Valve for Kubota replaces OEM number 6A671-75040. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Kubota Excavator: KX080-3, KX121, KX121-3, KX161-3 - Replaces OEM Number 6A671-75040
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere & Hitachi 4464354
SKU:QFS-903-758
Expansion Valve for John Deere & Hitachi 4464354
Expansion Valve for Hitachi, John Deere replaces OEM number 4464354. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Hitachi Excavator: ZX330LC - Replaces OEM Number 4464354
Fits John Deere Excavator: 200CLC, 210CW, 230CLC, 270CLC, 330C LC, 370C - Replaces OEM Number 4464354
Fits John Deere Forestry Swing Machine: 2154D, 2454D, 2954D, 3754D - Replaces OEM Number 4464354
Fits John Deere Log Loader: 2054, 2154 - Replaces OEM Number 4464354
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Massey Ferguson & Caterpillar 4353427M1
SKU:QFS-903-7152
Expansion Valve for Massey Ferguson & Caterpillar 4353427M1
Expansion Valve for Caterpillar, Massey Ferguson replaces OEM numbers 4353427M1, A.310.016.00. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Caterpillar Tractor: MT645D, MT655D, MT665E, MT675D, MT685D, MT685E - Replaces OEM Number 4353427M1
Fits Massey Ferguson Tractor: 8660, 8670, 8680, 8690, 8727, 8730, 8732, 8735, 8737 - Replaces OEM Number 4353427M1
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu 425-963-AC20
SKU:QFS-903-855
Expansion Valve for Komatsu 425-963-AC20
Expansion Valve for Komatsu replaces OEM number 425-963-AC20. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Wheel Loader: WA450-2 - Replaces OEM Number 425-963-AC20
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu 37A-942-2170
SKU:QFS-903-875
Expansion Valve for Komatsu 37A-942-2170
Expansion Valve for Komatsu replaces OEM number 37A-942-2170. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Skidsteer: CK30-1, CK35-1, SK1020-5N - Replaces OEM Number 37A-942-2170
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu 205-979-7070
SKU:QFS-902-294
Expansion Valve for Komatsu 205-979-7070
Expansion Valve for Komatsu replaces OEM number 205-979-7070. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Excavator: PC200LC-3, PC300LC-3, PC650-5, PC650LC-5, PC650SE-5, PC710-5, PC710SE-5 - Replaces OEM Number 205-979-7070
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Terex 15270348
SKU:QFS-903-704
Expansion Valve for Terex 15270348
Expansion Valve for Terex replaces OEM number 15270348. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Terex Truck: TR35 - Replaces OEM Number 15270348
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Case IH 47994470 - Ford/Holland, 903-847
SKU:QFS-903-847
Expansion Valve for Case IH 47994470 - Ford/Holland
Expansion Valve for Case IH, Ford/New Holland replaces OEM number 47994470. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Case IH Tractor: FARMALL 100N, FARMALL 100V, FARMALL 110CL, FARMALL 80N, FARMALL 80V, FARMALL 90CL, FARMALL 90N, FARMALL 90V, Magnum 180, Magnum 220 and more - Replaces OEM Number 47994470
Fits Ford/New Holland Tractor: T9.565, T9.600 - Replaces OEM Number 47994470
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Bobcat 7354054, 903-849
SKU:QFS-903-849
Expansion Valve for Bobcat 7354054
Expansion Valve for Bobcat replaces OEM number 7354054. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Bobcat Skid Steer Loader: S62, S64, S66, S76, S86, T62, T64, T66, T76, T86 - Replaces OEM Number 7354054
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Case IH 90389899, 903-846
SKU:QFS-903-846
Expansion Valve for Case IH 90389899
Expansion Valve for Case IH replaces OEM number 90389899. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Case IH Sprayer: PATRIOT 4450 - Replaces OEM Number 90389899
Fits Case IH Tractor: MAGNUM 295, Magnum 180, Magnum 200, Magnum 220, Magnum 240, Magnum 250, Magnum 280, Magnum 310, Magnum 310 Rowtrac, Magnum 340 and more - Replaces OEM Number 90389899
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Can 0972008 2X06120 705800458 T26-2332, 903-861
SKU:QFS-903-861
Expansion Valve for Can 0972008 2X06120 705800458 T26-2332
Expansion Valve for Can replaces OEM numbers 705800458, 0972008, 2X06120, T26-2332. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Can Am: Utility Vehicle-DEFENDER 1000 HD10, Utility Vehicle-DEFENDER 800 HD8 - Replaces OEM Numbers 0972008, 2X06120, 705800458, T26-2332
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Ford/Holland 47929897, 903-7191
SKU:QFS-903-7191
Expansion Valve for Ford/Holland 47929897
Expansion Valve for Ford/New Holland replaces OEM number 47929897. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Ford/New Holland Backhoe: B110C, B90B, B95B, B95BTC, B95C - Replaces OEM Number 47929897
Please verify the OEM reference number and equipment fitment before ordering.