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 Komatsu & Kubota 163174A1
SKU:QFS-902-280
Expansion Valve for Komatsu & Kubota 163174A1
Expansion Valve for Case IH, Kobelco, Komatsu replaces OEM numbers 33770-96121, 195-Z11-5711, 17M-911-4710, 163174A1. Kubota. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Case IH Excavator: 9010B, 9020B, 9030B, 9040B, 9050B, 9060B - Replaces OEM Number 163174A1
Fits Kobelco Excavator: SK2500 - Replaces OEM Number ND447500-0210
Fits Komatsu Dozer: D155A-3C, D155A-5C, D155AX-3, D275A-2, D375A-3, D375A-3-01, D375A-3A, D41E-6, D41P-6, D575A-2 and more - Replaces OEM Numbers 17M-911-4710, 195-Z11-5711, ND047500-368, ND447500-0210
Fits Komatsu Excavator: PC1600-1, PC1600SP-1, PC200-6H, PC200LC-6H, PC200LC-6J, PC210-6, PC210LC-6, PC210LC-6G, PC220-6, PC220LC-6 and more - Replaces OEM Numbers 17M-911-4710, 195-Z11-5711, ND447500-0210
Fits Kubota Tractor: M100, M105, M105S, M108, M110, M110DTC, M110FC, M110XDTC, M120, M125 and more - Replaces OEM Number 33770-96120
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu & Fendt 3904313M1
SKU:QFS-903-720
Expansion Valve for Komatsu & Fendt 3904313M1
Expansion Valve for Agco/Allis, Caterpillar, Fendt replaces OEM numbers 3904313M1, 4289594M1, F931.812.140.320, ND447500-1030. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Agco/Allis Tractor: DT205B, DT225B, DT250B, DT275B, LT70, LT85 - Replaces OEM Numbers 3904313M1, 4289594M1
Fits Caterpillar Tractor: MT425, MT445, MT455, MT465, MT645C, MT645D, MT655C, MT655D, MT665C, MT665D and more - Replaces OEM Numbers 3904313M1, 4289594M1
Fits Fendt Tractor: 819 Vario, 819 Vario TMS, 822 Vario, 822 Vario TMS, 824 Vario, 824 Vario TMS, 826 Vario, 826 Vario TMS, 828 Vario, 828 Vario TMS and more - Replaces OEM Number F931.812.140.320
Fits Komatsu Dozer: WD600-3, WD900-3 - Replaces OEM Number ND447500-1030
Fits Komatsu Dump Truck: HD785-5, HD985-5 - Replaces OEM Number ND447500-1030
Fits Komatsu Excavator: PC1100-6, PC1100LC-6, PC1100SP-6, PC1800-6, PC200-6H, PC200LC-6H, PC200LC-6J, PC200SC-6, PC210-6, PC210LC-6 and more - Replaces OEM Number ND447500-1030
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu TW7003-0070
SKU:QFS-902-231
Expansion Valve for Komatsu TW7003-0070
Expansion Valve for Komatsu replaces OEM numbers 31134-25, TW7003-0070. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Carrier: CD110R-1, CD60R-1A, CD60R-1B - Replaces OEM Number TW7003-0070
Fits Komatsu Dozer: D20A-7M, D20A-8, D20P-7A-M, D20P-8, D20PL-7-M, D20PL-8, D20PLL-7-M, D20PLL-8, D21A-7-M, D21A-8 and more - Replaces OEM Number TW7003-0070
Fits Komatsu Excavator: PC100-6, PC100L-6, PC120-6, PC120-6H, PC120-6J, PC120-6S, PC120-6Z, PC128US-1, PC128US-2, PC128UU-1 and more - Replaces OEM Number TW7003-0070
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu TW503714-0830
SKU:QFS-902-297
Expansion Valve for Komatsu TW503714-0830
Expansion Valve for Komatsu replaces OEM number TW503714-0830. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Dump Truck: HD255-5 - Replaces OEM Number TW503714-0830
Fits Komatsu Excavator: PC120-6, PC120-6Z, PC120LC-6E0, PC130-6, PC200LC-6Z, PC220LC-6Z, PC300-6, PC400LC-6 - Replaces OEM Number TW503714-0830
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu ND447500-3750
SKU:QFS-903-877
Expansion Valve for Komatsu ND447500-3750
Expansion Valve for Komatsu replaces OEM number ND447500-3750. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Dozer: D65EX-17 - Replaces OEM Number ND447500-3750
Fits Komatsu Dump Truck: HM300-3, HM400-3 - Replaces OEM Number ND447500-3750
Fits Komatsu Excavator: PC210LC-10, PC240LC-10, PC290LC-10, PC360LC-10, PC390LC-10, PC390LC-7 - Replaces OEM Number ND447500-3750
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu ND447500-0260
SKU:QFS-902-296
Expansion Valve for Komatsu ND447500-0260
Expansion Valve for Komatsu replaces OEM number ND447500-0260. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Wheel Loader: WA180-3, WA250-3 - Replaces OEM Number ND447500-0260
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Komatsu ND447500-0180
SKU:QFS-902-295
Expansion Valve for Komatsu ND447500-0180
Expansion Valve for Komatsu replaces OEM numbers ND447500-0180, E007517894D1. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Komatsu Dozer: D155AX-5, D31EX-21, D31EX-21A-M, D31PX-21, D31PX-21A, D37EX-21, D37EX-21A, D37EX-21A-M, D37PX-21, D37PX-21A and more - Replaces OEM Number ND447500-0180
Fits Komatsu Excavator: PC200-6H, PC200LC-6, PC200LC-6H, PC200LC-6J, PC220-6, PC220LC-6, PC230-6, PC230LC-6 - Replaces OEM Number ND447500-0180
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere KV22928
SKU:QFS-903-748
Expansion Valve for John Deere KV22928
Expansion Valve for John Deere replaces OEM number KV22928. 1/4" Mounting Holes R12 and R134a Compatible. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Skidsteer: 240, 240-II, 250, 250-II, 260, 270, 280, 317, 320, 325 and more - Replaces OEM Number KV22928
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere AT62543
SKU:QFS-902-219
Expansion Valve for John Deere AT62543
Expansion Valve replaces OEM number AT62543. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere AT487587
SKU:QFS-903-7146
Expansion Valve for John Deere AT487587
Expansion Valve for John Deere replaces OEM number AT487587. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Skidsteer: 316GR, 317G, 318E, 318G, 319E, 323E, 324G, 325G, 330G, 331G and more - Replaces OEM Number AT487587
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for John Deere AL203088
SKU:QFS-903-714
Expansion Valve for John Deere AL203088
Expansion Valve for John Deere replaces OEM number AL203088. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits John Deere Combine: S550, S650, S660, S670, S680, S680 EURO, S680HM EURO, S685 EURO, S685HM EURO, S690 and more - Replaces OEM Number AL203088
Fits John Deere Forage Harvester: 8100, 8200, 8300, 8400, 8500, 8600, 8700, 8800 - Replaces OEM Number AL203088
Fits John Deere Sugar Cane Harvester: CH570, CH670 - Replaces OEM Number AL203088
Fits John Deere Swather: W235, W260 - Replaces OEM Number AL203088
Please verify the OEM reference number and equipment fitment before ordering.
AP Air
Expansion Valve for Massey Ferguson ACW0214330
SKU:QFS-903-713
Expansion Valve for Massey Ferguson ACW0214330
Expansion Valve for Massey Ferguson replaces OEM number ACW0214330. Built for reliable replacement performance, this part is a strong option for restoring proper cab comfort and equipment function.
Fits Massey Ferguson Tractor: 4707, 4708, 4709, 4710, 5709, 5710, 5711, 6711, 6712, 6713 - Replaces OEM Number ACW0214330
Please verify the OEM reference number and equipment fitment before ordering.