Part number lookup

KX121-3 Replacement Parts

Cross-reference and compare 40 replacement listings for OEM / aftermarket part number KX121-3. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.

40 Matching Products

Air Cleaner Assy RD411-42200 for Kubota KX057 KX121 KX161 U45 U48 U55 ExcavatorKubotaAir Cleaner Assy RD411-42200 for Kubota KX057 KX121 KX161 U45 U48 U55 Excavator$207.99Coupling Assembly RC411-42630 RP471-42630 for Kubota Excavator KX033-4 KX121-3 KX71-3 KX91-3 U35KubotaCoupling Assembly RC411-42630 RP471-42630 for Kubota Excavator KX033-4 KX121-3 KX71-3 KX91-3 U35$115.99Maintenance Filter Kit for Kubota KX121-3 Mini ExcavatorKubotaMaintenance Filter Kit for Kubota KX121-3 Mini Excavator$148.00Over flow Pipe Injector Return Pipe 16454-42502 for Kubota V1903 V2003T V2203 V2403 EngineKubotaOver flow Pipe Injector Return Pipe 16454-42502 for Kubota V1903 V2003T V2203 V2403 Engine$70.29Thermostat Housing Cover 15321-73260 for Kubota Excavator KX040 KX101 Tractor L235 L245KubotaThermostat Housing Cover 15321-73260 for Kubota Excavator KX040 KX101 Tractor L235 L245$59.991 Set Main Bearing 1A091-23480 1A091-23482 for Kubota D1803 MDI EngineKubota1 Set Main Bearing 1A091-23480 1A091-23482 for Kubota D1803 MDI Engine$125.0418Pcs Cylinder Head Bolt 19013-03450 for Kubota Engine V2403 V2203 V2003Kubota18Pcs Cylinder Head Bolt 19013-03450 for Kubota Engine V2403 V2203 V2003$134.00A/C Condenser T1065-72220 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U50-3KubotaA/C Condenser T1065-72220 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U50-3$526.13A/C Expansion Valve 6A671-75040 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U45S U45STKubotaA/C Expansion Valve 6A671-75040 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U45S U45ST$101.00A/C Expansion Valve 6A671-75040 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U45S U45STKubotaA/C Expansion Valve 6A671-75040 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U45S U45ST$88.00Bottom Roller RD118-21700 for Kubota Excavator KX121-3 KX040-4KubotaBottom Roller RD118-21700 for Kubota Excavator KX121-3 KX040-4$130.00Connecting Rod 17311-22010 17311-22012 for Kubota V1500 V1702DI V1902DI V2003-T Engine KX121-2 KX121-3 KX161-2 KX161-3 KX91-3KubotaConnecting Rod 17311-22010 17311-22012 for Kubota V1500 V1702DI V1902DI V2003-T Engine KX121-2 KX121-3 KX161-2 KX161-3 KX91-3$155.64Connecting Rod Bearing 17311-22310 17311-22312 for Kubota D1803 MDI EngineKubotaConnecting Rod Bearing 17311-22310 17311-22312 for Kubota D1803 MDI Engine$88.05Cylinder Head Cover Gasket 1G911-14520 for Kubota Tractor L4300DT L4330DT L4630DTKubotaCylinder Head Cover Gasket 1G911-14520 for Kubota Tractor L4300DT L4330DT L4630DT$62.87Evaporator 6A671-75030 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U45S U45STKubotaEvaporator 6A671-75030 for Kubota Excavator KX080-3 KX121-3 KX161-3 U45-3 U45S U45ST$210.00Exhaust Gasket Set 1A091-12350 1A091-12360 for Kubota Engine V1902 V2003 V2203 V2403KubotaExhaust Gasket Set 1A091-12350 1A091-12360 for Kubota Engine V1902 V2003 V2203 V2403$54.30Front Idler RD158-21302 RD118-21300 RD148-21300 for Kubota Excavator KX121-3ST KX121-3 KX040-4 KX033-4KubotaFront Idler RD158-21302 RD118-21300 RD148-21300 for Kubota Excavator KX121-3ST KX121-3 KX040-4 KX033-4$458.00Fuel Filter RA211-51280 for Kubota KX41-3 KX71-3 KX91-3 KX121-3 KX161-3 U35-3 R420S R520S Engine D1005 D1105 V2203 V2403KubotaFuel Filter RA211-51280 for Kubota KX41-3 KX71-3 KX91-3 KX121-3 KX161-3 U35-3 R420S R520S Engine D1005 D1105 V2203 V2403$59.90Fuel Injection Pump 1G787-51010 for Kubota Engine V2203 V2403 Excavator KX121-3 KX161-3 U45S Loader R520SKubotaFuel Injection Pump 1G787-51010 for Kubota Engine V2203 V2403 Excavator KX121-3 KX161-3 U45S Loader R520S$967.99Fuel Stop Solenoid Valve Guide 1A021-56602 for Kubota Engine D1503 D1703 V2203 V2403KubotaFuel Stop Solenoid Valve Guide 1A021-56602 for Kubota Engine D1503 D1703 V2203 V2403$18.00Hydraulic Filter RD401-61270 for Kubota Excavator KX121-3 KX161-3 KX71-3KX91-3 U25S U27-4 U35 U35-4 U35S U35-S2 U45S U45STKubotaHydraulic Filter RD401-61270 for Kubota Excavator KX121-3 KX161-3 KX71-3KX91-3 U25S U27-4 U35 U35-4 U35S U35-S2 U45S U45ST$15.00Hydraulic Oil Cooler RD411-64050 RD411-64052 for Kubota Excavator KX121-3 KX161-3 U45-3 Loader Backhoe M59 M62KubotaHydraulic Oil Cooler RD411-64050 RD411-64052 for Kubota Excavator KX121-3 KX161-3 U45-3 Loader Backhoe M59 M62$848.95Hydraulic Pump Coupling Assembly for Kubota KX55 Sumitomo SH55 Yanmar ViO27-5 ViO55 ExcavatorKubotaHydraulic Pump Coupling Assembly for Kubota KX55 Sumitomo SH55 Yanmar ViO27-5 ViO55 Excavator$101.00Hydraulic Pump Coupling Assembly for Kubota KX55 Sumitomo SH55 Yanmar ViO27-5 ViO55 ExcavatorKubotaHydraulic Pump Coupling Assembly for Kubota KX55 Sumitomo SH55 Yanmar ViO27-5 ViO55 Excavator$100.00Hydraulic Pump PSVL-42 for Kubota Excavator KX121-3 With Coupling AssemblyKubotaHydraulic Pump PSVL-42 for Kubota Excavator KX121-3 With Coupling Assembly$4,813.94Inlet Manifold Gasket 1A091-11822 for Kubota Engine V1702 V1903 V2003 V2203 V2403KubotaInlet Manifold Gasket 1A091-11822 for Kubota Engine V1702 V1903 V2003 V2203 V2403$54.24Inner Air Filter R2401-42280 for Kubota Excavator KX121 KX057 KX161 Tractor MX5000 MX5100DTKubotaInner Air Filter R2401-42280 for Kubota Excavator KX121 KX057 KX161 Tractor MX5000 MX5100DT$15.00LED Head Lamp 3G710-75910 for Kubota KX41-3 KX71-3 KX91-3 M5700 M6800 M8200 M9000KubotaLED Head Lamp 3G710-75910 for Kubota KX41-3 KX71-3 KX91-3 M5700 M6800 M8200 M9000$178.07Muffler RD411-42403 for Kubota Excavator U45-3 U50-3 KX121-3 KX161-3KubotaMuffler RD411-42403 for Kubota Excavator U45-3 U50-3 KX121-3 KX161-3$390.97Oil Filler Cap for Kubota K-008 KH-007H KH-191 KX040-4 KX121-2 KX161-2 KX41-2 KX41H KX61-2 KX71 KX91-2 KX91-3KubotaOil Filler Cap for Kubota K-008 KH-007H KH-191 KX040-4 KX121-2 KX161-2 KX41-2 KX41H KX61-2 KX71 KX91-2 KX91-3$59.78Oil Pan Gasket Sump 1G780-01620 for Kubota Engine V1903 V2203 V2003 V2403KubotaOil Pan Gasket Sump 1G780-01620 for Kubota Engine V1903 V2203 V2003 V2403$56.71Rear Crankshaft Bushing 19202-23280 for Kubota Engine V2403 Tractor L2050DT L2050FKubotaRear Crankshaft Bushing 19202-23280 for Kubota Engine V2403 Tractor L2050DT L2050F$78.87Sprocket 68658-14430 68651-14430 RD118-14433 RD148-14430 for Kubota Excavator KX101 KX121-2 S Series KX040-4 KX121-3 KX121-3S KX121-3STKubotaSprocket 68658-14430 68651-14430 RD118-14433 RD148-14430 for Kubota Excavator KX101 KX121-2 S Series KX040-4 KX121-3 KX121-3S KX121-3ST$184.00Thumb Cylinder 70091-00096 for Kubota KX121-3 KX91 KX71 U45 U55 U55-4 KX057 KX057-4 Mini ExcavatorsKubotaThumb Cylinder 70091-00096 for Kubota KX121-3 KX91 KX71 U45 U55 U55-4 KX057 KX057-4 Mini Excavators$803.99Top Roller RD411-22900 for Kubota Excavator KX040-4 KX057-4 KX057-5 KX121-3 KX161-3 U45-3KubotaTop Roller RD411-22900 for Kubota Excavator KX040-4 KX057-4 KX057-5 KX121-3 KX161-3 U45-3$167.00Top Roller RD411-22900 for Kubota Excavator KX040-4 KX057-4 KX057-5 KX121-3 KX161-3 U45-3 U45S U55 U55-4 U55-5KubotaTop Roller RD411-22900 for Kubota Excavator KX040-4 KX057-4 KX057-5 KX121-3 KX161-3 U45-3 U45S U55 U55-4 U55-5$199.00Top Roller RD411-22900 for Kubota Excavator KX040-4 KX057-4 KX057-5 KX121-3 KX161-3 U45-3 U45S U55 U55-4 U55-5KubotaTop Roller RD411-22900 for Kubota Excavator KX040-4 KX057-4 KX057-5 KX121-3 KX161-3 U45-3 U45S U55 U55-4 U55-5$170.00Track Adjuster Cylinder RC411-21503 for Kubota Excavator KX040-4 KX121-3 KX91-3 U35 U35-S2KubotaTrack Adjuster Cylinder RC411-21503 for Kubota Excavator KX040-4 KX121-3 KX91-3 U35 U35-S2$546.00Track Adjuster Cylinder RC411-21606 for Kubota Excavator KX040-4 KX121-3 KX91-3 U35 U35-S2KubotaTrack Adjuster Cylinder RC411-21606 for Kubota Excavator KX040-4 KX121-3 KX91-3 U35 U35-S2$404.00Water Temp Sensor 31351-32830 for Kubota KX121-2 KX161-3 KX41-2 U15 U35 F2260 F2400 F2560KubotaWater Temp Sensor 31351-32830 for Kubota KX121-2 KX161-3 KX41-2 U15 U35 F2260 F2400 F2560$57.38

Part Numbers and Cross References

RD411-42200KX121KX161KX121-3KX121-3SKX161-3KX161-3SKX161-3STU45STRC411-42630RP471-42630RC601-42630HRC60-42630KX121-3STKX91-3KX91-3SKX91-3S2R1401-4227087682994AF25553TC630-9323016454-42502V1903V2003TV2203V2403KX121-2KX161-215321-73260KX040KX101KX151KH-110KX040-41A091-234801A091-23482D180319013-03450V2003T1065-72220KX080-3KX080-3TKX080-3MCKX080-3SKX121-3SCAKX121-3STCA6A671-75040447500-1850RD118-21700RD148-2170017311-2201017311-2201217331-2201017311-22013V1500V1702DIV1902DI17311-2231017311-22312D1803MDI1G911-14520L4300DTL4300FL4330DTL4330GSTL4630DTL4630HSTL5030GSTM4800SUD-FM4800SU-F6A671-75030U45-3S1A091-123501A091-1236015439-1235015296-12350V1902RD148-21300RD118-21300RD138-21300RD158-21302KX033-4RA211-51280KX41-3KX71-3R520SD11051G787-510131A021-56602D1703RD401-61270RD411-64050RD411-64052U45-3STD1005D1503U35-S2KX057-4KX057-5PSVL-42PSVL-42-EPSVL-42CG-201A091-1182217345-118201A091-1182016423-11820V1702Kubota:R2401-42280KX0573G710-75910KX080-4KX080-4SKX080-4S2RD411-42403RD411-42406RD411-4240015852-3314015852-3314315221-3314015221-3314214941-33140KH-007HKH-1911G780-0162015469-0162019228-0162019202-23280KH-101KH-15168658-14430RD118-14430RD118-14433RD148-1443068651-1443070091-00152RD411-22900RD547-22900RD461-21900KX057-4CARC411-21503RC411-21505RC411-21506RC411-21603RC411-21606RC411-21605KE-0017031351-32830KX41-2KX41HKX61-2KX91-2

Applications and Fitment Summary

  • Kubota · KX057
  • Kubota · KX121
  • Kubota · KX121-3
  • Kubota · KX121-3S
  • Kubota · KX161
  • Kubota · KX161-3
  • Kubota · KX161-3S
  • Kubota · KX161-3ST
  • Kubota · U45
  • Kubota · U45S
  • Kubota · U45ST
  • Kubota · U48
  • Kubota · U55
  • Kubota · s: Kubota Excavator: KX057, KX121, KX161, U45, U48, U55, KX121-3, KX121-3S, KX161-3, KX161-3S, KX161-3ST, U45S, U45ST
  • Kubota · s: For Kubota Excavator: KX057, KX121, KX161, U45, U48, U55, KX121-3, KX121-3S, KX161-3, KX161-3S, KX161-3ST, U45S, U45ST
  • Kubota · Kubota Excavator: KX057, KX121, KX161, U45, U48, U55, KX121-3, KX121-3S, KX161-3, KX161-3S, KX161-3ST, U45S, U45ST
  • Kubota · KX033-4
  • Kubota · KX71-3 CABIN
  • Kubota · KX71-3 CANOPY
  • Kubota · KX71-3S CABIN
  • Kubota · KX71-3S CANOPY
  • Kubota · KX91-3
  • Kubota · KX91-3S
  • Kubota · KX91-3S2

Frequently Asked Questions

What parts replace OEM number KX121-3?

This page lists 40 replacement listings indexed under KX121-3. Compare cross references, applications, and pricing before ordering.

How do I confirm fitment for KX121-3?

Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.

Can I request a quote if KX121-3 is not an exact match?

Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.

Confirm fitment

Send machine details before ordering high-risk parts.