Tractor reference
Kubota LX4020
Specifications, maintenance, parts and compatibility reference.
Specification set: United States - LX4020HSD 4WD, 3-range HST, ROPS Current US LX20 configuration confirmed by Kubota USA; detailed specification values come from the current LX20 brochure.
Engine
Engine manufacturerKubota
Engine modelV1505-CR-TE5-D40R4
Engine typeDirect injection, vertical, water-cooled 4-cycle turbocharged diesel
Cylinders4
Displacement91.4 cu in
Displacement1498 cm3
Gross engine power39.8 hp
Rated engine speed2700 rpm
Transmission
Transmission speedsHST, 3 ranges
Driveline4WD
PTO
PTO power32.6 hp
PTO typeIndependent PTO
Rear PTO speed540 rpm rear PTO
Hydraulics
3-point hydraulic pump capacity9.5 gpm
Hydraulic systemOpen center, dual pump
3-point hitch categoryCategory I
3-point control systemPosition control valve
3-point lift capacity at 24 in. behind lift point1962 lb
3-point lift capacity at lift points2535 lb
Dimensions & Weight
Overall length101.6 in
Overall width53.7 in
Wheelbase66.7 in
Minimum ground clearance8.9 in
Tractor weight2191 lb
Turning radius with brake7.5 ft
Capacities
Engine oil capacity5 US qt
Transmission case capacity5.5 US gal
Steering & Brakes
SteeringHydrostatic power steering
Brake typeMulti-plate wet disc
Compatible parts & kits
This source-backed list can include maintenance parts, mounting hardware and accessory kits. Serial-number and machine-configuration restrictions may still apply, so review each part page before ordering or installing.
R1401-42270Outer Air Filter ElementEngine Air Filters →R2401-42280Inner Air Filter ElementEngine Air Filters →HH160-32093Engine Oil FilterEngine Oil Filters →6C830-55120Fuel Filter ElementFuel Filters →6C830-55220Water Separator ElementFuel Filters →HHK32-16774Hydraulic Oil Filter CartridgeHydraulic Filters →HH660-36060Hydrostatic Transmission Oil FilterTransmission Filters →
Compatible attachments
Attachment compatibility is stored separately from service parts. Configuration requirements below come from the cited compatibility source and can vary by driveline or tractor version.
BackhoeKubota BH77Kubota describes BH77 as performance matched to the LX20 Series. Confirm the LX4020-specific subframe and cab/ROPS configuration before ordering.Backhoe details: 180° swing arc; approximate net weight 824.5 lb excluding buckets and subframes. Kubota describes BH77 as performance matched to the LX20 Series; tractor-specific subframe requirements must be confirmed.
86.8 in digging depth at 2-ft flat bottom; 123.7 in reach from swing pivotWorking height: 123 in operating height fully raised
Front loaderKubota LA545Kubota pairs LA545 with LX4020. Confirm ROPS/cab Swift-Tach and hydraulic-coupler configuration before installation.Front loader details: Wide-boom loader with standard 2-lever quick coupler; optional mechanical self-leveling and Swift-Tach. Front loader is not compatible with LX3520DTN narrow tractor.
1,100 lb at pivot pin/max height; 1,325 lb at pivot pin @ 1.5 mLift height: 87.6 in maximum lift height at pivot pin
Mid Mount MowerKubota RC72-40LXCurrent Kubota material identifies 60 and 72 in mid-mount mower options for LX3520/LX4020. RCK60-40LX and RC72-40LX are the LX20 deck models. Confirm current mid-PTO and tire configuration before ordering.Mid Mount Mower details: Right side discharge; 3 blades; 1.5-4 in cutting height; parallel linkage moved by 3-point linkage; wash port; compatible with large-diameter, R4 and R14 tires.
72 in cutting widthWorking height: 1.5-4 in cutting-height range
Mid Mount MowerKubota RCK60-40LXCurrent Kubota material identifies 60 and 72 in mid-mount mower options for LX3520/LX4020. RCK60-40LX and RC72-40LX are the LX20 deck models. Confirm current mid-PTO and tire configuration before ordering.Mid Mount Mower details: Right side discharge; 3 blades; 1.5-4 in cutting height; parallel linkage moved by 3-point linkage; wash port; compatible with large-diameter, R4 and R14 tires.
60 in cutting widthWorking height: 1.5-4 in cutting-height range
Snow BlowerKubota LX2963Requires LX6971 front hitch and the correct LX20 mid-PTO driveline kit for LX4020.Snow Blower details: Gearbox reduction; hydraulic chute rotation; manual chute deflection. Requires LX2940B front hitch on LX2620 or LX6971 front hitch on LX3520/LX4020 plus the correct mid-PTO driveline kit. Not compatible with LX2620 SU, LX3520DTN narrow, or LX3520 SU configurations.
63 in residential 2-stage snow blowerWorking height: Front PTO-driven snow implement
Snow BlowerKubota LX2970Requires LX6971 front hitch and the correct LX20 mid-PTO driveline kit for LX4020.Snow Blower details: Oil-bath reduction gearboxes; hydraulic chute rotation; manual deflection; abrasion-resistant housing and impeller. Requires LX2940B front hitch on LX2620 or LX6971 front hitch on LX3520/LX4020 plus the correct mid-PTO driveline kit. Not compatible with LX2620 SU, LX3520DTN narrow, or LX3520 SU configurations.
51 in commercial 2-stage snow blowerWorking height: Front PTO-driven snow implement
Snow BlowerKubota LX2980Requires LX6971 front hitch and the correct LX20 mid-PTO driveline kit for LX4020.Snow Blower details: Oil-bath reduction gearboxes; hydraulic chute rotation; manual deflection; abrasion-resistant housing and impeller. Requires LX2940B front hitch on LX2620 or LX6971 front hitch on LX3520/LX4020 plus the correct mid-PTO driveline kit. Not compatible with LX2620 SU, LX3520DTN narrow, or LX3520 SU configurations.
64 in commercial 2-stage snow blowerWorking height: Front PTO-driven snow implement
Sources
Kubota · official sourceKubota USA LX20 Series brochure - LA535, LA545 and BH77 specifications
Kubota · official sourceKubota USA LX20 brochure - RCK60-40LX and RC72-40LX mid-mount mower specifications
Kubota · official sourceKubota USA LX20 snow implements brochure - snow blower compatibility and requirements