Tractor reference
John Deere 4066M
Specifications, maintenance, parts and compatibility reference.
Reference set: United States · 4WD 4M base-price configuration · Current Official North America configuration from the John Deere compact utility tractor price book published 5 May 2026.
Engine
Engine manufacturerYanmar
Cylinders4
Engine displacement2.1 L
Rated engine power (individual product page)65.9 hp
Rated engine speed2600 rpm
AspirationIntercooled turbocharged
Emissions systemTier IV EPA emissions certified
Transmission
Standard transmissioneHydro, in base price
Transmission options12F/12R PowrReverser factory option
PTO
PTO power52 hp
Hydraulics
Base hydraulic configurationHydraulics not included in base machine
Electrical
Alternator75 A
Electrical system12 V
Battery cold-cranking amps770 CCA
Maintenance schedule
Tasks shown here are limited to the selected reference context plus any generic machine-level tasks. Intervals are tied to the cited maintenance source, and each task shows its evidence confidence.
EngineChange engine oilTY26669 · Plus-50 II Premium 10W-30 Engine OilEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →John Deere Plus-50 II Premium 10W-30; capacity 5.4 L (5.7 qt).
Every 400 hours or annuallyCapacity: 5.4 L
EngineReplace engine oil filterM806419 · Engine Oil FilterEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →
Every 400 hours or annually, whichever comes first
Fuel & AirReplace fuel / water separatorMIU803221 · Fuel / Water SeparatorEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Filter element MIU802421 is listed with the separator.
Every 400 hours or annually
Fuel & AirReplace spin-on fuel filterMIU803127 · Fuel FilterEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →
Every 400 hours or annually
TransmissionChange transmission / hydraulic oilTY22000 · Low Viscosity Hy-Gard Transmission / Hydraulic OilEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →John Deere Low Viscosity Hy-Gard; capacity 47.3 L (12.5 gal).
Every 400 hours or annuallyCapacity: 47.3 L
TransmissionReplace transmission oil filterRE45864 · Transmission Oil FilterEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →
Every 400 hours or annually
PTOReplace front pto filterLVA23443 · Front PTO FilterEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →When equipped with front PTO.
Every 400 hours or annually
HydraulicsReplace hydraulic oil filterLVA10419 · Hydrostatic Transmission Oil FilterEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →
Every 400 hours or annually
Fuel & AirReplace primary air filterRE68048 · Primary Air FilterEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →
Every 600 hours or annually
Fuel & AirReplace secondary air filterRE68049 · Secondary Air FilterEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →
Every 600 hours or annually
AxleChange front axle oil - heavy-duty axleTY22035 · Low Viscosity Hy-Gard Front Axle OilEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Heavy-duty front axle capacity 8.0 L (8.5 qt).
Every 600 hoursCapacity: 8 L
AxleChange front axle oil - standard axleTY22035 · Low Viscosity Hy-Gard Front Axle OilEvidence: Official sourceSource: John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Standard front axle capacity 5.5 L (5.8 qt).
Every 600 hoursCapacity: 5.5 L
Compatible parts & kits
Parts shown here are limited to the selected reference context plus generic machine-level fitment. Configuration-specific fitment, evidence confidence and the direct fitment source are shown under each part when available.
RE68048Primary Air FilterEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Air Filters →
RE68049Secondary Air FilterEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Air Filters →
M806419Engine Oil FilterEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Engine Oil Filters →
TY26669Plus-50 II Premium 10W-30 Engine OilEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Engine Oils →
MIU802421Fuel Filter ElementEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Fuel Filters →
MIU803127Fuel FilterEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Fuel Filters →
MIU803221Fuel / Water SeparatorEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Fuel Filters →
LVA10419Hydrostatic Transmission Oil FilterEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Hydraulic Filters →
LVA23443Front PTO FilterEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Hydraulic Filters →
RE45864Transmission Oil FilterEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Hydraulic Filters →
LVA21039Filter Pak · Legacy number — replaced by TA25765Evidence: Official direct fitment · John Deere LVA21039 Filter Pak - substitute TA25765 →Maintenance Kits →
TA25765Filter PakEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Evidence: Official direct fitment · John Deere TA25765 Filter Pak - compatible equipment →Maintenance Kits →
TY22000Low Viscosity Hy-Gard Transmission / Hydraulic OilEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Transmission & Hydraulic Fluids →
TY22035Low Viscosity Hy-Gard Front Axle OilEvidence: Official direct fitment · John Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition →Transmission & Hydraulic Fluids →
Sources
John Deere · official sourceJohn Deere 4066M Compact Utility Tractor MY24 Replacement Parts Guide - Worldwide Edition
John Deere · official sourceJohn Deere LVA21039 Filter Pak - substitute TA25765
John Deere · official sourceJohn Deere TA25765 Filter Pak - compatible equipment