Which has more horsepower, the John Deere 4066M or the John Deere 4066R?

They are effectively tied: both machines are rated at 65 hp hp for engine hp.

Which has more PTO horsepower, the John Deere 4066M or the John Deere 4066R?

They are effectively tied: both machines are rated at 51.9 hp hp for pto hp.

Which has more loader lift capacity, the John Deere 4066M or the John Deere 4066R?

They are effectively tied: both machines are rated at 2,396 lb lb for loader lift.

Which has more three-point hitch lift capacity, the John Deere 4066M or the John Deere 4066R?

They are effectively tied: both machines are rated at 2,500 lb lb for 3-pt lift (24 in).

John Deere 4066M vs John Deere 4066R

Every published spec for both machines, side by side. The verdict below is computed straight from the spec sheets, not opinion.

Across 8 measurable specs, this matchup is a dead heat: 0 categories to the John Deere 4066M, 0 to the John Deere 4066R, 8 tied. Machine pages: John Deere 4066M and John Deere 4066R.

Want a third or fourth machine in the mix? Open this matchup in the comparison tool and add up to two more.

Category Verdict

Spec	John Deere 4066M	John Deere 4066R
Engine HP (hp)	65 hp	65 hp
PTO HP (hp)	51.9 hp	51.9 hp
Loader Lift (lb)	2,396 lb	2,396 lb
3-Pt Lift (24 in) (lb)	2,500 lb	2,500 lb
Lift Height (in)	112.1 in	112.1 in
Breakout Force (lbf)	3,853 lbf	3,853 lbf
Hydraulic Flow (gpm)	17.4 gpm	17.4 gpm
Travel Speed (mph)	18.6 mph	18.6 mph

The headline numbers at a glance.

John Deere 4066MJohn Deere 4066R

Engine HPhp

▲65 hp

PTO HPhp

▲51.9 hp

Weightlb

—

Loader Liftlb

▲2,396 lb

1,764 lb

▲2,396 lb

1,764 lb

At pivot@ 19.7 in ahead of pivotAt pivot@ 19.7 in ahead of pivot

3-Pt Lift (24 in)lb

▲2,500 lb

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Full Spec Sheet

Every published spec, side by side, including the details the graphs above don't chart.

Spec	John Deere4066M	John Deere4066R


PTO Power	51.9 hp	51.9 hp
Alternator	75 A, 12 V	75 A, 12 V
Air Cleaner	Dual element (dry type with safety element)	Dual element (dry type with safety element)
Engine Type	Diesel	Diesel
Fuel System	High-pressure common rail direct injection	High-pressure common rail direct injection
Displacement	127.6 in³	127.6 in³
No. of Cylinders	4	4
Rated Engine Speed	2600 rpm	2600 rpm
Cooling System Type	Liquid (water pump)	Liquid (water pump)
Engine Manufacturer	Yanmar	Yanmar
Engine Power (Gross)	65 hp @ 600 rpm	65 hp @ 600 rpm
Engine Emissions Constraints	Tier 4	Tier 4

Weight with ROPS and Loader	Not Published	Not Published
Weight with Cab and Loader	Not Applicable	Not Published

Warranty Length & Coverage	6-year/2,000-hour powertrain; 2-year/2,000-hour basic (full machine)	6-year/2,000-hour powertrain; 2-year/2,000-hour basic (full machine)

Pump Type	Dual gear	Single gear
Steering Flow	5.7 gpm	6.2 gpm
Implement Flow	10.2 gpm	11.2 gpm
Total Hydraulic Flow	17.4 gpm	17.4 gpm
Hydraulic System Type	Open center	Open center
Rear Remote Hydraulic Flow	Not Published	Not Published
Overall Hydraulic Pump Flow	17.4 gpm	17.4 gpm
No. of Optional Remote Valves	Up to 6 rear remotes	Up to 6 rear remotes
No. of Standard Remote Valves	Not Published	Not Published

PTO Rear	540 rpm	540 rpm
PTO Type	Independent (electrohydraulic)	Independent (electrohydraulic)
Lift Control Type	Position control	Position control
Hitch Lift Capacity	3,130 lb	3,130 lb
Mid-PTO Availability	Available	Available
Category, 3-Point Hitch	Category 1 (limited)	Category 1 (limited)
Hitch Lift Capacity (at 24”)	2,500 lb	2,500 lb

R3 Turf - Rear	44X18.00-20 (4PR)	44X18.00-20 (4PR)
R3 Turf - Front	27X10.50-15	27X10.50-15
Tire Size & Options	R1 Bar, R3 Turf, R4 Industrial	R1 Bar, R3 Turf, R4 Industrial
R4 Industrial - Rear	420/85D24	420/85D24
R4 Industrial - Front	260/70D16.5	260/70D16.5
R1 Agricultural - Rear	13.6-28 (6PR) or 380/70R28 or 360/80R28	13.6-28 (6PR) or 380/70R28 or 360/80R28
R1 Agricultural - Front	8.00-16 (10PR) or 280/70R16 or 250/75R16	8.00-16 (10PR) or 280/70R16 or 250/75R16

Coolant Capacity	Open station: 6.8 qt; Cab: 8.0 qt (if equipped)	Open station: 6.8 qt; Cab: 8.0 qt (if equipped)
Crankcase Capacity	5.6 qt (with filter)	5.6 qt (with filter)
Fuel Tank Capacity	Open station: 15.0 gal; Cab: 14.7 gal (if equipped)	Open station: 15.0 gal; Cab: 14.7 gal (if equipped)
Front Axle Fluid Capacity	5.3 qt	5.3 qt
Transmission / Hydraulic System Capacity	12.5 gal	12.5 gal

Loader Lift Height	112.1 in	112.1 in
Loader Breakout Force	At pivot: 3,853 lbf; @ 19.7 in ahead of pivot: 2,902 lbf	At pivot: 3,853 lbf; @ 19.7 in ahead of pivot: 2,902 lbf
Quick Attach Loader System	Rigid mounted with parking kit available; Parking stand kit BW16127 (parkable)	Rigid mounted with parking kit available; Parking stand kit BW16127 (parkable)
Loader Lift Capacity (Full Height)	At pivot: 2,396 lb; @ 19.7 in ahead of pivot: 1,764 lb	At pivot: 2,396 lb; @ 19.7 in ahead of pivot: 1,764 lb

Clutch	Wet; wet clutch disk diameter 5.08 in	Wet; wet clutch disk diameter 5.08 in
No. of Speeds	PowrReverser: 12F/12R; eHydro: Infinitely-variable, 3 range	eHydro: Infinitely-variable, 3 range; PowrReverser: 12F/12R
Transmission Type	Standard: 12/12 PowrReverser (PRT); Optional: eHydro (eHST), 3-range hydrostatic	Standard: eHydro (eHST), 3-range hydrostatic; Optional: 12/12 PowrReverser (PRT)
Max Travel Speed (Forward)	18.6 mph	18.6 mph
Max Travel Speed (Reverse)	18.6 mph	18.6 mph
Differential Lock & Limited Slip Options	Differential lock: Yes	Differential lock: Yes

Brakes	Multi-plate wet disc	Multi-plate wet disc
Steering	Hydrostatic power steering	Hydrostatic power steering
Frame Type	ROPS - Fixed	ROPS - Foldable
Front Axle Type	Mechanical front wheel drive (MFWD) - Standard; engagement On-the-Go	Mechanical front wheel drive (MFWD) - Standard; engagement On-the-Go
Drawbar Capacity	Max vertical load 1103 lb	Max vertical load 1103 lb
Front Axle Rating	(Continuous) 3307 lb	(Continuous) 3307 lb
Seat Suspension & Adjustability	Optional mechanical suspension seat; adjustable weight 52-275.6 lb (115-275 lb); fore/aft adjustment; flips forward	Air suspension seat with swivel

Wheelbase	73.0 in	73.0 in
Overall Width	78.2 in	78.2 in
Ground Clearance	Front axle: 15.6 in; Drawbar support: 14.8 in	Front axle: 15.6 in; Drawbar support: 14.8 in
Height to Top of ROPS	93.7 in	93.7 in
Height to Top of Cab Model	Not Applicable	96.3 in
Height to Top of ROPS (folded)	69.5 in	69.5 in
Min. Turn Radius without Brakes	17.1 ft (5.2 m)	17.1 ft (5.2 m)
Overall Length with 3-Point Hitch	130.6 in	130.6 in