Kubota L3901 vs Rural King RK37S

Across 9 measurable specs, the Rural King RK37S leads 7 categories to 2. Machine pages: Kubota L3901 and Rural King RK37S.

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Category Verdict

Full Spec Sheet

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

Spec	KubotaL3901	Rural KingRK37S

▶Engine
Engine Manufacturer	Kubota	Yanmar
Engine Model	F (2WD gear), DT (4WD gear): D1803-CR-E4-LB3; HST (4WD): D1803-CR-E4-LB4	3TNV88-CR
Engine Type	Liquid-cooled, 3-cylinder, 4-cycle, multi-valve diesel, naturally aspirated, common rail direct injection	Natural aspiration
No. of Cylinders	3	3
Displacement	111.4 in³	100.2 in³
Rated Engine Speed	2700 rpm	3000 rpm
Engine Power (Gross)	37.5 hp	37.4 hp
PTO Power	F (2WD gear), DT (4WD gear): 32.1 hp; HST (4WD): 30.6 hp	30.2 hp
Engine Emissions Constraints	Tier 4	Tier 4
Cooling System Type	Liquid-cooled, water with pressurized radiator	Liquid-cooled
Air Cleaner	Dry paper single element	Dual dry
Fuel System	Common rail (CRS) direct injection, electronic fuel injection	Common Rail Direct Injection
Alternator	40 A, 12 V	55 A, 12 V
▶Hydraulics
Pump Type	Open center tandem pump, gear type	Dual gear pump
Implement Flow	6.3 gpm	6.4 gpm
Steering Flow	3.8 gpm	4.6 gpm
Total Hydraulic Flow	10.1 gpm	11.0 gpm
Overall Hydraulic Pump Flow	10.1 gpm	6.4 gpm
Hydraulic System Type	Open center	Not Published
Rear Remote Hydraulic Flow	Not Published	Not Published
No. of Standard Remote Valves	Not Published	1
No. of Optional Remote Valves	Up to 3 (self canceling detent valve or float detent valve options)	1
▶Fluid Capacity
Fuel Tank Capacity	11.1 gal	9.0 gal
Coolant Capacity	6.3 qt	7.4 qt
Crankcase Capacity	7.1 qt	6.0 qt
Transmission / Hydraulic System Capacity	F (2WD gear): 7.4 gal; DT (4WD gear): 7.5 gal; HST (4WD): 6.2 gal	9.25 gal
Front Axle Fluid Capacity	4.8 qt	8.7 qt
▶PTO & Hitch
PTO Type	Live independent PTO with hydraulic clutch	Independent
PTO Rear	540 rpm	540 rpm
Mid-PTO Availability	No mid-PTO offered	No mid-PTO offered
Category, 3-Point Hitch	Category I	Category I
Hitch Lift Capacity	1998 lb	2,646 lb
Hitch Lift Capacity (at 24”)	1433 lb	1,764 lb
Lift Control Type	Position control	Position
▶Transmission & Drivetrain
Transmission Type	F (2WD gear), DT (4WD gear): Synchronized shuttle gear transmission, 8F/8R; HST (4WD): Hydrostatic transmission, 3-range	12F/12R Syncro Shuttle
No. of Speeds	F (2WD gear), DT (4WD gear): 8F/8R; HST (4WD): 3-range	12 forward, 12 reverse
Max Travel Speed (Forward)	F (2WD gear), DT (4WD gear): 13.2 mph; HST (4WD): 14.1 mph	15.0 mph
Max Travel Speed (Reverse)	F (2WD gear), DT (4WD gear): 13.1 mph; HST (4WD): 12.7 mph	Not Published
Clutch	F (2WD gear), DT (4WD gear): Dry type dual stage; HST (4WD): Dry type single stage	Single plate dry clutch (8.86 in diameter); hydraulic clutch assembly for Independent PTO models
Differential Lock & Limited Slip Options	Rear differential lock standard	4WD, differential lock
▶Chassis, Steering & Controls
Frame Type	Two-post foldable ROPS (factory certified) with retractable seat belt	Transmission case, clutch housing, engine and front axle support bolted together to form a rigid unit
Steering	Integral power steering	Hydrostatic power steering
Brakes	Mechanical wet disc type, pedals can be locked together	Wet disc
Seat Suspension & Adjustability	Not Published	Suspension seat with armrests and retractable seat belt, standard
Front Axle Type	F (2WD gear): Tubular steel, non-adjustable tread spacing; DT (4WD gear), HST (4WD): Bevel gear front axle, non-adjustable tread spacing	Center-pivot, reverse Elliot type (4WD)
Front Axle Rating	2865 lb (at 41.3 in tread, 2WD and 4WD models)	Not Published
Drawbar Capacity	730 lb	Not Published
▶Dimensions & Maneuverability
Overall Length with 3-Point Hitch	F (2WD gear): 119.1 in; DT (4WD gear), HST (4WD): 116.3 in	126 in
Overall Width	55.1 in	53.5 in
Wheelbase	63.3 in	64.5 in
Ground Clearance	F (2WD gear): 13.6 in; DT (4WD gear), HST (4WD): 13.5 in	12.8 in
Min. Turn Radius without Brakes	F (2WD gear): 8.9 ft; DT (4WD gear), HST (4WD): 10.5 ft	116 in
Height to Top of ROPS	91.7 in	94.5 in
Height to Top of ROPS (folded)	Not Published	Not Published
Height to Top of Cab Model	Not Published	Not Published
▶Weight
Tractor Weight (Base)	F (2WD gear): 2590 lb; DT (4WD gear): 2767 lb; HST (4WD): 2778 lb	3,065 lb
Weight with ROPS and Loader	Not Published	Not Published
Weight with Cab and Loader	Not Published	Not Published
▶Tire Options
Tire Size & Options	R1 Agricultural (standard); R3 Turf; R4 Industrial (4WD)	Titan (USA): R4 Industrial (Std), R1 Agricultural (Opt), R3 Turf (Opt)
R1 Agricultural - Front	F (2WD gear): 5-15 (7.5L-15 optional); DT (4WD gear), HST (4WD): 7.2-16	7-16
R1 Agricultural - Rear	11.2-24	11.2x24
R3 Turf - Front	F (2WD gear): 23x8.5-12; DT (4WD gear), HST (4WD): 25x8.5-14	28x8.5-15
R3 Turf - Rear	13.6-16	41x14-20
R4 Industrial - Front	27x8.5-15 (4WD)	10-16.5
R4 Industrial - Rear	15-19.5 (4WD)	43x16-20
▶Loader & Attachments
Quick Attach Loader System	LA525: 2-Lever Quick Coupler, no tools required to attach and detach loader	L102: Skid-steer compatible quick-attach
Loader Model	LA525	L102
Loader Lift Height	LA525: 94.3 in	L102: 102 in
Loader Lift Capacity (Full Height)	LA525: 1131 lb	L102: 2,116 lb at pivot pin to full height
Loader Breakout Force	LA525: 2462 lbf	L102: 3,435 lb at pivot pin
▶Warranty
Warranty Length & Coverage	24 months or 1500 hours (general)	2-year full machine warranty; 8-year, 3,000-hour powertrain warranty (no deductible, parts and labor)
▶ITC Company Accessories
Accessories that fit	None tagged yet	TYM T394 Rural King RK37 Brush Screen Insert $249.99

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Kubota L3901 vs Rural King RK37S: Quick Answers

Which has more horsepower, the Kubota L3901 or the Rural King RK37S?

The Kubota L3901 leads on engine hp at 37.5 hp hp, compared to 37.4 hp hp for the Rural King RK37S.

Which has more PTO horsepower, the Kubota L3901 or the Rural King RK37S?

The Kubota L3901 leads on pto hp at 32.1 hp hp, compared to 30.2 hp hp for the Rural King RK37S.

Which is heavier, the Kubota L3901 or the Rural King RK37S?

The Rural King RK37S leads on weight at 3,065 lb lb, compared to 2,778 lb lb for the Kubota L3901.

Which has more loader lift capacity, the Kubota L3901 or the Rural King RK37S?

The Rural King RK37S leads on loader lift at 2,116 lb lb, compared to 1,131 lb lb for the Kubota L3901.

Which has more three-point hitch lift capacity, the Kubota L3901 or the Rural King RK37S?

The Rural King RK37S leads on 3-pt lift (24 in) at 1,764 lb lb, compared to 1,433 lb lb for the Kubota L3901.

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