Kubota L3800 vs Rural King RK37

Across 7 measurable specs, the Rural King RK37 leads 5 categories to 1 (1 tied). Machine pages: Kubota L3800 and Rural King RK37.

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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	KubotaL3800	Rural KingRK37

▶Engine
Engine Manufacturer	Kubota	Yanmar
Engine Model	D1803	3TNV88C-DKTF
Engine Type	Diesel, 3-cylinder, liquid-cooled	4-cycle, water-cooled diesel (natural aspiration)
No. of Cylinders	3	3
Displacement	111.4 in³	100.2 in³
Rated Engine Speed	2700 rpm	3000 rpm
Engine Power (Gross)	37.4 hp	37.4 hp
PTO Power	Gear: 31.5 hp; HST: 30 hp	RK37S, RK37SC: 30.2 hp; RK37H, RK37HC: 28.8 hp
Engine Emissions Constraints	Tier 4	Tier 4
Cooling System Type	Not Published	Water-cooled
Air Cleaner	Not Published	Dual dry
Fuel System	Not Published	Common rail direct injection
Alternator	Not Published	RK37S, RK37H: 55 A, 12 V; RK37SC, RK37HC: 70 A, 12 V
▶Hydraulics
Pump Type	Not Published	Dual gear pump
Implement Flow	6.3 gpm	6.3 gpm
Steering Flow	Not Published	4.6 gpm
Total Hydraulic Flow	Not Published	10.9 gpm
Overall Hydraulic Pump Flow	Not Published	10.9 gpm
Hydraulic System Type	Open center	Live, independent, separate reservoir
Rear Remote Hydraulic Flow	Not Published	Not Published
No. of Standard Remote Valves	Not Published	1
No. of Optional Remote Valves	Not Published	1
▶Fluid Capacity
Fuel Tank Capacity	10 gal	9 gal
Coolant Capacity	Not Published	7.4 qt
Crankcase Capacity	Not Published	6.0 qt
Transmission / Hydraulic System Capacity	Gear: 7.1 gal; HST: 6.2 gal	9.25 gal
Front Axle Fluid Capacity	Not Published	8.7 qt
▶PTO & Hitch
PTO Type	Not Published	Independent
PTO Rear	540 rpm	540 rpm
Mid-PTO Availability	Not Published	RK37H, RK37HC: optional, 2,000 rpm; RK37S, RK37SC: not offered
Category, 3-Point Hitch	Category I	Category I
Hitch Lift Capacity	Not Published	2,646 lb
Hitch Lift Capacity (at 24”)	Not Published	1,764 lb
Lift Control Type	Not Published	Position
▶Transmission & Drivetrain
Transmission Type	Gear: 8-speed constant mesh; HST: hydrostatic	RK37S, RK37SC: 12F/12R fully synchronized shuttle shift; RK37H, RK37HC: 3-range hydrostatic
No. of Speeds	Gear: 8F/4R; HST: infinite (3-range)	RK37S, RK37SC: 12F/12R; RK37H, RK37HC: infinite forward and reverse, 3 ranges
Max Travel Speed (Forward)	Not Published	RK37S, RK37SC: 15.0 mph; RK37H, RK37HC: 16.8 mph
Max Travel Speed (Reverse)	Not Published	Not Published
Clutch	Not Published	RK37S, RK37SC: single plate dry clutch, 8.86 in diameter; RK37H, RK37HC: electro-hydraulic PTO clutch assembly (hydrostatic drive)
Differential Lock & Limited Slip Options	Rear differential lock standard	4WD with differential lock
▶Chassis, Steering & Controls
Frame Type	Not Published	Rigid unit: transmission case, engine and front axle support bolted together
Steering	Hydrostatic power steering	Hydrostatic power steering
Brakes	Wet disc	Wet disc
Seat Suspension & Adjustability	Not Published	Suspension seat with armrests & retractable seat belt
Front Axle Type	Bevel gear front axle	4WD, center-pivot reverse Eliot type
Front Axle Rating	Not Published	Not Published
Drawbar Capacity	Not Published	Not Published
▶Dimensions & Maneuverability
Overall Length with 3-Point Hitch	2WD: 110.6 in; 4WD: 106.3 in	RK37S, RK37H: 126 in; RK37SC, RK37HC: 128 in
Overall Width	55.1 in	RK37S, RK37H: 53.5 in; RK37SC, RK37HC: 58.0 in
Wheelbase	63.3 in	RK37S, RK37SC: 64.5 in; RK37H, RK37HC: 66.1 in
Ground Clearance	2WD: 13.6 in; 4WD: 13.4 in	12.8 in
Min. Turn Radius without Brakes	Not Published	116 in
Height to Top of ROPS	91.7 in	RK37S, RK37H: 94.5 in
Height to Top of ROPS (folded)	Not Published	Not Published
Height to Top of Cab Model	Not Published	RK37SC, RK37HC: 92.5 in
▶Weight
Tractor Weight (Base)	2WD gear: 2480 lb; 4WD gear: 2657 lb; 4WD hydro: 2668 lb	RK37S: 3,065 lb; RK37H: 3,106 lb; RK37SC: 3,417 lb; RK37HC: 3,450 lb
Weight with ROPS and Loader	Not Published	Not Published
Weight with Cab and Loader	Not Published	4,469 lb
▶Tire Options
Tire Size & Options	2WD: 5.00-15 front; 4WD: 7.2-16 front; 11.2-24 rear	R4 Industrial (standard): F 10-16.5, R 43x16-20; R1 Agricultural (optional): F 7-16, R 11.2x24; R3 Turf (optional): F 28x8.5-15, R 41x14-20; Titan (USA)
R1 Agricultural - Front	2WD: 5.00-15; 4WD: 7.2-16	7-16
R1 Agricultural - Rear	11.2-24	11.2x24
R3 Turf - Front	2WD: 23x8.50-12; 4WD: 25x8.50-14	28x8.5-15
R3 Turf - Rear	13.6-16	41x14-20
R4 Industrial - Front	27x8.50-15 (4WD)	10-16.5
R4 Industrial - Rear	15-19.5	43x16-20
▶Loader & Attachments
Quick Attach Loader System	LA524 quick attach loader	L102: skid-steer compatible quick-attach
Loader Model	LA524	L102
Loader Lift Height	LA524: 94.3 in	L102: 102.3 in (maximum lift height to pivot pin)
Loader Lift Capacity (Full Height)	LA524: 1131 lb (at pin)	L102: 2,116 lb (at pivot pin, to full height)
Loader Breakout Force	LA524: 2462 lbf (at pin)	L102: 3,435 lb (at pivot pin)
▶Warranty
Warranty Length & Coverage	Not Published	Full machine: 2 years or 2,000 hours; Powertrain: 8 years or 3,000 hours (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 L3800 vs Rural King RK37: Quick Answers

Which has more horsepower, the Kubota L3800 or the Rural King RK37?

They are effectively tied: both machines are rated at 37.4 hp hp for engine hp.

Which has more PTO horsepower, the Kubota L3800 or the Rural King RK37?

The Kubota L3800 leads on pto hp at 31.5 hp hp, compared to 30.2 hp hp for the Rural King RK37.

Which is heavier, the Kubota L3800 or the Rural King RK37?

The Rural King RK37 leads on weight at 3,450 lb lb, compared to 2,668 lb lb for the Kubota L3800.

Which has more loader lift capacity, the Kubota L3800 or the Rural King RK37?

The Rural King RK37 leads on loader lift at 2,116 lb lb, compared to 1,131 lb lb for the Kubota L3800.

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