Best for
- Frequent front-loader work
- Mowing and compact-property maintenance
- Buyers wanting Premium controls in a narrow tractor
- Cold-climate cab configurations
Kubota L3970
A detailed, independently maintained profile of the Kubota L3970, including key capabilities, practical fit and full specifications.
MODELL3970
DRIVE4WD
WEIGHT1,840 kg ROPS / 1,990 kg cab
MARKETUnited States / Grand L70 Premium / ROPS or cab
Engine power
39 HP
39 HP gross at 2,300 rpm
PTO output
30.9 HP
30.9 HP
Rear lift
1,700 kg
1,700 kg at lift points / 1,200 kg at 610 mm
Transmission
3-range hydrostatic transmission (HST)
Hydrostatic, 3 ranges
Tractor overview
The Kubota L3970 is a 39-horsepower Premium Grand L70 tractor that combines the smaller 1.826-litre engine with turbocharging and the longer Premium chassis. It delivers 30.9 PTO horsepower, 148.3 Nm of maximum torque and a 37.2 L/min hydraulic pump. The official brochure rates rear-link lift at 1,700 kg at the lift points and 1,200 kg at 610 mm behind them. A three-range hydrostatic transmission, 2.9 m minimum turning radius and a choice of ROPS or cab make it particularly useful for loader work, mowing and property maintenance. Premium trim also brings the multifunction loader joystick and upgraded operator features. It is not a heavy field tractor: the modest PTO figure and Category 1 hitch still place it in the compact-utility class. Choose it over the L3770 when the extra turbocharged torque, Premium controls and longer wheelbase will be used regularly rather than simply for the higher model number.
Who this tractor suits
Not ideal for
- Large balers or high-PTO-demand implements
- Operators needing Category 2 implement capacity
Practical specification guide
What the headline specifications mean during real tractor work.
Engine and usable power
Kubota L3970 is rated at 39 HP gross at 2,300 rpm, with 148.3 Nm of maximum torque and 30.9 HP available at the PTO. Match continuous implement demand to PTO output rather than gross engine horsepower.
Hydrostatic operating range
The 3-range hydrostatic transmission (HST) provides 0.1–29.4 km/h travel speed with infinitely variable control inside each range. It favors loader work, mowing and repeated direction changes; mechanical rear differential lock assists when traction drops.
Rear hitch and hydraulic capacity
The hydraulic system uses Gear pump; 37.2 L/min and the rear hitch is rated at 1,700 kg at lift points / 1,200 kg at 610 mm. The Category 1 hitch and up to 3 optional rear remotes determine which mounted and hydraulic implements can be used without additional equipment.
PTO implement matching
The tractor uses Independent rear PTO, operates at 540 PTO at 2,299 engine rpm, and has hydraulic engagement. Check the implement's minimum PTO-horsepower requirement and driveline speed before choosing cutters, tillers or other powered attachments.
Size, stability and access
A 1,955 mm wheelbase, 1,840 kg ROPS / 1,990 kg cab operating weight and 342 mm ground clearance affect maneuverability, transport and ballast needs. Cab and ROPS versions should be assessed separately because their weight and overall height differ.
Configuration & variant guide
Options and market differences that can change how this tractor is equipped or used.
| Option | Available setup | What it changes |
|---|---|---|
| Operator-station variant | ROPS or factory cab | The operator-station choice changes weather protection, machine weight and purchase price. Seat specification is adjustable suspension seat, while control layout is Right-side controls; multifunction joystick on Premium trim. |
| Loader and backhoe preparation | Front-loader compatible: Yes; backhoe compatible: Yes | Confirm the exact loader/backhoe model, mounting kit, ballast requirement and compatibility with the selected cab or ROPS build before ordering. |
| Rear hydraulic remotes | Up to 3 optional rear remotes | Remote-valve count determines whether implements with hydraulic cylinders, top links or other auxiliary functions can be operated without aftermarket valve additions. |
| PTO and hitch setup | Independent rear PTO; 540 PTO at 2,299 engine rpm; Category 1 rear hitch | This setup defines driveline speed and implement category. Verify shaft, hitch pin and implement-weight compatibility rather than relying only on engine horsepower. |
| Cab comfort and regional build | Air conditioning: Optional; market: United States / North American specification | Dealer builds can differ in tires, cold-weather equipment, loader controls and optional hydraulics, so the final order sheet should be checked against the published base specification. |
CHECKPOINT 06
Strengths and considerations
What stands out
- Officially documented Grand L70 engine and PTO output.
- Easy three-range hydrostatic operation.
- ROPS and factory-cab configurations.
- BH92A backhoe and matched-loader support.
Check before buying
- Hydrostatic drive is not optimized for continuous heavy drawbar work.
- Rear lift changes little across several higher-horsepower models.
- Options can materially increase configured price.
CHECKPOINT 07
ID
EN
SP
SP
PT
HY
TR
TY
EL
ST
OP
IM
DM
SP
CN
Full specifications
81 data points across 15 categories.
ID
General Identification
7 fields
⌄
- Brand
- Kubota
- Model Name
- L3970
- Model Year
- 2026
- Series
- Grand L70 Series
- Configuration
- Premium trim; ROPS or factory cab
- Tractor Class
- Compact Utility Tractor
- Drive Configuration
- 4WD
EN
Engine
15 fields
⌄
- Engine Manufacturer
- Kubota
- Engine Model
- D1803-CR-TE5
- Engine Type
- Direct-injection, water-cooled, 4-cycle diesel
- Number of Cylinders
- 3
- Bore × Stroke
- 87 × 102.4 mm
- Engine Displacement
- 1.826 L (1,826 cc)
- Aspiration
- Turbocharged
- Fuel System
- Common-rail system (CRS)
- Injection Pump
- Electronically controlled common rail
- Rated Engine Speed
- 2,300 rpm
- Maximum Engine Power
- 39 HP gross at 2,300 rpm
- Maximum Torque
- 148.3 Nm
- Governing Type
- Electronic
- Air Intake System
- Dry-type air cleaner
- Emission Standard
- EPA Final Tier 4
SP
Power Output
2 fields
⌄
- Engine Gross Power
- 39 HP
- PTO Power
- 30.9 HP
SP
Brake System
4 fields
⌄
- Brake Type
- Wet disc
- Actuation
- Hydraulic
- Parking Brake
- Mechanical parking brake
- Brake Cooling
- Oil-immersed
PT
PTO (Power Take-Off)
5 fields
⌄
- PTO Type
- Independent rear PTO
- PTO Engagement
- Hydraulic engagement
- PTO Speed
- 540 PTO at 2,299 engine rpm
- PTO Shaft
- SAE 1-3/8 in, 6-spline
- Ground Speed PTO
- No
HY
Hydraulic System
9 fields
⌄
- Hydraulic Type
- Open center
- Hydraulic Pump
- Gear pump; 37.2 L/min
- Lifting Capacity
- 1,700 kg at lift points / 1,200 kg at 610 mm
- Lift Control
- Position control
- 3-Point Hitch
- Yes
- Hitch Category
- Category 1
- Lower Link Ends
- Telescopic lower links
- Auxiliary Valve
- Up to 3 optional rear remotes
- Response Control
- Mechanical
TR
Transmission & Drivetrain
7 fields
⌄
- Clutch Type
- Hydrostatic; no clutch pedal
- Transmission Type
- 3-range hydrostatic transmission (HST)
- Gearbox Configuration
- Hydrostatic, 3 ranges
- Forward Gears
- Infinite within 3 ranges
- Reverse Gears
- Infinite within 3 ranges
- Forward Speed Range
- 0.1–29.4 km/h
- Differential Lock
- Mechanical rear differential lock
TY
Tyres & Axle Data
7 fields
⌄
- Tyre Type
- Agricultural; alternate tire options available
- Front Tyres
- 7.0-16
- Rear Tyres
- 12.4-24
- Front Axle
- 4WD front axle
- Rear Axle
- Rear axle
- Track Width (Front)
- 1,155 mm
- Track Width (Rear)
- 1,200–1,480 mm
EL
Electrical & Electronics
5 fields
⌄
- Electrical System
- 12 V
- Battery Capacity
- 12 V, 582 CCA; 680 CCA cold-climate model
- Starter Motor
- Electric
- Instrument Cluster
- Digital/analog instrumentation
- Warning Indicators
- Engine and charging warnings
ST
Steering System
4 fields
⌄
- Steering Type
- Hydrostatic power steering
- Steering Gear
- Hydrostatic
- Turning Radius (with brakes)
- 2.9 m
- Steering Column
- Tilt-adjustable steering
OP
Operator Environment
6 fields
⌄
- Seat
- Adjustable suspension seat
- Suspension Seat
- Available
- ROPS
- ROPS or factory cab
- Canopy
- ROPS canopy optional
- Footstep
- Flat deck with anti-slip steps
- Control Layout
- Right-side controls; multifunction joystick on Premium trim
IM
Implement Compatibility Matrix
2 fields
⌄
- Front Loader Compatible
- Backhoe Attachment Compatible
DM
Dimensions & Weight
6 fields
⌄
- Wheelbase
- 1,955 mm
- Overall Length
- 3,095 mm
- Overall Height
- 2,320 mm cab / 2,470 mm ROPS
- Overall Width
- 1,520 mm
- Minimum Ground Clearance
- 342 mm
- Unladen Weight
- 1,840 kg ROPS / 1,990 kg cab
SP
Ownership & Cost
1 field
⌄
- Availability / Market
- United States / North American specification
CN
Comfort & Noise
1 field
⌄
- Air Conditioning
- Optional
No specifications match your search.
CHECKPOINT 08
Sources and verification
Last manually verifiedJuly 24, 2026
Market / variantUnited States / Grand L70 Premium / ROPS or cab
Accuracy note: Exact values come from Kubota's US Grand L70 brochure. Tire, loader, cab, cold-weather and rear-remote equipment varies by configuration; unsupported estimates from the previous JSON were removed.
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