Kubota L3970 Tractor Specs, Features & Buyer Guide

The Kubota L3970 is a Grand L70-series compact utility tractor aimed at acreage owners and small farm operators who want more power for loader work, heavier PTO implements, and year-round tasks. It pairs a 39 HP turbo diesel with a 3-range hydrostatic transmission for smooth, precise control—especially helpful for snow removal, material handling, and landscaping where speed changes happen constantly.  

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Kubota L3970 Quick Specs

• Series / Class: Grand L70 (L70 Series), Compact Utility  
• Model years: 2026–  
• Original price (listed): $34,979 (2026)  
• Engine (gross): 39 hp (29.1 kW)  
• PTO (claimed): 30.9 hp (23.0 kW)  
• Drive: 4WD  
• Transmission: Hydrostatic, infinite F/R (3-range)  
• Hydraulic pump flow: 9.83 gpm (37.2 lpm)  
• 3-pt hitch: Category 1; lift 3,748 lb at ends  
• PTO: Independent rear; 540 rpm (1.375”)  
• Weight: 4,057–4,387 lb (ROPS–cab)  

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Engine Details

The L3970 uses a Kubota D1803 turbocharged, 3-cylinder, liquid-cooled diesel with common-rail direct injection—built to deliver strong working torque at lower rated RPM, which is a big deal for pushing into piles, running a snowblower, or handling heavier PTO loads.  

Engine specs

• Engine model: Kubota D1803 (turbo diesel)  
• Displacement: 111.4 cu in / 1.8 L  
• Bore x stroke: 3.43” x 4.03” (87 x 102 mm)  
• Rated engine speed: 2300 rpm  
• Max torque: 109.4 lb-ft (148.3 Nm)  

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Transmission & Drivetrain

The 3-range hydrostatic (HST) setup gives infinite forward/reverse control—excellent for loader cycles, tight maneuvering, and job sites where you’re constantly adjusting speed.  

• Type: Hydrostatic  
• Ranges: 3-range; infinite F/R  

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Hydraulics & 3-Point Hitch

The L3970 is listed with 9.83 gpm pump capacity and strong 3-pt numbers that fit common Canadian implements (rear blade, box blade, tiller, snowblower, etc.).  

• Pump flow: 9.83 gpm (37.2 lpm)  
• Rear remotes: up to 3  
• 3-pt hitch: SAE Category 1  
• Lift capacity (ends): 3,748 lb (1700 kg)  
• Lift @ 24” behind: 2,646 lb (1200 kg)  

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PTO

• Rear PTO: Independent  
• Type: 540 (1.375”)  
• 540 achieved at: 2299 engine rpm  

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Dimensions, Weight & Tires

These are the “fit and haul” specs (trailer, garage height, stability, etc.).  

• Wheelbase: 77 in (195 cm)  
• Length: 121.9 in (309 cm)  
• Width: 59.8 in (151 cm)  
• Height: 97.2 in (ROPS) / 91.3 in (cab)  
• Ground clearance: 13.5 in  
• Weight: 4,057 lb (ROPS) / 4,387 lb (cab)  
• Standard tires: Front 7.00-16 / Rear 12.4-24  

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Electrical

• Battery: 12V; CCA listed 582, optional 680  

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Compatible Attachments

Front-End Loader: LA806

• Lift (full height at pin): 1,726 lb  
• Lift (1.5 m at pin): 2,328 lb  
• Breakout (at pin): 3,634 lb  
• Max height at pin: 105.4 in  

Backhoe: BH92A

• 2-ft flat digging depth: 104.6 in  
• Reach from pivot: 150 in  
• Loading height: 88.5 in  

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Kubota L3970 FAQ

How much horsepower does the Kubota L3970 have?

It’s listed at 39 gross HP with 30.9 PTO HP.  

What transmission is on the L3970?

A 3-range hydrostatic (HST) with infinite forward and reverse.  

What is the 3-point lift capacity?

3,748 lb at the lift points and 2,646 lb at 24 inches behind.  

Does it have an independent PTO?

Yes—independent rear PTO, 540 rpm.  

Kubota L3970 Reviews & Ratings