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Compare technical specifications, horsepower ratings, hydraulic capacities, and dimensions across all tractor models.
Head-to-Head Arena Spotlight
Direct technical match-up between flagship models
60/72" deckUnknown
39HP
F3990Archived Specification Record
VS
+15.4%
45 HP
Quick Takeaways:⚡ Rated Power: Bukh D-45 (+6.0 HP / +15.4%)🛢️ Displacement: Bukh D-45 (+1.6 L)
Model overview
3 selected
60/72" deckUnknown
39HP
F3990Archived Specification Record
Kubota
F3990
Catalog archive
Engine and power
Rated horsepower
39 HP
45 HP
785 HP+740.0 HP
PTO horsepower
—
—
529.6 HP★ Leader
Engine displacement
1.5 L
3.1 L
15.9 L+12.8 L
Cylinders
4 cylinders
3 cylinders
6 cylinders
Fuel type
Diesel
Diesel
Diesel
Transmission and drive
Drive system
Unknown
2WD
Tracks (4-Track)
Transmission type
Hydrostatic
—
Full power shift (17F/2R)
Forward / reverse gears
— fwd / — rev
9 fwd / 2 rev
17 fwd / 2 rev
Weight and capacities
Operating weight
778 kg
—
27,760 kg+26,982 kg
Hydraulic total flow
—
—
—
ASABE Field Implement Capacity Matchup
Max Subsoiler (12" depth)
1 Shanks
1 Shanks
19 Shanks+18 Shanks
Max Disk Harrow (8 mph)
6 ft (2 m)
6 ft (2 m)
51 ft (16 m)+45 ft
Max Air Seeder (5.5 mph)
15 ft (5 m)
15 ft (5 m)
100 ft (30 m)+85 ft
Target Ballast & Balance
Heavy-draft standard (30/70 for 2WD, 40/60 for MFWD, 55/45 for 4WD)
2,317 lbs(Est. Cap)
30% Front / 70% Rear
6,525 lbs
30% Front / 70% Rear
76,500 lbs(Est. Cap)
50% Front / 50% Rear
Est. Fuel Burn (75% Load)
1.4 gal/h (5.3 L/h)
1.6 gal/h (6.1 L/h)
28.3 gal/h (107.1 L/h)
Provenance and serial decoders
Production years
—
1958–1960
2025
Assembly factory
—
—
Fargo, North Dakota, USA
Serial decoder support
Not indexed
Not indexed
Not indexed
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