Skip to content
An independent tractor referenceSpecifications. Sources. Side by side.
TractorStack.
Search
Find your tractor.
Menu ☰
Years in Production / 1988–2004
UTB/Universal
643
Explore the specifications, hardware, and original references for the UTB/Universal 643.
No photo
64hp
Source index power
MFWD Optional
Drive
1988–2004
Production years
UTB/Universal
Manufacturer
643 / 01
At a glance
Production
Utility tractor
Built in Brasov, Romania
- Manufacturer
- UTB/Universal
- Original Price
- $25,000 (2004)
Mechanical
Two- or four-wheel drive
Power steering
Wet disc brakes
- Differential Lock
- mechanical rear
Hydraulics
- Type
- open center
- Pressure
- 2175 psi150.0 bar
- Valves
- 1
- Pump Flow
- 9 gpm34.1 lpm
Hitch
- Rear Type
- II
- Control
- position and draft control
- Rear Lift
- 4630 lbs2100 kg
Pto
- Rear Pto
- independent
- Rear Type
- 540/1000
- Engine Rpm
- 540@2160
- Engine Rpm
- 1000@2400
Electrical
- Ground
- negative
- Charging System
- alternator
- Battery Volts
- 12
- Battery Ah
- 150
643 / 02
Under the hood
Engine Detail (Option 1)
UTB D-121.050
diesel
4-cylinder
liquid-cooled
- Displacement
- 219.4 ci3.6 L
- Bore Stroke
- 4.02x4.33 inches102 x 110 mm
- Power
- 64 hp47.7 kW
- Fuel System
- direct injection
- Air Cleaner
- oil bath
- Compression Ratio
- 17:1
- Rated Rpm
- 2400
- Torque
- 152 lb-ft206.1 Nm
- Torque Rpm
- 1400
- Starter Volts
- 12
- Starter Power
- 4.7 hp3.5 kW
- Oil Capacity
- 10.6 qts10.0 L
- Coolant Capacity
- 14.8 qts14.0 L
- Fuel Type
- diesel
- Cylinders
- 4
- Cooling
- liquid-cooled
Engine Detail (Option 2)
diesel
4-cylinder
- Displacement
- 196.9 ci3.2 L
- Rated Rpm
- 2400
- Fuel Type
- diesel
- Cylinders
- 4
Engine Options
UTB 3.6L 4-cyl diesel
3.2L 4-cyl diesel
- Fuel Tank
- 16.4 gal62.1 L
643 / 03
Gears & controls
Transmission (Option 1)
Four gears (1-4) plus reverse (R) in two ranges (low and high).
- Transmission Type
- constant mesh
- Gears
- 8 forward and 2 reverse
- Clutch
- dry disc
- Oil Capacity
- 24.3 qts23.0 L
Transmission (Option 2)
Optional creeper adds a third range to the basic transmission.
- Transmission Type
- creeper
- Gears
- 12 forward and 3 reverse
- Clutch
- dry disc
Transmission (Option 3)
- Transmission Type
- shuttle
- Gears
- 8 forward and reverse
643 / 04
Size. Stance. Footprint.
Dimensions
- Length
- 149.2 in378 cm
- Height
- 100.4 in255 cm
- Wheelbase
- 89.4 in227 cm
- Front tread
- 55.1 in139 cm
- Rear tread
- 55.5 in140 cm
Dimensions And Tires
- Wheelbase
- 89.4 inches227 cm
- Weight
- 6192 to 6889 pounds
- Front Tire
- 6.00-16
- 2wd Rear Tire
- 14.9R-28
Tires And Tracks
- 2wd Standard Tires Ag
- Front: 6.00-16. Rear: 14.9R-28
- 4wd Standard Tires Ag
- Front: 9.5/8-24. Rear: 12.4R-36