Crawler Dozers · Make & Model reference
Fiat-Allis 31B
Before buying, inspect engine, transmission, and final drives carefully as parts can be very expensive.
Operating weight
85,000 lbs
Horsepower
350 hp
Fuel burn
17.0 - 22.0 gph
Years produced
1986 - 1993
AI-updated · Last refresh 7/19/2026
Full specifications
Blade capacity12.0 cu yd
Max drawbar pull95,000 lbs
Ripper optionsMulti-shank, single shank
Operating weight with ripper92,000 lbs
Shipping dimensions
Length22 ft
Width12 ft
Height11 ft 6 in
Weight85,000 lbs
Use these for permit routing and lowboy selection.
Recent auction history
| Year range | Hours | Avg | Low | High |
|---|---|---|---|---|
| 2017-2022 | 12,000-18,000 | $65,000 | $40,000 | $90,000 |
AI price estimate
Excellent, recently refurbished
1991 model year
$80,000
Good, working condition
1988 model year
$55,000
Fair, needs major repairs
1986 model year
$30,000
Common problems to check
- Engine leaks (oil, coolant)
- Hydraulic pump failure (costly)
- Undercarriage track frame cracks
- Electrical sensor faults
Why buyers pick it
- Immense power for large jobs
- Heavy-duty components designed for abuse
- Excellent ripping capabilities
Best jobs for this machine
Heavy civil excavationMiningLand reclamation
Fiat-Allis 31B for sale on Equip Place
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