Compare/White Field Boss 21 vs White Field Boss 31

White Field Boss 21 vs White Field Boss 31

Verdict: White Field Boss 21 vs White Field Boss 31

The White Field Boss 21 and the White Field Boss 31 are both tractors — here is how they stack up on the figures that matter. White Field Boss 31 leads on rated power with 25 hp against 19 hp. White Field Boss 21 is the lighter machine (1,588 kg vs 2,215 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. White Field Boss 31 holds more fuel (28.0 L vs 23.1 L) for longer stints between fills. In short: choose the White Field Boss 31 for outright pulling power, or the White Field Boss 21 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

White

Fit score

Best match

Clear

White

Fit score

Best match

Clear

Rated power

19 hp

25 hp

Confidence

40%

Guide price

—

Overview

Distributor

WhiteReference

Manufacturer

IsekiReference

With 12.4-16 rear tires.Reference

Three synchronized gears in four ranges.Reference

Drive

shaftReference

—

2WD Steering

—

manualReference

4WD Steering

—

powerReference

Engine

Fuel tank

23.1 LReference

28.0 LReference

Engine

15.7 kWReference

22.4 kWReference

Displacement

1.2 LReference

1.5 LReference

Bore/Stroke

76 x 86 mmReference

86 x 86 mmReference

Power

15.7 kWReference

22.4 kWReference

Air cleaner

single stageReference

—

Pre-heating

glow plugsReference

—

Compression

22.5:1Reference

21.4:1Reference

Rated RPM

2600Reference

Idle RPM

850-2860Reference

Starter volts

12Reference

Firing order

—

1-3-2Reference

Transmission

Gears

12 forward and 4 reverseReference

Transmission

—

Triple-syncReference

PTO & Hydraulics

PTO (claimed)

14.2 kWReference

18.6 kWReference

Type

3-blade with hydraulic liftReference

partially synchronizedReference

Pressure

142.3 barReference

147.2 barReference

Total flow

20.8 lpmReference

29.1 lpmReference

Rear Type

IReference

Rear PTO

transmissionReference

independentReference

Rear PTO Type

540 (1.375)Reference

Front PTO

crankshaft-drivenReference

liveReference

Front PTO Type

2600Reference

Dimensions

Wheelbase

149 cmReference

165 cmReference

Weight

213 kgReference

2215 to 2414 poundsReference

Front tire

4.00-12Reference

5.00-15Reference

Rear tire

12.4-16 (2WD)Reference

—

Standard tires (ag)

Front: 6.00-12. Rear: 12.4-16 (4WD)Reference

—

Lawn/turf front

24-8.50-12 (4WD)Reference

—

Lawn/turf rear

13.6-16Reference

355x800-20Reference

Length

267 cmReference

294 cmReference

Width

108 cmReference

132 cmReference

Height (exhaust)

191 cmReference

203 cmReference

2WD Shipping weight

720 kgReference

1004 kgReference

4WD Shipping weight

760 kgReference

1094 kgReference

2WD Ground clearance

35 cmReference

—

4WD Ground clearance

29 cmReference

—

2WD Front tread

85/95 cmReference

96 to 105 cmReference

4WD Front tread

94 cmReference

104 cmReference

Rear tread

87/103 cmReference

102 to 134 cmReference

2WD Rear tire

—

11.2-24Reference

2WD Standard tires (ag)

—

Front: 5.00-15. Rear: 11.2-24Reference

4WD Standard tires (ag)

—

Front: 7.00-16. Rear: 11.2-24Reference

2WD Lawn/turf front

—

24x8.50-12Reference

4WD Lawn/turf front

—

212x800-15Reference

White Field Boss 21 attachments

Field Boss 21 Serial Numbers

1986

TE3210F02879 (4WD)Reference

TE4300TM00126 (2WD)Reference

1987

TE3210F03079 (4WD)Reference

TE4300TM00163 (2WD)Reference

1988

TE3210F04003 (4WD)Reference

TE4300TM00276 (2WD)Reference

Electrical

Charging system

alternatorReference

Charging amps

35Reference

Battery volts

12Reference

Ground

—

negativeReference

Attachment overview

60" Mower deck

Cutting width

152 cmReference

—

Cut height

5 to 12 cmReference

—

Speeds

White Field Boss 31 attachments

Field Boss 31 Serial Numbers

Location:

—

Tractor frame on leftReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.