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White Field Boss 21 vs White Field Boss 37

Verdict: White Field Boss 21 vs White Field Boss 37

The White Field Boss 21 and the White Field Boss 37 are both tractors — here is how they stack up on the figures that matter. White Field Boss 37 leads on rated power with 30 hp against 19 hp. White Field Boss 37 is the lighter machine (1,324 kg vs 1,588 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. White Field Boss 37 holds more fuel (40.0 L vs 23.1 L) for longer stints between fills. In short: choose the White Field Boss 37 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.

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Fit & specs
White Field Boss 21 Tractor
White
62
Fit score
Best match
Clear
White Field Boss 37 Tractor
White
62
Fit score
Best match
Clear
Rated power
19 hp
30 hp
Confidence
40%
40%
Guide price
Overview
Distributor
WhiteReference
WhiteReference
Manufacturer
IsekiReference
IsekiReference
With 12.4-16 rear tires.Reference
liquid-cooledReference
Drive
shaftReference
Original price
$11,000 (1988)Reference
Final drives
helical gearReference
Steering
powerReference
Engine
Fuel tank
23.1 LReference
40.0 LReference
Engine
15.7 kWReference
27.6 kWReference
Displacement
1.2 LReference
1.8 LReference
Bore/Stroke
76 x 86 mmReference
84 x 82 mmReference
Power
15.7 kWReference
27.6 kWReference
Air cleaner
single stageReference
dry elementReference
Pre-heating
glow plugsReference
glow plugsReference
Compression
22.5:1Reference
21:1Reference
Rated RPM
2600Reference
2600Reference
Idle RPM
850-2860Reference
Starter volts
12Reference
12Reference
Firing order
1-3-4-2Reference
Oil capacity
7.0 LReference
Transmission
Gears
12 forward and 4 reverseReference
18 forward and 6 reverseReference
PTO & Hydraulics
PTO (claimed)
14.2 kWReference
22.4 kWReference
Type
3-blade with hydraulic liftReference
open centerReference
Pressure
142.3 barReference
147.2 barReference
Total flow
20.8 lpmReference
Rear Type
IReference
1Reference
Rear PTO
transmissionReference
independentReference
Rear PTO Type
540 (1.375)Reference
540Reference
Front PTO
crankshaft-drivenReference
Front PTO Type
2600Reference
Valves
1 or 2Reference
Pump flow
29.1 lpmReference
Control
position and draft controlReference
Clutch
dry discReference
Engine RPM
540@2232Reference
Dimensions
Wheelbase
149 cmReference
180 cmReference
Weight
213 kgReference
1324 kgReference
Front tire
4.00-12Reference
6.00-16Reference
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
8-16Reference
Lawn/turf rear
13.6-16Reference
11.2-28Reference
Length
267 cmReference
321 cmReference
Width
108 cmReference
181 cmReference
Height (exhaust)
191 cmReference
200 cmReference
2WD Shipping weight
720 kgReference
4WD Shipping weight
760 kgReference
2WD Ground clearance
35 cmReference
4WD Ground clearance
29 cmReference
2WD Front tread
85/95 cmReference
115 to 154 cmReference
4WD Front tread
94 cmReference
120 cmReference
Rear tread
87/103 cmReference
114 to 150 cmReference
2WD Rear tire
12.4-28Reference
2WD Standard tires (ag)
Front: 6.00-16. Rear: 12.4-28Reference
4WD Standard tires (ag)
Front: 9.5-16. Rear: 8-16Reference
Height (ROPS)
213 cmReference
2WD, 3,153 4WD} Shipping weight
1324 kgReference
Ground clearance
33 cmReference
White Field Boss 21 attachments
Field Boss 21 Serial Numbers
1986
TE3210F02879 (4WD)Reference
0679 (4WD)Reference
1987
TE3210F03079 (4WD)Reference
00713 (4WD)Reference
1988
TE3210F04003 (4WD)Reference
01025 (4WD)Reference
Electrical
Charging system
alternatorReference
alternatorReference
Charging amps
35Reference
35Reference
Battery volts
12Reference
12Reference
Ground
negativeReference
Battery CCA
531Reference
Attachment overview
60" Mower deck
Cutting width
152 cmReference
Cut height
5 to 12 cmReference
Speeds
Variants
TE4370
similar Iseki modelReference
White Field Boss 37 attachments
Field Boss 37 Serial Numbers
Location:
Frame, front-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.

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