Head to head · Agricultural

UTB/Universal S640 vs UTB/Universal U-651M

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UTB/UniversalModel A

UTB/Universal S640

Agricultural

power
65 hp
displacement
219 ci
Cylinders
4
Forward gears
6
Full S640 specs
Image not recorded
UTB/UniversalModel B

UTB/Universal U-651M

Tractor

power
65 hp
displacement
291 ci
Cylinders
4
Forward gears
10
Full U-651M specs
UTB/UniversalUTB/Universal S640
vs
UTB/UniversalUTB/Universal U-651M

How they compare

Headline specs vs. the whole Agricultural

n = 829–1,130

Engine Power

= Effectively tied
S64065 hp
U-651M65 hp
Median Agricultural Tractor110 hp

S640 is in the 16th percentile; U-651M is in the 16th · 1,028 models

Engine Displacement

▲ U-651M higher · +72 ci (+33%)
S640219 ci
U-651M291 ci
Median Agricultural Tractor336 ci

S640 is in the 19th percentile; U-651M is in the 46th · 1,083 models

Cylinders

= Effectively tied
S6404
U-651M4
Median Agricultural Tractor5.5

S640 is in the 31st percentile; U-651M is in the 31st · 1,130 models

Forward Gears

▲ U-651M higher · +4 (+67%)
S6406
U-651M10
Median Agricultural Tractor16

S640 is in the 11th percentile; U-651M is in the 23rd · 972 models

S640 (A)U-651M (B)Median Agricultural Tractor

Full comparison

Every spec, side by side

General Information

SpecUTB/Universal S640UTB/Universal U-651MDifference
ManufacturerUTB/UniversalUTB/UniversalSame
ModelS640U-651M—
CategoryAgriculturalNot recorded—

Engine

SpecUTB/Universal S640UTB/Universal U-651MDifference
ManufacturerUTB/UniversalUTB—
ModelNot recordedD-110—
Power Output65hp65hpSame
Rated RPM2,400RPM1,800RPM▲ S640+600 RPM · +33%
Cylinders44Same
Displacement219ci291ci▲ U-651M+72 ci · +33%
Bore4in4.3in▲ U-651M+0.3 in · +7%
Stroke4.3in5.1in▲ U-651M+0.8 in · +19%

Transmission

SpecUTB/Universal S640UTB/Universal U-651MDifference
TypeConstant meshManual—

Dimensions & Weight

SpecUTB/Universal S640UTB/Universal U-651MDifference
Length124in155in▲ U-651M+31 in · +25%
WidthNot recorded74.8in—
HeightNot recorded104in—
Operating Weight6,700lb8,069lb▲ U-651M+1,369 lb · +20%

Hydraulics

SpecUTB/Universal S640UTB/Universal U-651MDifference
System TypeOpen centerNot recorded—

Power Take-off (PTO)

SpecUTB/Universal S640UTB/Universal U-651MDifference
Speed 1540rpmNot recorded—

Hitch & Towing

SpecUTB/Universal S640UTB/Universal U-651MDifference
Hitch TypeThree-Point HitchThree-Point HitchSame
Hitch CategoryII/ICategory 2—
Hitch PositionRearRearSame

Chassis & Drive

SpecUTB/Universal S640UTB/Universal U-651MDifference
Chassis TypeNot recorded4x4 MFWD 4WD—
Drive TypeNot recorded4WD—

Electrical

SpecUTB/Universal S640UTB/Universal U-651MDifference
Starter TypeElectricElectric Starter—

Operator Station

SpecUTB/Universal S640UTB/Universal U-651MDifference
TypeOpenNot recorded—

Category context

Both models against the field

Engine Power

median 110 hp
A · 16th percentile (65 hp)B · 16th percentile (65 hp)

Engine Displacement

median 336 ci
A · 19th percentile (219 ci)B · 46th percentile (291 ci)

Cylinders

median 5.5
A · 31st percentile (4)B · 31st percentile (4)

Forward Gears

median 16
A · 11th percentile (6)B · 23rd percentile (10)

Operating Weight

median 10,914 lb
A · 23rd percentile (6,700 lb)B · 32nd percentile (8,069 lb)
A · S640B · U-651MMedian Agricultural Tractor
Full spec pageUTB/Universal S640Full spec pageUTB/Universal U-651M