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Bolens 3112G ST120 vs Bolens G-12 1255
Verdict: Bolens 3112G ST120 vs Bolens G-12 1255
The Bolens 3112G ST120 and the Bolens G-12 1255 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. Bolens 3112G ST120 holds more fuel (18.9 L vs 4.7 L) for longer stints between fills. Bolens 3112G ST120 is the newer design (1987 vs 1976). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Bolens
62
Fit score
Best match
Clear
Bolens
62
Fit score
Best match
Clear
Rated power
12 hp
12 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
BolensReference
BolensReference
air-cooled vertical-shaftReference
air-cooled horizontal-shaftReference
Engine
Fuel tank
18.9 LReference
4.7 LReference
Displacement
28.42 ciReference
27.7 ciReference
Bore/Stroke
87 x 78 mmReference
89 x 73 mmReference
Power (gross)
8.9 kWReference
8.9 kWReference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
1.4 LReference
1.5 LReference
Transmission
Transmission
Peerless 801Reference
—
Gears
5 forward and 1 reverseReference
6 forward and 2 reverseReference
PTO & Hydraulics
Mid PTO
independentReference
independentReference
Clutch
electricReference
manualReference
Dimensions
Wheelbase
114 cmReference
107 cmReference
Front tire
15x6.00-6Reference
16x6.50-8Reference
Rear tire
20x8.00-10Reference
23x9.50-12Reference
Lawn/turf front
15x6.00-6Reference
16x6.50-8Reference
Lawn/turf rear
20x8.00-10Reference
23x9.50-12Reference
Length
175 cmReference
—
Width
87 cmReference
88 cmReference
Height
107 cmReference
101 cmReference
Weight
—
299 kgReference
Ground clearance
—
17 cmReference
Bolens 3112G attachments
3112G Serial Numbers
Location:
Serial number tag on the rear fender, under the tractor seat, on the left side.Reference
—
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Battery AH
45Reference
42Reference
Attachment overview
36" Mower deck
Type
belt-driven gearReference
gearReference
Cutting width
91 cmReference
106 cmReference
Bolens G-12 attachments
42" Mower deck
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.