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Gravely 18-H vs Gravely 818
Verdict: Gravely 18-H vs Gravely 818
The Gravely 18-H and the Gravely 818 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 18 hp. Gravely 18-H is the lighter machine (394 kg vs 408 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely 818 holds more fuel (20.1 L vs 17.0 L) for longer stints between fills. Gravely 18-H is the newer design (1987 vs 1978). 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
Gravely
62
Fit score
Best match
Clear
Gravely
62
Fit score
Best match
Clear
Rated power
18 hp
18 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Gravely (a part of Ariens)Reference
GravelyReference
air-cooled horizontal-shaft horizontally-opposedReference
air-cooled horizontal-shaft opposed-twinReference
Engine
Fuel tank
17.0 LReference
20.1 LReference
Displacement
42.18 ciReference
47.7 ciReference
Bore/Stroke
79 x 70 mmReference
83 x 73 mmReference
Power (gross)
13.4 kWReference
13.4 kWReference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
3.8 LReference
5.7 LReference
Transmission
Transmission
SundstrandReference
—
Gears
infinite forward and reverseReference
8 forward and 4 reverseReference
PTO & Hydraulics
Rear Type
0Reference
—
Mid PTO
independentReference
—
Clutch
electricReference
—
Dimensions
Wheelbase
123 cmReference
—
Weight
76 kgReference
408 kgReference
Front tire
16x6.50-8Reference
16x6.50-8Reference
Rear tire
23x10.50-12Reference
23x8.50-12Reference
Lawn/turf front
16x6.50-8Reference
16x6.50-8Reference
Lawn/turf rear
23x10.50-12Reference
23x8.50-12Reference
Length
187 cmReference
207 cmReference
Width
108 cmReference
106 cmReference
Height
116 cmReference
109 cmReference
Shipping weight
394 kgReference
408 kgReference
Gravely 18-H attachments
Electrical
Ground
negativeReference
negativeReference
Charging amps
15Reference
—
Battery volts
12Reference
12Reference
Battery AH
—
43Reference
Battery Group
—
22FReference
Attachment overview
48" Mower deck
Type
shaft-driven hydrostaticReference
3-blade with hydraulic liftReference
Cutting width
121 cmReference
127 cmReference
Overall width
134 cmReference
—
Cut height
3 to 8 cmReference
—
Gravely 818 attachments
50" 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.