Kubota M8-181
The Kubota M8-181 is a tractor produced by Kubota. It is equipped with a 408.3 ci 6.7 L engine. The listed engine power is Diesel (listed): 180 hp / 134.2 kW. Transmission: infinite forward and reverse. Operating weight: 19510 lbs 8849 kg.
Engine Power
Diesel (listed): 180 hp / 134.2 kW
Fuel & Capacities
99 gal
374.7 L
Transmission
infinite forward and reverse
Operating Weight
19510 lbs
8849 kg
Overview
 | 2020 -
M8 SeriesRow-Crop tractorVersatile built |
|---|---|
2020 - | |
M8 Series | |
Row-Crop tractor | |
Versatile built | |
2020 - | |
|---|---|
M8 Series | |
Row-Crop tractor | |
Versatile built |
Production | |
|---|---|
Distributor | Kubota |
Manufacturer | Versatile |
Row-Crop tractor | |
Built in Winnigpeg, Manitoba, Canada | |
Kubota M8-181 Engine | |
|---|---|
Cummins 6.7L 6-cyl diesel | |
Fuel tank | 99 gal
374.7 L |
Exhaust fluid (DEF) | 9 gal
34.1 L |
Engine details ...  | |
Kubota M8-181 Power | |
|---|---|
Engine | 180 hp
134.2 kW |
PTO (claimed) | 145 hp
108.1 kW |
Drawbar (tested) | 158.26 hp
118.0 kW |
PTO (tested) | 169.73 hp
126.6 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Power steering | |
Trailer brakes | hydraulic OptOptional |
Cab standard with air-conditioning. | |
Hydraulics | |
|---|---|
Type | closed-center load sensing |
Rear valves | 3 to 5 |
Pump flow | 31.7 gpm
120.0 lpm |
42.2 gpmOptOptional
159.7 lpm | |
SCV flow | 31.7 gpm
120.0 lpm |
Steering flow | 11.1 gpm
42.0 lpm |
Tractor hitch | |
|---|---|
Rear Type | III/IIIN |
Rear lift (at 24"/610mm) | 12478 lbs
5660 kg |
15543 lbsOptOptional
7050 kg | |
Front Hitch | IIIN |
Front lift | 8818 lbs
3999 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Clutch | electro-hydraulic |
Rear PTO Type | 540/1000 (1.375) |
1000 (1.75) | |
Front PTO Type | 1000 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 114 inches
289 cm |
Weight | 19510 lbs
8849 kg |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
M8 Built Right. Built Ready. published in 2021, by Kubota |
Engine
| 2020 -
M8 SeriesRow-Crop tractorVersatile built |
|---|---|
2020 - | |
M8 Series | |
Row-Crop tractor | |
Versatile built | |
2020 - | |
|---|---|
M8 Series | |
Row-Crop tractor | |
Versatile built |
Engine Detail — 408.3 ci / 6.7 L Diesel
Manufacturer | Cummins B6.7 |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 408.3 ci
6.7 L |
Bore/Stroke | 4.21x4.88 inches
107 x 124 mm |
Emissions | Tier 4 |
Power | 180 hp
134.2 kW |
Rated RPM | 2100 |
Starter | electric |
Starter volts | 12 |
Transmission
| 2020 -
M8 SeriesRow-Crop tractorVersatile built |
|---|---|
2020 - | |
M8 Series | |
Row-Crop tractor | |
Versatile built | |
2020 - | |
|---|---|
M8 Series | |
Row-Crop tractor | |
Versatile built |
Transmission options | |
|---|---|
30-speed six-speed power shift | |
continuously-variable transmission |
Transmission — 30 forward and 15 reverse six-speed power shift
Type | six-speed power shift |
Gears | 30 forward and 15 reverse |
Transmission — infinite forward and reverse continuously-variable transmission
Type | continuously-variable transmission |
Gears | infinite forward and reverse |
Dimensions
| 2020 -
M8 SeriesRow-Crop tractorVersatile built |
|---|---|
2020 - | |
M8 Series | |
Row-Crop tractor | |
Versatile built | |
2020 - | |
|---|---|
M8 Series | |
Row-Crop tractor | |
Versatile built |
Kubota M8-181 Tires |
|---|
Dimensions | |
|---|---|
Wheelbase | 114 inches
289 cm |
Height | 128 inches
325 cm |
Shipping weight | 19510 lbs
8849 kg |
Bar rear axle | 4.13 by 98 inches
104 by 2489 mm |
Bar rear axle | 4.13 by 118 inches
104 by 2997 mm |
Tests
| 2020 -
M8 SeriesRow-Crop tractorVersatile built |
|---|---|
2020 - | |
M8 Series | |
Row-Crop tractor | |
Versatile built | |
2020 - | |
|---|---|
M8 Series | |
Row-Crop tractor | |
Versatile built |
OCED Tractor Test 2217 | |
|---|---|
Diesel 30-speed 4WD
June 22 - 25, 2020
Link: OCED Tractor Test 2217 file | |
PTO performance | |
Max power | 169.73 hp
126.6 kW |
Fuel use | 9.5 gal/hour
36.0 l/hour |
Power at rated engine speed | 163.60 hp
122.0 kW |
Fuel use | 9.7 gal/hour
36.7 l/hour |
Power at rated PTO speed | 167.00 hp
124.5 kW |
Fuel use | 9.6 gal/hour
36.3 l/hour |
Drawbar performance | |
Max power | 158.26 hp
118.0 kW |
Fuel use | 9.9 gal/hour
37.5 l/hour |
Max pull | 21975 lbs
9967 kg |
Attachments
| 2020 -
M8 SeriesRow-Crop tractorVersatile built |
|---|---|
2020 - | |
M8 Series | |
Row-Crop tractor | |
Versatile built | |
2020 - | |
|---|---|
M8 Series | |
Row-Crop tractor | |
Versatile built |
Photos
Kubota M8-181 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Kubota M8-181 based on its 180 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 5 to 7 Bottom (18")5 - 7 铧 (45 cm) | Commercial / Field Scale | Large acreage tillage; requires front ballast weights. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 15 to 22 ft Folding Disc4.5 - 6.7 m 折叠式圆盘耙 | Commercial / Field Scale | Wide commercial field leveling; requires hydraulic remotes. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Kubota M8-181.
Estimated Continuous Field Runtime: 10.6 hrs
Approximately 10.6 hours of continuous field operation at ~75% rated power on a full tank (99 gal / 374.8 L).
Estimated 75% Load Fuel Burn~9.4 gal/hr (35.4 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Kubota M8-181 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota M8-181.
Converted Equivalents:
Horsepower (HP)180 hp
Kilowatts (kW)134.2 kW
Metric Horsepower (PS / CV)182.5 PS
Direct Competitor Comparison
Compare Kubota M8-181 against same-era industry alternatives in the same horsepower class.
Current Model
Kubota
Kubota M8-181
Engine Power:Diesel (listed): 180 hp / 134.2 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 1486
Engine Power:162.2
Production Years:1976 - 1981
Massey FergusonMarket Competitor
Massey Ferguson 6S.165
Engine Power:162.3
Production Years:2022 - 2026
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