Kubota B21
The Kubota B21 is a compact and versatile tractor that's perfect for small farms and big yards. It's a 4-wheel drive machine with a hydrostatic transmission, which means it's easy to control and can handle many different jobs. This tractor was made from 2001 to 2007, so it's a bit older but still reliable. The B21 has a Kubota D1005 diesel engine with 21 horsepower. It's liquid-cooled and has three cylinders, which helps it run smoothly. The tractor weighs 3,990 pounds and has industrial tires, making it sturdy for tough work. It has a Category I hitch that can lift up to 1,014 pounds, and a live rear PTO that spins at 540 rpm for running attachments. One cool feature is that you can add a backhoe to this tractor, making it even more useful for digging and moving dirt.
Quick specs
- Category
- Specialized
- Engine Power Output
- 21hp
- Operating Weight
- 3,990 lb
- Transmission
- Hydrostatic
At a glance
How the B21 compares
vs. Specialized medianDistribution
Engine Power (hp)
Across all Specialized tractors
This model
The B21 ranks at the 6th percentile for engine power among recorded specialized tractors.
Overview
About the Kubota B21
The Kubota B21 is a compact and versatile tractor that's perfect for small farms and big yards. It's a 4-wheel drive machine with a hydrostatic transmission, which means it's easy to control and can handle many different jobs. This tractor was made from 2001 to 2007, so it's a bit older but still reliable. The B21 has a Kubota D1005 diesel engine with 21 horsepower. It's liquid-cooled and has three cylinders, which helps it run smoothly. The tractor weighs 3,990 pounds and has industrial tires, making it sturdy for tough work. It has a Category I hitch that can lift up to 1,014 pounds, and a live rear PTO that spins at 540 rpm for running attachments. One cool feature is that you can add a backhoe to this tractor, making it even more useful for digging and moving dirt.
Full specifications
Every recorded spec
General
| Manufacturer | Kubota |
|---|---|
| Model | B21 |
| Category | Specialized tractor |
| Type | 4x4 MFWD 4WD |
| Years built | 2001–2007 |
| Operating weight | 3,990lb |
Engine
| Make | Kubota |
|---|---|
| Model | D1005 |
| Power | 21hp |
| Cylinders | 3 |
| Displacement | 61.1ci |
| Bore | 2.99in |
| Stroke | 2.9in |
Transmission
| Type | Hydrostatic |
|---|
Chassis & drive
| Chassis | 4x4 MFWD 4WD |
|---|---|
| Drive | MFWD 4WD |
| Steering | Hydrostatic Power |
| Brakes | Wet Disc |
| Cab | Four-post ROPS/FOPS |
Hydraulics
| Type | Open Center |
|---|
Power take-off
| Rear PTO | Live Rear PTO |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Operating weight | 3,990lb |
|---|
Capacities
| Cooling system | 0.9gal |
|---|
Head to head
B21 vs. Specialized median
How the Kubota B21 compares to other Specialized tractors
| Spec | This model | Specialized median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 21 hp | 62 hp | -66% | 6th |
| Engine Displacement | 61.1 ci | 239 ci | -74% | 13th |
| Cylinders | 3 | 4 | -25% | 18th |
| Operating Weight | 3,990 lb | 12,600 lb | -68% | 25th |
Medians and percentiles are computed from the specialized tractors in our database with a recorded value for each spec (sample sizes 50–58 models).
Compare to tractors with similar specs
Commonly compared Kubota tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Kubota B20 | 20 hp | 2,050 lb | 1990–1998 | Compare → |
| Kubota BX22 | 22 hp | 1,521.2 lb | 2002–2003 | Compare → |
| Kubota BX23 | 22 hp | 2,698.5 lb | 2004–2005 | Compare → |
| Kubota BX23S | 23 hp | 1,598.3 lb | 2017+ | Compare → |
| Kubota BX24 | 23 hp | 2,698 lb | 2006–2009 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Bobcat CT120 | 21 hp | 2,055 lb | 2008–2010 | Compare → |
| Bolens G212 G2102 | 21 hp | 1,588 lb | — | Compare → |
| Bolens G214 G2104 | 21 hp | 1,676 lb | — | Compare → |
| Branson 2100 | 21 hp | 1,891 lb | — | Compare → |
| Bobcat CT1021 | 21.1 hp | 1,488 lb | — | Compare → |
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FAQ
Common questions
When was the Kubota B21 in production?
Kubota B21 production started in 2001 and ended in 2007.
How much does the Kubota B21 weigh?
The Kubota B21 weighs about 3,990 lb in operating condition.
What transmission is in the Kubota B21?
Transmission on the Kubota B21 is Hydrostatic.
What hydraulics does the Kubota B21 have?
The Kubota B21 uses an Open Center hydraulic system.
What three-point hitch category does the Kubota B21 use?
The Kubota B21 has a Category I three-point hitch rated to lift 1,014 lb.
How much horsepower does the Kubota B21 have?
The Kubota B21 produces 21 hp from its 3-cylinder engine. Engine displacement is 61.1 ci.
What maintenance does the Kubota B21 require?
Like any tractor, the Kubota B21 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.






