Kubota D722 Diesel Engine
The Kubota D722 is a compact, reliable three-cylinder water-cooled diesel engine from Kubota’s Super Mini Series, designed for powering small industrial equipment, generators, construction machinery, and agricultural tools. Featuring indirect injection for clean combustion and compliance with EPA/CARB Tier 4 and EU Stage V emissions standards, it delivers up to 18.8 hp at 3,600 rpm with low noise and vibration thanks to E-TVCS (Three Vortex Combustion System) and MoS2-coated pistons. With a displacement of 0.719 L, lightweight design at 63 kg, and seamless upgrades across emission tiers, the D722 offers exceptional fuel efficiency, durability, and versatility for demanding applications requiring consistent performance in tight spaces.
| Manufacturer |
Kubota |
| Model |
D722 |
| Year |
Current (2021-2025 Models) |
| Condition |
New / Varies |
| Engine Type |
Vertical, Water-Cooled, 4-Stroke Diesel |
| Engine Make |
Kubota |
| Engine Model |
D722 (E4B Variant) |
| Cylinders |
3 |
| Bore x Stroke |
2.64 x 2.68 in (67 x 68 mm) |
| Displacement |
43.9 cu in (0.719 L) |
| Gross Power |
18.8 hp (14 kW) @ 3,600 rpm |
| Fuel Type |
Diesel |
| Aspiration |
Naturally Aspirated |
| Combustion System |
E-TVCS (Three Vortex Combustion System) |
| Fuel System |
Bosch MD Mini Injection Pump |
| Max Torque |
33.8 lb-ft (45.8 Nm) @ 2,600 rpm |
| Emissions Compliance |
EPA/CARB Tier 4 Final / EU Stage V |
| Weight (Dry) |
139 lbs (63 kg) |
| Dimensions (L x W x H) |
27.4 x 18.3 x 20.5 in (696 x 465 x 520 mm) |
| Cooling System |
Liquid-Cooled |
| Oil Capacity |
3.4 qt (3.2 L) |
| Coolant Capacity |
3.3 qt (3.1 L) |
| Oil Change Interval |
200 hours |
| Fuel Filter Change Interval |
400 hours |
| Starting System |
Glow Plug Assisted |
| Noise Reduction Features |
Half-Float Valve Cover, MoS2-Coated Pistons |
| Optional Features |
Alternative Fuel Variants (Gas/LPG), PTO Options |
| Safety Features |
Low PM Emissions, Vibration Dampening |
| Applications |
Generators, Construction Equipment, Small Tractors, Industrial Tools |
