Kubota engines

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Kubota engines are diesel and spark ignition engines manufactured by Kubota Corporation. Besides gasoline-fueled for spark ignition engines, the company produces dual fuel, LPG-fueled, and natural-gas-fueled engines as well. The engines are widely used in various forms, such as: agricultural equipments, construction equipments, gensets, tractors, and marine propulsion. Beta Marine,[1] an international company providing marine propulsion engines, uses various Kubota engines for fresh water and sea-going boats of various sizes.

Engine Codes[edit]

Kubota has produced a wide variety of engines, from single cylinder to inline six engines; gasoline, dual fuel, LPG, and diesel; from the tiny 0.276 liter Kubota OC60-E to the large 6.1 liter V6108-CR-TI. The company follows a simple naming system for their engines:

1. The first characters mainly specify the engine cylinder configuration; however, in some engines, they also specify fuel type, and cooling system:

Code Feature
E Single cylinder diesel, horizontal, liquid-cooled
Z Two cylinder diesel, inline, vertical, liquid-cooled
D Three cylinder diesel, inline, vertical, liquid-cooled
V Four cylinder diesel, inline, vertical, liquid-cooled
F Five cylinder diesel, inline, vertical, liquid-cooled
S Six cylinder diesel, inline, vertical, liquid-cooled
WG Gasoline fueled, vertical, liquid-cooled
DF Dual-fueled (gasoline and LPG), vertical, liquid-cooled
DG LPG fueled, vertical, liquid-cooled
OC Air/oil-cooled single cylinder diesel, vertical
RD Single cylinder diesel, horizontal, liquid-cooled
Note: Exception is for V3 Series. For the engines in these series, the first character denotes the cylinder configuration (4-cylinder inline), the first two digits denote engine series (V3), and then the four numbers following the first character (3xxx) denote engine displacement.

2. The next two numbers specify the engine displacement

3. The next one or two numbers - and "-M" for some engines - specify the engine series:

Code Diesel Engine Series
2 Super Mini Series
05 Super 05 Series
02 02 Series (discontinued)
03 03 Series
03-M 03-M Series
07 07 Series
08 08 Series
09 09 Series (introduced in mid-2017)
Code Gasoline/LPG/Natural Gas Engine Series
2 New Super Mini (NSM) Series, based on the Super Mini Series diesel
05 05 Series, based on the Super 05 Series diesel
03 03 Series, based on the 03 Series diesel
WG3800 Gasoline/LPG/Natural Gas version based on the V3 Series diesel

4. The suffix (separated by a dash or dashes) specifies the features of the engine:

Code Feature
T Turbocharged (without this code means normally-aspirated)
DI Direct injection (without this code means indirect injection)
CR Common-rail direct injection system
I Intercooled
B Emission: early industrial diesel and early gasoline
EB Emission: Tier 1 industrial diesel
E2B Emission: Tier 2 industrial diesel
E3B Emission:
Under 19 kW Tier 4 industrial diesel
19–56 kW Tier 4 Interim industrial diesel
Over 56 kW Tier 3 industrial diesel
E4B Emission:
Under 19 kW Tier 4 industrial diesel
19–56 kW Tier 4 industrial diesel
Over 56 kW Tier 4 Interim industrial diesel
BG Emission: earlier diesel generator spec
EBG Emission: Tier 1 diesel generator spec
E2BG Emission: Tier 2 diesel generator spec
E3BG Emission:
Under 19 kW Tier 4 diesel generator spec
19–56 kW Tier 4 Interim diesel generator spec
Over 56 kW Tier 3 diesel generator spec
E Phase-1 gasoline engine
E2 Phase-2 gasoline engine
G(L)-E3 Phase-3 gasoline engine
Note: Sometimes some additional suffixes are added. These suffixes usually denote OEM Name (if the Kubota engines are used by other manufacturers) and Version Number. The numbering and/or character choices used in these suffixes depend on each manufacturer's naming or coding systems.

Some example engine codes:

Z482-E3B
Z = two cylinder inline, liquid-cooled diesel
48 = 480 cc (rounded)
2 = Super Mini Series
No "DI" = indirect injection
No "T" = normally-aspirated
E3B = Tier 4 industrial diesel because Kubota Z482-E3B generates less than 19 kW of power.
V2607-DI-T-E3B
V = four cylinder inline, liquid-cooled diesel
26 = 2,600 cc (rounded)
07 = 07 Series
DI = direct injection
T = turbocharged
E3B = Tier 4 Interim because V2607-DI-T-E3B generates less than 56 kW of power.
V2403-CR-TIE4B
V = four cylinder inline, liquid-cooled diesel
24 = 2,400 cc (rounded)
03 = 03 Series
CR = common-rail direct injection
T = turbocharged
I = intercooled
E4B = Tier 4 because V2403-CR-TIE4B generates less than 56 kW of power.
V3300-T
V (first character) = four cylinder inline, liquid-cooled diesel
V3 (first two digits) = engine series
3300 (four numbers after first character) = engine displacement 3,300 cc (rounded)
No "DI" = indirect injection
T = turbocharged
V1505-T-E2B-KSR/VMR/ACP
V = four cylinder inline, liquid-cooled diesel
15 = 1,500 cc (rounded)
05 = Super 05 Series
T = turbocharged
E2B = Tier 2 industrial diesel
KSR = code for Kaeser equipments
VMR = code for Vermeer equipments
ACP = code for Atlas Copco equipments

Gasoline / LPG / Natural Gas[edit]

WG/DF/DG Series[edit]

Unlike most manufacturers that build their gasoline engines and diesel engines based on different platforms, Kubota builds its gasoline/LPG/NG (natural gas) engines based on its diesel engines. The WG/DF/DG engines are solidly based on Kubota's Super Mini Series, Super 05 Series, 03 Series, and V3 Series diesel engines. This makes most of parts are interchangeable between Kubota's gasoline/LPG/NG engines and diesel engines in the equal engine series. These engines are 3- and 4-cylinder liquid-cooled engines.

Kubota WG/DF/DG Series (gasoline/LPG/NG) engines
Model Cylinders Bore Stroke Displacement Fuel Max Power Max Torque Dry Weight
power @ RPM torque @ RPM
WG752
DF752
3 68 mm
(2.7 in)
68 mm
(2.7 in)
740 cc
(45 cu in)
gas 24.5 hp
(18.3 kW)
3600 RPM 5.7 kg⋅m
(56 N⋅m; 41 lb⋅ft)
2320 RPM 61.7 kg
(136 lb)
LPG 23.5 hp
(17.5 kW)
3600 RPM 5.4 kg⋅m
(53 N⋅m; 39 lb⋅ft)
2400 RPM
WG972-G
WG972-L
WG972-N
3 74.5 mm
(2.93 in)
73.6 mm
(2.90 in)
962 cc
(58.7 cu in)
gas 32.5 hp
(24.2 kW)
3600 RPM 6.9 kg⋅m
(68 N⋅m; 50 lb⋅ft)
2500 RPM 74 kg
(163 lb)
LPG 29.5 hp
(22.0 kW)
3600 RPM 6.6 kg⋅m
(65 N⋅m; 48 lb⋅ft)
1800 RPM 74 kg
(163 lb)
NG 27.4 hp
(20.4 kW)
3600 RPM 6.4 kg⋅m
(63 N⋅m; 46 lb⋅ft)
2100 RPM
DG972 3 74.5 mm
(2.93 in)
73.6 mm
(2.90 in)
(962 cc
(58.7 cu in))
LPG 23.6 hp
(17.6 kW)
3600 RPM 5.7 kg⋅m
(56 N⋅m; 41 lbf⋅ft)
2500 RPM 72 kg (159 lb) (w/ rear end plate)
95.4 kg (210 lb) (w/ SAE flywheel and housing)
WG1005
DF1005
3 75.8 mm
(2.98 in)
73.6 mm
(2.90 in)
996 cc
(60.8 cu in)
gas 32.5 hp
(24.2 kW)
3600 RPM 7.14 kg⋅m
(70.0 N⋅m; 51.6 lbf⋅ft)
2160 RPM 93 kg
(205 lb)
LPG 31 hp
(23 kW))
3600 RPM 6.8 kg⋅m
(67 N⋅m; 49 lbf⋅ft)
2160 RPM)
WG1605-G
WG1605-L
WG1605-N
4 79 mm
(3.1 in)
78.4 mm
(3.09 in)
1,537 cc
(93.8 cu in)
gas 57 hp
(43 kW)
3600 RPM 11.98 kg⋅m
(117.5 N⋅m; 86.7 lbf⋅ft)
2450 RPM 119 kg
(262 lb)
LPG 55 hp
(41 kW)
3600 RPM 12.3 kg⋅m
(121 N⋅m; 89 lbf⋅ft)
2400 RPM 120 kg
(260 lb)
NG 51.5 hp
(38.4 kW)
3600 RPM 11.3 kg⋅m
(111 N⋅m; 82 lbf⋅ft)
2500 RPM
WG2503-G
WG2503-L
WG2503-N
4 88 mm
(3.5 in)
102.4 mm
(4.03 in)
2,491 cc
(152.0 cu in)
gas 61 hp
(45 kW)
2700 RPM 17.54 kg⋅m
(172.0 N⋅m; 126.9 lbf⋅ft)
1950 RPM 212 kg
(467 lb)
LPG 61.7 hp
(46.0 kW)
2700 RPM 18.2 kg⋅m
(178 N⋅m; 132 lbf⋅ft)
1400 RPM
NG 56.9 hp
(42.4 kW))
2700 RPM 16.2 kg⋅m
(159 N⋅m; 117 lbf⋅ft)
1050 RPM
WG3800-G
WG3800-L
WG3800-N
4 100 mm
(3.9 in)
120 mm
(4.7 in)
(3,769 cc
(230.0 cu in))
gas 87.2 hp
(65.0 kW)
2600 RPM 26.4 kg⋅m
(259 N⋅m; 191 lbf⋅ft)
1400 RPM 288 kg
(635 lb)
LPG 93.9 hp
(70.0 kW)
2600 RPM 29.8 kg⋅m
(292 N⋅m; 216 lbf⋅ft)
1250 RPM
NG 87.2 hp
(65.0 kW)
2600 RPM 27.5 kg⋅m
(270 N⋅m; 199 lbf⋅ft)
1200 RPM

Diesel[edit]

Kubota makes both indirect and direct injection diesel. For the indirect injection system, Kubota's proprietary TVCS (Three Vortex Combustion System) obtains an optimum air/fuel mixture by generating three intense swirling air flows (vortexes) within the spherical-combustion (swirl) chamber. The new TVCS added a special concave recess on the piston head to force compression air in the swirl chamber and to smooth combustion gas exhaust. The E-TVCS, based on the new TVCS, is aimed at a drastic emission reduction. E-TVCS produces far less soot, HC and CO thanks to a better match between the injection nozzle throat and the concave recess on the piston head. The injection pump and nozzle are better matched with the combustion chamber to reduce NOx emissions.

As for the direct injection system, Kubota has developed several systems; from the conventional direct injection system (DIS) used in the two-valve per cylinder engine range, E-CDIS (Center Direct Injection System) used in the 3 to 4-valve per cylinder engine range, to the Common-Rail Direct Injection System in the latest generation of Kubota diesels to comply the latest emission regulations. The common-rail direct injection engines may be equipped with Diesel Oxidation Catalyst (DOC) or DOC and Diesel Particulate Filter (DPF).


Kubota Diesel engines
Model Series Cylinders Cooling Comp. Ratio Bore Stroke Displacement Max Power Max Torque Dry Weight Notes
power @ RPM torque @ RPM
EA300-E EA 1 liquid 75 mm
(3.0 in)
70 mm
(2.8 in)
309 cc
(0.3 L; 18.9 cu in)
7.7 hp
(5.7 kW)
3000 RPM horizontal
OC60-E OC 1 air/oil 72 mm
(2.8 in)
68 mm
(2.7 in)
276 cc
(0.3 L; 16.8 cu in)
6.2 hp
(4.6 kW)
3600 RPM vertical
OC95-E OC 1 air/oil 83 mm
(3.3 in)
77 mm
(3.0 in)
416 cc
(0.4 L; 25.4 cu in)
9.5 hp
(7.1 kW)
3600 RPM vertical
RD65H
RD65T
RD 1 liquid 80 mm
(3.1 in)
75 mm
(3.0 in)
376 cc
(0.4 L; 22.9 cu in)
6.5 hp
(4.8 kW)
2200 RPM 2.26 kg⋅m
(22.2 N⋅m; 16.3 lb⋅ft)
1800 RPM horizontal
RD85DI-1B
RD85DI-2B
RD85DIH-1
RD85DI-1S
RD85DI-2S
RD 1 liquid 86 mm
(3.4 in)
84 mm
(3.3 in)
487 cc
(0.5 L; 29.7 cu in)
8.5 hp
(6.3 kW)
2200 RPM 3.08 kg⋅m
(30.2 N⋅m; 22.3 lb⋅ft)
1800 RPM horizontal
RD110DI-2T
RD110DI-2B
RD110DIH-2
RD 1 liquid 92 mm
(3.6 in)
90 mm
(3.5 in)
598 cc
(0.6 L; 36.5 cu in)
11 hp
(8.2 kW)
2400 RPM 3.92 kg⋅m
(38.4 N⋅m; 28.4 lb⋅ft)
1700 RPM horizontal
RD140DI-2T
RD140DIH-2
RD 1 liquid 97 mm
(3.8 in)
96 mm
(3.8 in)
709 cc
(0.7 L; 43.3 cu in)
14 hp
(10 kW)
2400 RPM 5 kg⋅m
(49 N⋅m; 36 lb⋅ft)
1600 RPM horizontal
ET95 ET 1 liquid 21:1 86 mm
(3.4 in)
90 mm
(3.5 in)
522 cc
(0.5 L; 31.9 cu in)
9.5 hp
(7.1 kW)
2400 RPM 3.0 kg⋅m
(29 N⋅m; 22 lb⋅ft)
1800 RPM horizontal
ET110 ET 1 liquid 21:1 92 mm
(3.6 in)
90 mm
(3.5 in)
595 cc
(0.6 L; 36.3 cu in)
11.0 hp
(8.2 kW)
2400 RPM 3.5 kg⋅m
(34 N⋅m; 25 lb⋅ft)
1800 RPM horizontal
RT77 RT 1 liquid 24.5:1 82 mm
(3.2 in)
84 mm
(3.3 in)
443 cc
(0.4 L; 27.0 cu in)
7.7 hp
(5.7 kW)
2400 RPM 2.9 kg⋅m
(28 N⋅m; 21 lb⋅ft)
1600 RPM 86 kg
(190 lb)
horizontal, Swirl Chamber (TVCS).
RT80 plus RT 1 liquid 23:1 84 mm
(3.3 in)
84 mm
(3.3 in)
465 cc
(0.5 L; 28.4 cu in)
8.0 hp
(6.0 kW)
2400 RPM 2.8 kg⋅m
(27 N⋅m; 20 lb⋅ft)
1600 RPM 88 kg
(194 lb)
horizontal, Swirl Chamber (TVCS).
RT90 RT 1 liquid 23:1 86 mm
(3.4 in)
84 mm
(3.3 in)
487 cc
(0.5 L; 29.7 cu in)
9.0 hp
(6.7 kW)
2400 RPM 3.2 kg⋅m
(31 N⋅m; 23 lb⋅ft)
1600 RPM 88 kg
(194 lb)
horizontal, Swirl Chamber (TVCS).
RT90 plus RT 1 liquid 23:1 86 mm
(3.4 in)
84 mm
(3.3 in)
487 cc
(0.5 L; 29.7 cu in)
9.0 hp
(6.7 kW)
2400 RPM 3.0 kg⋅m
(29 N⋅m; 22 lb⋅ft)
1600 RPM 88 kg
(194 lb)
horizontal, Swirl Chamber (TVCS).
RT100 RT 1 liquid 22:1 88 mm
(3.5 in)
90 mm
(3.5 in)
547 cc
(0.5 L; 33.4 cu in)
10.0 hp
(7.5 kW)
2400 RPM 3.6 kg⋅m
(35 N⋅m; 26 lb⋅ft)
1600 RPM 105 kg
(231 lb)
horizontal, Swirl Chamber (TVCS)
RT100-ES RT 1 liquid 22:1 88 mm
(3.5 in)
90 mm
(3.5 in)
547 cc
(0.5 L; 33.4 cu in)
10.0 hp
(7.5 kW)
2400 RPM 3.6 kg⋅m
(35 N⋅m; 26 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Swirl Chamber (TVCS)
RT100 plus RT 1 liquid 22:1 88 mm
(3.5 in)
90 mm
(3.5 in)
547 cc
(0.5 L; 33.4 cu in)
10.0 hp
(7.5 kW)
2400 RPM 3.4 kg⋅m
(33 N⋅m; 25 lb⋅ft)
1600 RPM 105 kg
(231 lb)
horizontal, Swirl Chamber (TVCS)
RT100 plus-ES RT 1 liquid 22:1 88 mm
(3.5 in)
90 mm
(3.5 in)
547 cc
(0.5 L; 33.4 cu in)
10.0 hp
(7.5 kW)
2400 RPM 3.4 kg⋅m
(33 N⋅m; 25 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Swirl Chamber (TVCS)
RT100Di plus RT 1 liquid 18:1 88 mm
(3.5 in)
90 mm
(3.5 in)
547 cc
(0.5 L; 33.4 cu in)
10.0 hp
(7.5 kW)
2400 RPM 3.4 kg⋅m
(33 N⋅m; 25 lb⋅ft)
1600 RPM 105 kg
(231 lb)
horizontal, Direct-injection
RT100Di plus-ES RT 1 liquid 18:1 88 mm
(3.5 in)
90 mm
(3.5 in)
547 cc
(0.5 L; 33.4 cu in)
10.0 hp
(7.5 kW)
2400 RPM 3.4 kg⋅m
(33 N⋅m; 25 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Direct-injection
RT110 RT 1 liquid 21:1 92 mm
(3.6 in)
90 mm
(3.5 in)
598 cc
(0.6 L; 36.5 cu in)
11.0 hp
(8.2 kW)
2400 RPM 4.0 kg⋅m
(39 N⋅m; 29 lb⋅ft)
1600 RPM 109 kg
(240 lb)
horizontal, Swirl Chamber (TVCS)
RT110-ES RT 1 liquid 21:1 92 mm
(3.6 in)
90 mm
(3.5 in)
598 cc
(0.6 L; 36.5 cu in)
11.0 hp
(8.2 kW)
2400 RPM 4.0 kg⋅m
(39 N⋅m; 29 lb⋅ft)
1600 RPM 111 kg
(245 lb)
horizontal, Swirl Chamber (TVCS)
RT110 plus RT 1 liquid 21:1 92 mm
(3.6 in)
90 mm
(3.5 in)
598 cc
(0.6 L; 36.5 cu in)
11.0 hp
(8.2 kW)
2400 RPM 3.8 kg⋅m
(37 N⋅m; 27 lb⋅ft)
1600 RPM 109 kg
(240 lb)
horizontal, Swirl Chamber (TVCS)
RT110 plus-ES RT 1 liquid 21:1 92 mm
(3.6 in)
90 mm
(3.5 in)
598 cc
(0.6 L; 36.5 cu in)
11.0 hp
(8.2 kW)
2400 RPM 3.8 kg⋅m
(37 N⋅m; 27 lb⋅ft)
1600 RPM 111 kg
(245 lb)
horizontal, Swirl Chamber (TVCS)
RT110Di plus RT 1 liquid 18:1 92 mm
(3.6 in)
90 mm
(3.5 in)
598 cc
(0.6 L; 36.5 cu in)
11.0 hp
(8.2 kW)
2400 RPM 3.8 kg⋅m
(37 N⋅m; 27 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Direct-injection
RT110Di plus-ES RT 1 liquid 18:1 92 mm
(3.6 in)
90 mm
(3.5 in)
598 cc
(0.6 L; 36.5 cu in)
11.0 hp
(8.2 kW)
2400 RPM 3.8 kg⋅m
(37 N⋅m; 27 lb⋅ft)
1600 RPM 114 kg
(251 lb)
horizontal, Direct-injection
RT120 RT 1 liquid 21:1 94 mm
(3.7 in)
90 mm
(3.5 in)
624 cc
(0.6 L; 38.1 cu in)
12.0 hp
(8.9 kW)
2400 RPM 4.0 kg⋅m
(39 N⋅m; 29 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Swirl Chamber (TVCS)
RT120-ES RT 1 liquid 21:1 94 mm
(3.7 in)
90 mm
(3.5 in)
624 cc
(0.6 L; 38.1 cu in)
12.0 hp
(8.9 kW)
2400 RPM 4.0 kg⋅m
(39 N⋅m; 29 lb⋅ft)
1600 RPM 114 kg
(251 lb)
horizontal, Swirl Chamber (TVCS)
RT120 plus RT 1 liquid 21:1 94 mm
(3.7 in)
90 mm
(3.5 in)
624 cc
(0.6 L; 38.1 cu in)
12.0 hp
(8.9 kW)
2400 RPM 110 kg
(240 lb)
horizontal, Swirl Chamber (TVCS)
RT120 plus-ES RT 1 liquid 21:1 94 mm
(3.7 in)
90 mm
(3.5 in)
624 cc
(0.6 L; 38.1 cu in)
12.0 hp
(8.9 kW)
2400 RPM 112 kg
(247 lb)
horizontal, Swirl Chamber (TVCS)
RT120Di RT 1 liquid 18:1 94 mm
(3.7 in)
90 mm
(3.5 in)
624 cc
(0.6 L; 38.1 cu in)
12.0 hp
(8.9 kW)
2400 RPM 4.0 kg⋅m
(39 N⋅m; 29 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Direct-injection
RT120Di-ES RT 1 liquid 18:1 94 mm
(3.7 in)
90 mm
(3.5 in)
624 cc
(0.6 L; 38.1 cu in)
12.0 hp
(8.9 kW)
2400 RPM 4.0 kg⋅m
(39 N⋅m; 29 lb⋅ft)
1600 RPM 114 kg
(251 lb)
horizontal, Direct-injection
RT125Di plus RT 1 liquid 18:1 94 mm
(3.7 in)
96 mm
(3.8 in)
666 cc
(0.7 L; 40.6 cu in)
12.5 hp
(9.3 kW)
2400 RPM 4.7 kg⋅m
(46 N⋅m; 34 lb⋅ft)
1600 RPM 111 kg
(245 lb)
horizontal, Direct-injection
RT125Di plus-ES RT 1 liquid 18:1 94 mm
(3.7 in)
96 mm
(3.8 in)
666 cc
(0.7 L; 40.6 cu in)
12.5 hp
(9.3 kW)
2400 RPM 4.7 kg⋅m
(46 N⋅m; 34 lb⋅ft)
1600 RPM 113 kg
(249 lb)
horizontal, Direct-injection
RT140Di plus RT 1 liquid 18:1 97 mm
(3.8 in)
96 mm
(3.8 in)
709 cc
(0.7 L; 43.3 cu in)
14.0 hp
(10.4 kW)
2400 RPM 5.0 kg⋅m
(49 N⋅m; 36 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Direct-injection
RT140Di plus-ES RT 1 liquid 18:1 97 mm
(3.8 in)
96 mm
(3.8 in)
709 cc
(0.7 L; 43.3 cu in)
14.0 hp
(10.4 kW)
2400 RPM 5.0 kg⋅m
(49 N⋅m; 36 lb⋅ft)
1600 RPM 114 kg
(251 lb)
horizontal, Direct-injection
RT155Di plus Thunder RT 1 liquid 18:1 100 mm
(3.9 in)
98 mm
(3.9 in)
769 cc
(0.8 L; 46.9 cu in)
15.5 hp
(11.6 kW)
2400 RPM 5.5 kg⋅m
(54 N⋅m; 40 lb⋅ft)
1600 RPM 112 kg
(247 lb)
horizontal, Direct-injection
RT155Di plus Thunder-ES RT 1 liquid 18:1 100 mm
(3.9 in)
98 mm
(3.9 in)
769 cc
(0.8 L; 46.9 cu in)
15.5 hp
(11.6 kW)
2400 RPM 5.5 kg⋅m
(54 N⋅m; 40 lb⋅ft)
1600 RPM 114 kg
(251 lb)
horizontal, Direct-injection
Z482 Super Mini 2 liquid 67 mm
(2.6 in)
68 mm
(2.7 in)
479 cc
(0.5 L; 29.2 cu in)
13.3 hp
(9.9 kW)
3600 RPM 3.06 kg⋅m
(30.0 N⋅m; 22.1 lb⋅ft)
2600 RPM 53.1 kg
(117 lb)
Z602 Super Mini 2 liquid 72 mm
(2.8 in)
73.6 mm
(2.90 in)
599 cc
(0.6 L; 36.6 cu in)
16.8 hp
(12.5 kW)
3600 RPM 3.9 kg⋅m
(38 N⋅m; 28 lb⋅ft)
2550 RPM 60 kg
(130 lb)
D662 Super Mini 3 liquid 64 mm
(2.5 in)
68 mm
(2.7 in)
656 cc
(0.7 L; 40.0 cu in)
17.3 hp
(12.9 kW)
3600 RPM 63.7 kg
(140 lb)
D722 Super Mini 3 liquid 67 mm
(2.6 in)
68 mm
(2.7 in)
719 cc
(0.7 L; 43.9 cu in)
18.8 hp
(14.0 kW)
3600 RPM 5.1 kg⋅m
(50 N⋅m; 37 lb⋅ft)
2600 RPM 63.1 kg
(139 lb)
D722-T Super Mini 3 liquid 67 mm
(2.6 in)
68 mm
(2.7 in)
719 cc
(43.9 cu in)
Turbocharged version of D722.
D782 Super Mini 3 liquid 67 mm
(2.6 in)
73.6 mm
(2.90 in)
778 cc
(0.8 L; 47.5 cu in)
18.1 hp
(13.5 kW)
3200 RPM 63.5 kg
(140 lb)
D902 Super Mini 3 liquid 72 mm
(2.8 in)
73.6 mm
(2.90 in)
898 cc
(0.9 L; 54.8 cu in)
21.6 hp
(16.1 kW)
3200 RPM 5.8 kg⋅m
(57 N⋅m; 42 lb⋅ft)
2350 RPM 72 kg
(159 lb)
D905 Super 05 3 liquid 72 mm
(2.8 in)
73.6 mm
(2.90 in)
898 cc
(0.9 L; 54.8 cu in)
24.8 hp
(18.5 kW)
3600 RPM 5.8 kg⋅m
(57 N⋅m; 42 lb⋅ft)
2500 RPM 93 kg
(205 lb)
D1005 Super 05 3 liquid 76 mm
(3.0 in)
73.6 mm
(2.90 in)
1,001 cc
(1.0 L; 61.1 cu in)
27.3 hp
(20.4 kW)
3600 RPM 6.22 kg⋅m
(61.0 N⋅m; 45.0 lb⋅ft)
2600 RPM 93 kg
(205 lb)
D1105 Super 05 3 liquid 78 mm
(3.1 in)
78.4 mm
(3.09 in)
1,123 cc
(1.1 L; 68.5 cu in)
26 hp
(19 kW)
3000 RPM 72 kg⋅m
(710 N⋅m; 520 lb⋅ft)
2100 RPM 93 kg
(205 lb)
D1105-T Super 05 3 liquid 78 mm
(3.1 in)
78.4 mm
(3.09 in)
1,123 cc
(1.1 L; 68.5 cu in)
32.8 hp
(24.5 kW)
3000 RPM 9 kg⋅m
(88 N⋅m; 65 lb⋅ft)
2000 RPM 97 kg
(214 lb)
Turbocharged version of D1105.
V1205 Super 05 4 liquid 72 mm
(2.8 in)
73.6 mm
(2.90 in)
1,198 cc
(1.2 L; 73.1 cu in)
33 hp
(25 kW)
3600 RPM 7.41 kg⋅m
(72.7 N⋅m; 53.6 lb⋅ft)
2500 RPM 110 kg
(240 lb)
V1205-T Super 05 4 liquid 72 mm
(2.8 in)
73.6 mm
(2.90 in)
1,198 cc
(1.2 L; 73.1 cu in)
42.5 hp
(31.7 kW)
3600 RPM 9.15 kg⋅m
(89.7 N⋅m; 66.2 lb⋅ft)
2500 RPM 114 kg
(251 lb)
Turbocharged version of V1205
D1305 Super 05 3 liquid 78 mm
(3.1 in)
88 mm
(3.5 in)
1,261 cc
(1.3 L; 77.0 cu in)
29.1 hp
(21.7 kW)
3000 RPM 8.16 kg⋅m
(80.0 N⋅m; 59.0 lb⋅ft)
2000 RPM 95 kg
(209 lb)
Basically, D1305 is a stroked-up D1105.
V1305 Super 05 4 liquid 76 mm
(3.0 in)
73.6 mm
(2.90 in)
1,335 cc
(1.3 L; 81.5 cu in)
36.5 hp
(27.2 kW)
3600 RPM 8.3 kg⋅m
(81 N⋅m; 60 lb⋅ft)
2600 RPM 110 kg
(240 lb)
V1505 Super 05 4 liquid 78 mm
(3.1 in)
78.4 mm
(3.09 in)
1,498 cc
(1.5 L; 91.4 cu in)
35.5 hp
(26.5 kW)
3000 RPM 9.68 kg⋅m
(94.9 N⋅m; 70.0 lb⋅ft)
2150 RPM 110 kg
(240 lb)
V1505-T Super 05 4 liquid 78 mm
(3.1 in)
78.4 mm
(3.09 in)
1,498 cc
(1.5 L; 91.4 cu in)
44.2 hp
(33.0 kW)
3000 RPM 12 kg⋅m
(120 N⋅m; 87 lb⋅ft)
2000 RPM 114 kg
(251 lb)
Turbocharged version of V1505
V1505-CR-T Super 05 4 liquid 78 mm
(3.1 in)
78.4 mm
(3.09 in)
1,498 cc
(1.5 L; 91.4 cu in)
44.3 hp
(33.0 kW)
3000 RPM 12.1 kg⋅m
(119 N⋅m; 88 lb⋅ft)
2000 RPM 169 kg
(373 lb)
Common-rail Turbocharged version of V1505
D1102 02 3 liquid 76 mm
(3.0 in)
82 mm
(3.2 in)
1,116 cc
(1.1 L; 68.1 cu in)
23.5 hp
(17.5 kW)
2600 RPM
D1302 02 3 liquid 82 mm
(3.2 in)
82 mm
(3.2 in)
1,299 cc
(1.3 L; 79.3 cu in)
27.5 hp
(20.5 kW)
2600 RPM
D1402-DI 02 3 liquid 85 mm
(3.3 in)
82 mm
(3.2 in)
1,363 cc
(1.4 L; 83.2 cu in)
29 hp
(22 kW)
2600 RPM 9.1 kg⋅m
(89 N⋅m; 66 lb⋅ft)
V1502 02 4 liquid 76 mm
(3.0 in)
82 mm
(3.2 in)
1,487 cc
(1.5 L; 90.7 cu in)
33 hp
(25 kW)
2600 RPM
V1702-DI 02 4 liquid 82 mm
(3.2 in)
82 mm
(3.2 in)
1,732 cc
(1.7 L; 105.7 cu in)
34 hp
(25 kW)
2600 RPM
V1902 02 4 liquid 85 mm
(3.3 in)
82 mm
(3.2 in)
1,861 cc
(1.9 L; 113.6 cu in)
40 hp
(30 kW)
2600 RPM
F2302-DI 02 5 liquid 84 mm
(3.3 in)
82 mm
(3.2 in)
2,272 cc
(2.3 L; 138.6 cu in)
50 hp
(37 kW)
2600 RPM
S2602 02 6 liquid 82 mm
(3.2 in)
82 mm
(3.2 in)
2,598 cc
(2.598 L; 158.5 cu in)
48 hp
(36 kW)
2600 RPM
S2802 02 6 liquid 85 mm
(3.3 in)
82 mm
(3.2 in)
2,792 cc
(2.8 L; 170.4 cu in)
54 hp
(40 kW)
2600 RPM
D1403 03 3 liquid 80 mm
(3.1 in)
92.4 mm
(3.64 in)
1,393 cc
(1.4 L; 85.0 cu in)
31 hp
(23 kW)
2800 RPM 9.5 kg⋅m
(93 N⋅m; 69 lb⋅ft)
1700 RPM 148 kg
(326 lb)
D1503-M 03-M 3 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
1,499 cc
(1.5 L; 91.5 cu in)
31.9 hp
(23.8 kW)
2800 RPM 9.8 kg⋅m
(96 N⋅m; 71 lb⋅ft)
1600 RPM 148 kg
(326 lb)
D1503-M-DI 03-M 3 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
1,499 cc
(1.5 L; 91.5 cu in)
33.2 hp
(24.8 kW)
2800 RPM 9.8 kg⋅m
(96 N⋅m; 71 lb⋅ft)
1600 RPM 148 kg
(326 lb)
Direct injection version of D1503-M
D1503-M-DI-T 03-M 3 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
1,499 cc
(1.5 L; 91.5 cu in)
43.8 hp
(32.7 kW)
2800 RPM 12.4 kg⋅m
(122 N⋅m; 90 lb⋅ft)
1600 RPM 152 kg
(335 lb)
Direct injection turbocharged version of D1503-M
D1703-M 03-M 3 liquid 87 mm
(3.4 in)
92.4 mm
(3.64 in)
1,647 cc
(1.6 L; 100.5 cu in)
35 hp
(26 kW)
2800 RPM 10.7 kg⋅m
(105 N⋅m; 77 lb⋅ft)
1700 RPM 148 kg
(326 lb)
D1703-M-DI 03-M 3 liquid 87 mm
(3.4 in)
92.4 mm
(3.64 in)
1,647 cc
(1.6 L; 100.5 cu in)
36.7 hp
(27.4 kW)
2800 RPM 10.7 kg⋅m
(105 N⋅m; 77 lb⋅ft)
1700 RPM 148 kg
(326 lb)
Direct injection version of D1703-M
D1803-M 03-M 3 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
1,826 cc
(1.8 L; 111.4 cu in)
37.4 hp
(27.9 kW)
2700 RPM 11.73 kg⋅m
(115.0 N⋅m; 84.8 lb⋅ft)
1600 RPM 151 kg
(333 lb)
D1803-M-DI 03-M 3 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
1,826 cc
(1.8 L; 111.4 cu in)
38.1 hp
(28.4 kW)
2700 RPM 11.8 kg⋅m
(116 N⋅m; 85 lb⋅ft)
1650 RPM 151 kg
(333 lb)
Direct injection version of D1803-M
D1803-CR 03-M 3 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
1,826 cc
(1.8 L; 111.4 cu in)
37.5 hp
(28.0 kW)
2700 RPM 11.83 kg⋅m
(116.0 N⋅m; 85.6 lb⋅ft)
1600 RPM 185 kg
(408 lb)
Common-rail version of D1803-M-DI
D1803-CR-T 03-M 3 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
1,826 cc
(1.8 L; 111.4 cu in)
49.6 hp
(37.0 kW)
2700 RPM 15.35 kg⋅m
(150.5 N⋅m; 111.0 lb⋅ft)
1600 RPM 196 kg
(432 lb)
Turbocharged version of D1803-CR with DPF and DOC
D1803-CR-TI 03-M 3 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
1,826 cc
(1.8 L; 111.4 cu in)
49.6 hp
(37.0 kW)
2700 RPM 15.35 kg⋅m
(150.5 N⋅m; 111.0 lb⋅ft)
1600 RPM 195 kg
(430 lb)
Intercooled version of D1803-CR-T with DOC
V1903 03 4 liquid 80 mm
(3.1 in)
92.4 mm
(3.64 in)
1,857 cc
(1.9 L; 113.3 cu in)
41.6 hp
(31.0 kW)
2800 RPM 13.1 kg⋅m
(128 N⋅m; 95 lb⋅ft)
1700 RPM 180 kg
(400 lb)
V2003 03 4 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
1,999 cc
(2.0 L; 122.0 cu in)
43.7 hp
(32.6 kW)
2800 RPM 13.3 kg⋅m
(130 N⋅m; 96 lb⋅ft)
1750 RPM 180 kg
(400 lb)
V2003-T 03 4 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
1,999 cc
(2.0 L; 122.0 cu in)
59.7 hp
(44.5 kW)
2800 RPM 17.3 kg⋅m
(170 N⋅m; 125 lb⋅ft)
1800 RPM 184 kg
(406 lb)
Turbocharged version of V2003.
V2003-M-T 03-M 4 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
1,999 cc
(2.0 L; 122.0 cu in)
59.7 hp
(44.5 kW)
2800 RPM 17.3 kg⋅m
(170 N⋅m; 125 lb⋅ft)
1800 RPM 184 kg
(406 lb)
03-M Series turbocharged version of V2003.
V2203 03 4 liquid 87 mm
(3.4 in)
92.4 mm
(3.64 in)
2,197 cc
(2.2 L; 134.1 cu in)
49 hp
(37 kW)
2800 RPM 14.7 kg⋅m
(144 N⋅m; 106 lb⋅ft)
1600 RPM 180 kg
(400 lb)
V2203-DI 03 4 liquid 87 mm
(3.4 in)
92.4 mm
(3.64 in)
180 kg
(400 lb)
Direct injection version of V2203.
V2403-M 03-M 4 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
2,434 cc
(2.4 L; 148.5 cu in)
48.9 hp
(36.5 kW)
2700 RPM 16.2 kg⋅m
(159 N⋅m; 117 lb⋅ft)
1600 RPM 184 kg
(406 lb)
V2403-M-T 03-M 4 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
59 hp
(44 kW)
2700 RPM 16.93 kg⋅m
(166.0 N⋅m; 122.5 lb⋅ft)
1900 RPM 188 kg
(414 lb)
Turbocharged version of V2403-M.
V2403-CR-T 03-M 4 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
65.1 hp
(48.5 kW)
2700 RPM 20.2 kg⋅m
(198 N⋅m; 146 lb⋅ft)
1650 RPM 233 kg
(514 lb)
Common-rail version of V2403-M-T with DPF and DOC.
V2403-CR-TI 03-M 4 liquid 87 mm
(3.4 in)
102.4 mm
(4.03 in)
65.1 hp
(48.5 kW)
2700 RPM 20.2 kg⋅m
(198 N⋅m; 146 lb⋅ft)
1650 RPM 232 kg
(511 lb)
Common-rail intercooled version of V2403-M-T with DOC.
F2503-DI 03 5 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
2,499 cc
(2.5 L; 152.5 cu in)
53 hp
(40 kW)
2800 RPM 223 kg
(492 lb)
direct injection
F2503-T 03 5 liquid 83 mm
(3.3 in)
92.4 mm
(3.64 in)
2,499 cc
(2.5 L; 152.5 cu in)
75.6 hp
(56.4 kW)
2800 RPM 227 kg
(500 lb)
turbocharged
F2803 03 5 liquid 87 mm
(3.4 in)
92.4 mm
(3.64 in)
2,746 cc
(2.7 L; 167.6 cu in)
62 hp
(46 kW)
2800 RPM 223 kg
(492 lb)
F2803-DI 03 5 liquid 87 mm
(3.4 in)
92.4 mm
(3.64 in)
2,746 cc
(2.7 L; 167.6 cu in)
64 hp
(48 kW)
2800 RPM 223 kg
(492 lb)
Direct injection version of F2803
V2607-DI-T 07 4 liquid 87 mm
(3.4 in)
110 mm
(4.3 in)
2,615 cc
(2.6 L; 159.6 cu in)
66 hp
(49 kW)
2700 RPM 22.43 kg⋅m
(220.0 N⋅m; 162.2 lb⋅ft)
1600 RPM 235 kg
(518 lb)
turbocharged
V3007-DI-T 07 4 liquid 94 mm
(3.7 in)
110 mm
(4.3 in)
3,053 cc
(3.1 L; 186.3 cu in)
65 hp
(48 kW)
2600 RPM 22.54 kg⋅m
(221.0 N⋅m; 163.0 lb⋅ft)
1650 RPM 263 kg
(580 lb)
turbocharged
V3307-DI-T 07 4 liquid 94 mm
(3.7 in)
120 mm
(4.7 in)
3,331 cc
(3.3 L; 203.3 cu in)
74.3 hp
(55.4 kW)
2600 RPM 27 kg⋅m
(260 N⋅m; 200 lb⋅ft)
1400 RPM 268 kg
(591 lb)
turbocharged
V3300 V3 4 liquid 98 mm
(3.9 in)
110 mm
(4.3 in)
3,318 cc
(3.3 L; 202.5 cu in)
73 hp
(54 kW)
2600 RPM 24 kg⋅m
(240 N⋅m; 170 lb⋅ft)
1400 RPM 241 kg
(531 lb)
V3300-T V3 4 liquid 98 mm
(3.9 in)
110 mm
(4.3 in)
3,318 cc
(3.3 L; 202.5 cu in)
87.4 hp
(65.2 kW)
2600 RPM 29 kg⋅m
(280 N⋅m; 210 lb⋅ft)
1400 RPM 250 kg
(550 lb)
Turbocharged version of V3300.
V3600 V3 4 liquid 98 mm
(3.9 in)
120 mm
(4.7 in)
3,620 cc
(3.6 L; 220.9 cu in)
66.8 hp
(49.8 kW)
2600 RPM 22.6 kg⋅m
(222 N⋅m; 163 lb⋅ft)
1700 RPM 264 kg
(582 lb)
V3600-T V3 4 liquid 98 mm
(3.9 in)
120 mm
(4.7 in)
3,620 cc
(3.6 L; 220.9 cu in)
84.5 hp
(63.0 kW)
2600 RPM 30.4 kg⋅m
(298 N⋅m; 220 lb⋅ft)
1550 RPM 275 kg
(606 lb)
Turbocharged version of V3600.
V3800-DI-T V3 4 liquid 100 mm
(3.9 in)
120 mm
(4.7 in)
3,769 cc
(3.8 L; 230.0 cu in)
99.2 hp
(74.0 kW)
2600 RPM 33.4 kg⋅m
(328 N⋅m; 242 lb⋅ft)
1550 RPM 288 kg
(635 lb)
turbocharged
V3800-CR-T V3 4 liquid 100 mm
(3.9 in)
120 mm
(4.7 in)
3,769 cc
(3.8 L; 230.0 cu in)
99.9 hp
(74.5 kW)
2600 RPM 34.5 kg⋅m
(338 N⋅m; 250 lb⋅ft)
1500 RPM 345 kg
(761 lb)
Common-rail version of V3800-DI-T.
V3800-CR-TI V3 4 liquid 100 mm
(3.9 in)
120 mm
(4.7 in)
3,769 cc
(3.8 L; 230.0 cu in)
114 hp
(85 kW)
2600 RPM 38.3 kg⋅m
(376 N⋅m; 277 lb⋅ft)
1500 RPM 345 kg
(761 lb)
Common-rail intercooled version of V3800-DI-T
V6108-CR-TI 08 4 liquid 118 mm
(4.6 in)
140 mm
(5.5 in)
6,124 cc
(6.1 L; 373.7 cu in)
130, 150, or 170 hp
(97, 112, or 127 kW)
2200 RPM Power depending on engine trim, with 20, 20, or 5 hp (14.9, 14.9, or 3.7 kW) power boost, respectively.
common-rail direct injection turbo-intercooled
V5009-CR-TI 09 4 liquid 5,000 cc
(5.0 L; 305.1 cu in)
210.9 hp
(157.3 kW)
2200 RPM common-rail direct injection turbo-intercooled



EA Series[edit]

The Kubota EA Series is a single-cylinder, horizontal, liquid-cooled diesel engine. Kubota EA Series engines are mainly used for hand tractors and other agricultural equipment.

OC Series[edit]

The Kubota OC Series is a single-cylinder, vertical, air/oil-cooled diesel engine. Unlike other Kubota engines, Kubota OC Series engines rely on oil and air to cool the engines. There is a cooling fan connected to the crankshaft, also fan shroud and ducting to optimize the cooling system further. The Kubota OC Series engines are usually used for small/portable gensets and other light power applications. Some motorcycle enthusiasts use Kubota OC Series engines to power self-built or self-modified small diesel motorcycles due to the light weight and its simple air/oil cooling system.[2]

RD Series[edit]

The Kubota RD Series is a single-cylinder, horizontal, liquid-cooled diesel engine. Its liquid cooling system does not use a radiator; instead, it uses a hopper style cooling system, in which, a coolant reservoir is placed directly on the engine. Kubota RD Series engines are in both indirect (TVCS) and direct injection forms.

Kubota RD Series engines are mainly used to power hand tractors, rice mills, and gensets. However, due to their versatility, many Kubota RD Series engines are also used for sawmill, propelling small boats/sampans, and even self-built light "trucks" in rural areas in some Asian countries.

ET Series[edit]

The Kubota ET Series is a horizontal, 4-Stroke diesel, 2 valves, indirect injection (TVCS), single-cylinder, liquid-cooled diesel engine. Produced 1980–2002.

RT Series[edit]

The Kubota RT Series is a single-cylinder, horizontal, liquid-cooled diesel engine. Its uses a hopper cooling system. Kubota RT Series used indirect injection (TVCS) and direct injection system. Kubota RT Series is second generation from Kubota ET Series. Production: RT, 2002–2008; RT plus, 2008–present; RT Plus Thunder, 2015–Present.

ES is Electric-starter
Plus version is a low-emission and low-consumption version
Thunder is new version throttle, Kubota call KGS-i (KUBOTA Governor System Intelligence)

ZT Series[edit]

The Kubota ZT Series is a single-cylinder, horizontal, liquid-cooled diesel engine. Its uses a hopper cooling system. Kubota RT Series used direct injection system. Kubota ZT Series is third generation from Kubota ET Series.

Super Mini Series[edit]

Kubota developed the world's smallest, multi-cylinder high power density diesel engine series, the Super Mini, in 1983. Starting out with just two models, this series remained a long time favorite for twenty years. In 2003, two new models joined this ever-popular 2- and 3-cylinder series. All Kubota Super Mini Series engines are in indirect injection system (E-TVCS).

The Kubota Super Mini Series engines are mainly used for gensets, small agricultural tractors, lawn mowers, and other light power applications. However, some motorcycle enthusiasts also use them to power self-built or self-modified diesel motorcycles.[3] Aixam, a French automobile manufacturers, uses Kubota Z482 to power some of its micro cars.

The D722-T engine is available only for military use; however, limited numbers of D722-T are available at military surplus.

Super 05 Series[edit]

Kubota Super 05 Series engines are mainly for light to medium-light power applications. Small Kubota tractors, medium-sized lawnmowers, small excavators, medium-light gensets, and special vehicles or utility vehicles are usually equipped with Super 05 Series engines. Some kit car builders[4] also use Kubota Super 05 Series engines to build fuel-efficient kit cars that can reach 70 miles per US gallon (30 km/l) on average. Other builders use Kubota Super 05 Series to repower light 4×4 vehicles.[5] In addition, the SHERP amphibious all-terrain vehicle or Sherp ATV is powered by a 1.5-litre (1,500 cc; 92 cu in) turbocharged Kubota V1505-T-E3B. All Kubota Super 05 Series engines are in indirect injection (E-TVCS) system. Available in 3- and 4-cylinder inline configurations.

The V1505-CR-T is the Common-rail Turbocharged version of the V1505. Introduced in April 23-28, 2018 at 2018 Intermat in Paris, it features a common-rail electronic fuel injection system, Diesel Oxidation Catalyst (DOC), and Diesel Particulate Filter (DPF). The main target of this new engine are special purpose non-road vehicles/machines such as small earth-moving and municipal machines. Although the main purpose of using common-rail electronic fuel injection, DOC, and DPF is to meet the latest emission standard (Stage V Regulation), there are slight increases in both power and torque as well. The addition of those emissions control systems inevitably increases the dry weight of the engine by as much as 55 kilograms (121 lb). Kubota V1505-CR-T is planned to be fully mass produced in 2020.

02 Series[edit]

Kubota 02 Series engines are small to medium sized engines built by Kubota. All Kubota 02 Series engines have 82 mm stroke. Available in 3-, 4-, 5-, and 6-cylinder inline configurations, in both indirect and direct injection systems. This series is now discontinued.

03 Series and 03-M Series[edit]

Kubota 03 Series and 03-M Series engines are mainly used for medium power applications. Medium-sized tractors, construction equipment, gensets, and refrigerated containers are some of them. Some automotive enthusiasts use Kubota 03 Series and 03-M Series engines to power old four-wheelers such as Jeep Willys and CJ2s or 1990's light trucks and SUVs.[6][7] Kubota V2003-T, V2203-DI modified with turbo-intercooler, and V2403-M-T are the popular choices. Their compact size, good torque at low RPM, simplicity, reliability, and fuel efficiency (up to 40–45 miles per US gallon (17–19 km/L) on average) are the strong points making them ideal for engine-swapping.

The Kubota 03 Series and 03-M Series are available in indirect injection system (E-TVCS), direct injection system (DIS), and Common-Rail Direct Injection System (CR). Naturally-aspirated and turbocharged versions are also available. Kubota 03 Series and 03-M Series are manufactured in inline 3-, 4-, and 5-cylinder configurations. All Kubota 03 Series and 03-M Series engines have a 92.4 mm (3.64 in) stroke, except the D1803 and V2403, which have a 102.4 mm (4.03 in) stroke (which is basically a stroked-up design of the original 03 and 03-M Series). Cylinder bores are 80, 83, and 87 mm (3.1, 3.3, and 3.4 in).

The Kubota 03 Series and 03-M Series engines also offer side power take-off (PTO), in response to the trend of increasing hydraulic control devices in industrial machines. It is possible to install a hydraulic pump at two side PTO locations.

07 Series[edit]

The Kubota 07 Series is a totally new concept in engine design developed with various requirements necessary for a wide range of industrial applications. The engine package is smaller than that of the current 2.4 L (0.53 imp gal; 0.63 US gal) engine but yet the displacement is larger. The improved cooling system with a main water gallery and water passages between cylinder bores as a countermeasure against heat load provides high power density, superior endurance and a reliable Kubota 07 Series. The Kubota 07 Series completes Kubota’s seamless range up to 100 horsepower (75 kW).

The New Kubota 07 Series engines have been designed to comply with EPA Interim Tier 4 (Option1) emissions regulations, which are the most stringent in this size range. Meeting emission regulations with minimal additional required devices: NOx is reduced only by mechanical means such as a compactly designed cooled exhaust gas recirculation (EGR) system.

Kubota’s original E-CDIS (Center Direct Injection System) combustion system, renowned for clean combustion in the Kubota V3 (DI) Series, has been renovated. The fuel injection pressure was increased and the combustion chamber was redesigned to achieve a 25% lower particulate matter (PM) level, resulting in a better condition when compared to engines that only meet EPA Tier 3 regulations in this class.

These new engines have been designed to reduce transmitted vibrations and radiated sound, resulting in lower noise levels.

A Side PTO option is available. This engine offers power take-off (PTO) from a gear train located on the flywheel side designed for compact positioning of PTO hydraulic devices. Fan positions are available in two heights to adapt to various equipment configurations.

V3 Series[edit]

The Kubota V3 Series engines are available in both naturally aspirated and turbocharged induction systems. The V3 Series also available in indirect injection, direct injection, and common-rail direct injection. For the indirect injection system, Kubota uses E-TVCS (Three Vortex Combustion System) that has been improved. The airflow, combustion chamber and piston recess were optimized to provide a 25% lower particulate matter (PM) level. For the direct injection system, Kubota uses E-CDIS (Center Direct Injection System) with the injector at the center of the cylinder head. The latest V3 Series generation uses Common-Rail Direct Injection to meet the latest emission regulations.

Available only in 4-cylinder inline configuration, Kubota V3 Series engines are mainly used for gensets, medium-large tractors, medium-large construction equipment, forklifts, and special vehicles. Fan positions are available in two heights to adapt to various equipment configurations.

08 Series[edit]

Kubota 08 Series engine is the largest diesel engine manufactured by Kubota. This engine uses Common-Rail Direct Injection System and 4-valve per cylinder. Turbo and intercooler are standard features. Kubota 08 Series is available only in 4-cylinder inline configuration. Kubota 08 Series engines are used for the large tractors lineup. Up to now, V6108-CR-TI is the largest engine manufactured by Kubota.

09 Series[edit]

Kubota 09 Series engine is the latest generation diesel engine manufactured by Kubota by 2017. This engine uses Common-Rail Direct Injection System and 4-valve per cylinder. Turbo and intercooler are standard features. Kubota 09 Series is available only in 4-cylinder inline configuration. Despite of the smaller displacement than the 08 Series engine, the 09 Series generates more power than the 08 Series. Kubota 09 Series engines are used for the large tractors lineup. Up to now, V5009-CR-TI is the second largest engine manufactured by Kubota. However, V5009-CR-TI is the most powerful engine manufactured by Kubota despite of the smaller displacement than V6108-CR-TI.

References[edit]

  1. ^ Beta Marine "Beta Marine US Ltd.", 2016.
  2. ^ DieselBike.net Forum "Honda Rebel Kubota", March 13, 2015.
  3. ^ DieselBike.net Forum "Kubota Z482 Engine - Low compression", September 19, 2011.
  4. ^ McCornack, Jack. "MAX: Mother's Automotive eXperiment (a high mileage homebuilt for Mother Earth News), 2008.
  5. ^ OrangeTractorTalks Forum "Repowered My Jeep with Kubota Turbodiesel", September 3, 2012.
  6. ^ Bourdon, Stuart. "Diesel Swaps: What About A Kubota? Here's How It Can Be Done", April 27, 2015.
  7. ^ Diesel Bombers Forum "1999 Jeep Wrangler V2203 Build Overview", April 11, 2014.

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