IMPORTANT: Always obtain the serial number when possible. The serial number can help determine the engine model and also help determine the correct service parts and changes based on serial number breaks.
OLD FORMAT
4-6 numbers that are sequential with no breaks for production month or year
NEW FORMAT (starting 1997)
Alpha-numeric (e.g. XJ5050 or 4J5050) with breaks for production month and year
First Digit = Production Year
- 1997
- V
- 1998
- W
- 1999
- X
- 2000
- Y
- 2001
- 1
- 2002
- 2
- 2003
- 3
- 2004
- 4
- 2005
- 5
- 2006
- 6
- 2007
- 7
- 2008
- 8
- 2009
- 9
- 2010
- A
- 2011
- B
- 2012
- C
- 2013
- D
- 2014
- E
- 2015
- F
- 2016
- G
- 2017
- H
- 2018
- J
- 2019
- K
- 2020
- L
- 2021
- M
- 2022
- N
Second Digit = Production Month
- Jan
- A
- B
- Feb
- C
- D
- Mar
- E
- F
- Apr
- G
- H
- May
- J
- K
- Jun
- L
- M
- Jul
- N
- P
- Aug
- Q
- R
- Sep
- S
- T
- Oct
- U
- V
- Nov
- W
- X
- Dec
- Y
- Z
* The letters “I” and “O” are not used in serial numbers
Where to find the serial number
The serial number is marked on the specified location per engine series as shown below.
Kubota Super Mini Series
Located on the side of fixing point of injection pump
Kubota 05 Series
Below exhaust manifold
Over crankcase, flywheel side
Kubota 03 Series
Located on the mounting surface of injection pump
Kubota 07 Series
Below intake manifold
Over crankcase, fan side
Kubota V3 Series
Below intake manifold
Over crankcase, flywheel side
Kubota E/EA/EL Series
Mounting surface at gear case side
Kubota OC Series
Mounting surface at fan side
Kubota GS/GR/GH Series
Below the side of cylinder block
Kubota WG Series (WG752/WG972)
Located on the side of fixing point of injection pump
Kubota WG Series (WG1605)
Below exhaust manifold
Over crankcase, flywheel side
Kubota WG Series (WG2503)
Located on the mounting surface of injection pump
All Engines
Over cylinder head of engine
All Models
Do not use the model information shown on EPA labels.
Engine Serial Number Rule
Starting June 1, 2012 the engine serial number will have 7 digits (currently 6 digits) and will be completely unique.
This means that the engine serial numbers are mutually exclusive regardless of production plant.
e.g. Stamped Engine Serial Number
Year of manufacture
- Number
- Year
- 1
- 2001
- 2
- 2002
- 3
- 2003
- 4
- 2004
- 5
- 2005
- 6
- 2006
- 7
- 2007
- 8
- 2008
- 9
- 2009
- A
- 2010
- B
- 2011
- C
- 2012
- D
- 2013
- E
- 2014
- F
- 2015
- G
- 2016
- H
- 2017
- J
- 2018
- K
- 2019
- L
- 2020
- M
- 2021
- N
- 2022
- P
- 2023
- R
- 2024
- S
- 2025
- T
- 2026
- V
- 2027
（To be continued）
Month of manufacture
- Month
- Sequence number
- 1st unit~9999th unit
- 10000th unit~19998th unit
- 19999th unit~20997th unit
- 20998th unit~21996th unit
- January
- A0001~A9999
- B0001~B9999
- BA001~BA999
- BB001~BB999
- February
- C0001~C9999
- D0001~D9999
- DA001~DA999
- DB001~DB999
- March
- E0001~E9999
- F0001~F9999
- FA001~FA999
- FB001~FB999
- April
- G0001~G9999
- H0001~H9999
- HA001~HA999
- HB001~HB999
- May
- J0001~J9999
- K0001~K9999
- KA001~KA999
- KB001~KB999
- June
- L0001~L9999
- M0001~M9999
- MA001~MA999
- MB001~MB999
- July
- N0001~N9999
- P0001~P9999
- PA001~PA999
- PB001~PB999
- August
- Q0001~Q9999
- R0001~R9999
- RA001~RA999
- RB001~RB999
- September
- S0001~S9999
- T0001~T9999
- TA001~TA999
- TB001~TB999
- October
- U0001~U9999
- V0001~V9999
- VA001~VA999
- VB001~VB999
- November
- W0001~W9999
- X0001~X9999
- XA001~XA999
- XB001~XB999
- December
- Y0001~Y9999
- Z0001~Z9999
- ZA001~ZA999
- ZB001~ZB999
*Alphabetical Letters "I"and"O"are not used.
Where to find the serial number
The serial number is marked on the specified location per engine series as shown below.
Kubota Super Mini Series
Located on the side of fixing point of injection pump
Kubota 05 Series
Below exhaust manifold
Over crankcase, flywheel side
Kubota 05 Series（CRS）
Below exhaust manifold
Over crankcase, flywheel side
Kubota 03 Series
Located on the mounting surface of injection pump
Kubota 07 Series
Below intake manifold
Over crankcase, fan side
Kubota V3 Series
Below intake manifold
Over crankcase, flywheel side
Kubota 09 Series
Below intake manifold
Kubota EA/EL Series
Mounting surface at gear case side
Kubota OC Series
Mounting surface at fan side
Kubota WG Series (WG752/WG972)
Located on the side of fixing point of injection pump
Kubota WG Series (WG1605)
Below exhaust manifold
Over crankcase, flywheel side
Kubota WG Series (WG1903)
Located on the mounting surface of injection pump
Over crankcase, flywheel side
Kubota WG Series (WG2503)
Located on the mounting surface of injection pump
Kubota WG Series (WG3800)
Below intake manifold
Over crankcase, flywheel side
All Engines
Over cylinder head of engine
All Models
Do not use the model information shown on EPA labels.
