Kubota Engine Serial Number Identification
ENGINES MANUFACTURED BEFORE JUNE 2012
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 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 |
| V | W | X | Y | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 |
| A | B | C | D | E | F | G | H | J | K | L | M | N |
| Second Digit = Production Month | ||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| A | C | E | G | J | L | N | Q | S | U | W | Y | |
| B | D | F | H | K | M | P | R | T | V | X | 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.
Engine Serial Number Rule (7 digits)
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
e.g.Standard Engine Serial Number
Engine Series:
| Number | Series |
| 1 | 05 Series(Include:WG) |
| 2 | V3 Series |
| 4 | SM Series(Include:WG) |
| 5 | Air Cooled Gasoline |
| 6 | GZ,OC,AC,E Series |
| 7 | 03 Series |
| 8 | 07 Series |
Year of manufacture:
| Alhpabet or 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 |
（To be continued）
Month of manufacture:
| Month | Sequence number | |
| January | A0001~A9999 | B0001~BZ999 |
| February | C0001~C9999 | D0001~DZ999 |
| March | E0001~E9999 | F0001~FZ999 |
| April | G0001~G9999 | H0001~HZ999 |
| May | J0001~J9999 | K0001~KZ999 |
| June | L0001~L9999 | M0001~MZ999 |
| July | N0001~N9999 | P0001~PZ999 |
| August | Q0001~Q9999 | R0001~RZ999 |
| September | S0001~S9999 | T0001~TZ999 |
| October | U0001~U9999 | V0001~VZ999 |
| November | W0001~W9999 | X0001~XZ999 |
| December | Y0001~Y9999 | Z0001~ZZ999 |
*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.
From: www.Industrialengine.cn
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