How to Read the Engine Serial Number

Serial Number Identification

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.

Where to Find Engine Serial Number

 

Engines Manufactured Before June 2012

Serial Number Format Before 1997

4-6 numbers that are sequential with no breaks for production month or year.

Serial Number Format After 1997-May 2012

Alpha-numeric (e.g., XJ5050 or 4J5050) with breaks for production month and year.

First Digit = Production Year

1997199819992000200120022003200420052006200720082009
VWXY123456789
2010201120122013201420152016201720182019202020212022
ABCDEFGHJKLMN

Second Digit = Production Month

JanFebMarAprMayJunJulAugSepOctNovDec
ACEGJLNQSUWY
BDFHKMPRTVXZ

* The letters “I” and “O” are not used in Kubota engine serial numbers.

 

 

Engines manufactured June 1, 2012, and after

Engines produced after June 1, 2012, have 7 digits and are completely unique. This means that the engine serial numbers are mutually exclusive regardless of production plant.

Examples of Kubota Engine Serial Numbers

 

 

 

 

Engine Series

NumberNumber Series
105 Series (including WG)
2V3 Series (including WG)
F05 Series (CRS)
G09 Series
4SM Series (including WG)
5Air Cooled Gasoline
6GZ, OC, AC, E Series
703 Series (including WG)
807 Series

Year of Production

Letter or NumberYear
12001
22002
32003
42004
52005
62006
72007
82008
92009
A2010
B2011
C2012
D2013
E2014
F2015
G2016
H2017
J2018
K2019
L2020
M 2021
N 2022
P 2023
R 2024
S 2025
T 2026
V 2027

Month of Manufacture

Month1st Unit~9999th Unit10000th Unit~19998th Unit19999th Unit~20997th Unit20998th Unit~21996th Unit
JanuaryA0001~A9999B0001~BZ999BA001~BA999BB001~BB999
FebruaryC0001~C9999D0001~DZ999DA001~DA999DB001~DB999
MarchE0001~E9999F0001~FZ999FA001~FA999FB001~FB999
AprilG0001~G9999H0001~HZ999HA001~HA999KB001~KB999
MayJ0001~J9999K0001~KZ999KA001~KA999KB001~KB999
JuneL0001~L9999M0001~MZ999MA001~MA999MB001~MB999
JulyN0001~N9999P0001~PZ999PA001~PA999PB001~PB999
AugustQ0001~Q9999R0001~RZ999RA001~RA999RB001~RB99
SeptemberS0001~S9999T0001~TZ999TA001~TA999TB001~TB999
OctoberU0001~U9999V0001~VZ999VA001~VA999VB001~VB999
NovemberW0001~W9999X0001~XZ999XA001~XA999XB001~XB999
DecemberY0001~Y9999Z0001~ZZ999ZA001~ZA999ZB001~ZB999

*Alphabetical Letters “I” and “O” are not used.