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

1997199819992000200120022003200420052006200720082009
VWXY123456789
2010201120122013201420152016201720182019202020212022
ABCDEFGHJKLMN

Second Digit = Production Month

JanFebMarAprMayJunJulAugSepOctNovDec
ACEGJLNQSUWY
BDFHKMPRTVXZ
* The letters "I" and "O" are not used in serial numbers

ENGINES MANUFACTURED JUNE 1, 2012 AND AFTER

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 (Including WG)
2 V3 Series
4 SM Series (Including WG)
5 Air Cooled Gasoline
6 GZ, OC, AC, E Series
7 03 Series
8 07 Series

YEAR OF PRODUCTION:

Alphabet 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
H 2017
J 2018
K 2019
L 2020
M 2021
N 2022
P 2023
R 2024
S 2025
T 2026
V 2027

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~BZ999 BA001~BA999 BB001~BB999
February C0001~C9999 D0001~DZ999 DA001~DA999 DB001~DB999
March E0001~E9999 F0001~FZ999 FA001~FA999 FB001~FB999
April G0001~G9999 H0001~HZ999 HA001~HA999 HB001~HB999
May J0001~J9999 K0001~KZ999 KA001~KA999 KB001~KB999
June L0001~L9999 M0001~MZ999 MA001~MA999 MB001~MB999
July N0001~N9999 P0001~PZ999 PA001~PA999 PB001~PB999
August Q0001~Q9999 R0001~RZ999 RA001~RA999 RB001~RB999
September S0001~S9999 T0001~TZ999 TA001~TA999 TB001~TB999
October U0001~U9999 V0001~VZ999 VA001~VA999 VB001~VB999
November W0001~W9999 X0001~XZ999 XA001~XA999 XB001~XB999
December Y0001~Y9999 Z0001~ZZ999 ZA001~ZA999 ZB001~ZB999