How to Find Engine S/N

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		Y	1	2	3	4	5	6	7	8	9

SECOND DIGIT = PRODUCTION MONTH

MONTH

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

A

C

E

G

L

N

Q

S

U

W

Y

B

D

F

H

K

M

P

R

T

V

X

Z