April 2009

Engine Serial Number Locations by Engine Model

Small Bore & Large Bore Diesel

L3E & L2E

SL Series

SK Series

S4Q2

S4S & S6S

S6A3

S6B3

S12H

S16R

S12A2

S6R

S12R

S6U

S12U & S16U

Manufacturing Date

L Series

The manufacturing date code in stamped on the injection pump mount (upper side of tie rod cover) of the cylinder block. Next to the engine serial number. *See below for manufacturing date code reference chart.

SL Series

The manufacturing date code is stamped on the top of the face of the fuel injection pump bracket on the right hand side of the engine block. Next to the engine serial number. *See below for date of manufacturing date code reference chart.

SQ Series

The manufacturing date label is located on the rocker cover, next to the oil filler cap.

SS Series

The manufacturing date label is located on the rocker cover, next to the oil filler cap.

Manufacturing Date Codes

All Engines Produced after April 2011 will have the below label. This label will be applied to the rocker cover.