GHG17 DD Medium Duty Operators Manual Figure 5. Engine Model and Serial Number Location Engine Model and Serial Number The following information covers the DD8 engine model number and engine serial number. The fourteen-digit engine model and manufacturing serial number is located on the left front of the engine cylinder block. Using 936913C0043228 as an example: 936 = engine model (DD8) 913 = application/high level identifier C = assembly plant (C for Mannheim Germany, S for Detroit Michigan) 0043228 = production serial number All information subject to change without notice. 23 DDC-SVC-MAN-0192 Copyright © 2017 DETROIT DIESEL CORPORATION