DETROIT DIESEL 53
ENGINE MODEL, SERIAL NUMBER AND OPTION PLATE
Fig. 5 Typical Model and Serial Numbers as
Stamped on Cylinder Block (In-Line Engine)
An option plate, attached to the valve rocker cover, is
On the In-line engines, the model number and serial
also stamped with the engine serial number and model
number are stamped on the right-hand side of the
number and, in addition, lists any optional equipment
cylinder block in the upper rear corner (Fig. 5).
used on the engine (Fig. 7). Where required, a smoke
emission certification plate is installed next to the
With any order for parts, the engine model number
and serial number must be given. In addition, if a type
number is shown on the option plate covering the
equipment required, this number should also be
included on the parts order.
All groups of parts used on a unit are standard for the
engine model unless otherwise listed on the option
gears, etc. may also carry name plates. The
information on these name plates is also useful when
Fig. 7 Option Plate
ordering replacement parts for these assemblies.