General Information
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
option plate.
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
plate.
Power take-off assemblies, torque converters, marine
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.
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