TM 5-3820-245-14&P
ENGINE MODEL AND SERIAL NUMBER DESIGNATION
Figure 7-4. Typical Model and Serial Numbers as
Stamped on Cylinder Block (In-Line
Engine)
On the In-line engines, the model number and serial number are stamped on the right-hand side of the cylinder block in
the upper rear corner (Fig. 5).
An option plate, attached to the valve rocker cover, is also stamped with the engine serial number and model number and,
in addition, lists any optional equipment used on the engine (Fig. 7).
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.
Power take-off assemblies, torque converters, hydraulic marine gears, etc. May also carry nameplates pertaining to the
particular assembly to which they are attached. The information on these nameplates is useful when ordering parts for
these assemblies.
Figure 7-5 - Option Plate
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