Engine Identification and Applications CTM100 (06APR04) 01-001-3 P OWER T ECH 10.5 L & 12.5 L Diesel Engines 040604 PN=27 Engine Option Code Label –UN–12JUL99 RG8740 Option Code Label In addition to the serial number plate, OEM engines When in need of parts or service, furnish your have an engine option code label affixed to the rocker authorized servicing dealer or engine distributor with arm cover. These codes indicate which of the engine these numbers. options were installed on your engine at the factory. DPSG,OUO1004,917 –19–30JUN99–1/1 01 001 3