Spare parts for Caterpillar diesel engines. CATERPILLAR Diesel engine C15, C-15, C-16, C16, C-16, C18, C175-16 Parts Catalogs, Service (workshop) Manuals, Operation and Maintenance Manuals in PDF format.Producing reliable power at 830 to 1250 kW at 60Hz, our C32 diesel generator sets are made to meet your standby and prime applications. Caterpillar: Confidential Yellow 5 1 Introduction and Purpose This document is intended to provide the necessary information for correct installation of the following Caterpillar engines into marine engine applications: C7/C9, C12, C18, and C32 Engines covered by this publication have an A4 ECM except for the C12 which has a A3 ECM.