This workshop service repair manual supplement provides comprehensive guidance for the Mercury Mercruiser Gen III Cool Fuel Module, designed for service and repair. It covers a range of powerful engine models, including the 5.0L MPI (Bravo), 350 MAG MPI (Bravo), 6.2L MPI (Bravo), Sterndrive 496 MAG, Inboard 350 MAG MPI, Inboard 6.2L MPI, and Inboard 8.1L (496cid) engines, with specific serial number prefixes identified for compatibility. This manual is an essential resource for maintaining the integrity and performance of your marine propulsion system. The purpose of this English-language manual is to detail the removal, disassembly, assembly, and installation procedures for the Gen III Cool Fuel Module. It also offers critical fuel system troubleshooting and repair guidance, along with cooling system coolant and water flow diagrams. Adhering to the preventive maintenance outlined within will help prevent premature failure and unnecessary repairs, ultimately saving time and money. This document is intended for owners, mechanics, and technicians seeking to effectively maintain and repair their Mercury Mercruiser marine engines.