The Volvo Penta D3 Marine Engine represents a robust and reliable power solution for a variety of marine applications. This inline 5-cylinder diesel engine, displacing 2.4 liters, offers a power output range from 110 to 190 horsepower, catering to diverse boating needs. Featuring advanced Common Rail fuel injection and available with either marine heat exchanger or raw water cooling, the D3 is engineered for efficiency and performance while meeting relevant emission standards. Its versatility is further demonstrated through its compatibility with various marine drive systems, including sterndrive, inboard, and saildrive configurations. This Workshop Service Manual (WSM) provides comprehensive guidance for all services and repairs, as well as routine maintenance, for the Volvo Penta D3 Marine Engine. It covers essential procedures such as oil changes, filter replacements, coolant checks, and impeller and belt inspections, ensuring the longevity and optimal performance of your engine. The manual includes detailed technical specifications, wiring diagrams, and troubleshooting information designed to assist owners, mechanics, and technicians in maintaining and repairing the D3 engine effectively.