The Volvo Penta D3 Series represents a line of robust inline 5-cylinder diesel engines, encompassing models D3-110i B, D3-130i B, D3-160i B, and D3-190i B. These engines, featuring a 2.4-liter displacement, are engineered for reliable performance in marine applications, offering power outputs ranging from 110 hp to 190 hp. They utilize turbocharged, intercooled induction systems and are designed to meet relevant marine emission standards. The D3 Series engines are typically configured with inboard drive systems, often paired with sterndrive or saildrive setups, and employ indirect cooling via a heat exchanger. This Workshop Service Repair Manual provides comprehensive guidance for the Volvo Penta D3 Series engines. It covers essential maintenance procedures, detailed technical and mechanical specifications, diagnostic information, and repair instructions for disassembly, assembly, cleaning, and component description. The manual includes specific details on fluid capacities, coolant types, and maintenance intervals, along with torque curves for each model. Its purpose is to assist owners, mechanics, and technicians in effectively maintaining, troubleshooting, and repairing these engines to ensure optimal performance and longevity.