This document pertains to the Volvo Penta D3 Series, specifically the D3-160i-B model, an inline diesel engine designed for marine applications. This engine delivers 160 horsepower and features a common rail injection system, indicative of its modern and efficient design. The D3-160i-B is engineered for reliability and performance, making it a robust choice for various marine vessels. This comprehensive workshop service repair manual provides detailed information essential for the maintenance and repair of the Volvo Penta D3-160i-B engine. It covers general information, engine mechanical and electrical systems, emission control, fuel system, and relevant marine drive and steering systems. Included are detailed maintenance recommendations, troubleshooting guides, and wiring diagrams to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of their engine.