Volvo Penta D3-130A-B Marine Diesel Engine The Volvo Penta D3-130A-B is a robust, diesel-powered inboard marine engine engineered for reliable propulsion in demanding boating environments. Introduced as part of Volvo Penta’s D3 series, this compact unit delivers consistent power for displacement and semi-displacement hulls, emphasizing efficiency and durability in saltwater or freshwater operations. Key technical specifications include a 5-cylinder inline configuration, producing 122 horsepower (89 kW) at the crankshaft, with diesel fuel compatibility for optimal combustion. Manufactured during a brief production run from 2005 to 2006, the engine features a sterndrive-compatible design, though specific details on displacement, compression ratio, and reduction gearing remain unspecified in available documentation. Its inline layout contributes to balanced operation, while the absence of detailed RPM ranges or cooling system parameters (likely seawater or freshwater variants) underscores the need for manual verification in retrofits. Tailored for marine applications, the D3-130A-B excels in harsh conditions with its diesel architecture, offering superior corrosion resistance, low maintenance requirements, and extended service intervals compared to gasoline counterparts. Without reliance on additives like diesel exhaust fluid (DEF), it simplifies onboard systems and reduces operational complexity for vessel owners. Performance-wise, the engine provides smooth torque delivery and reduced vibration inherent to its 5-cylinder setup—uncommon in this power class—enabling efficient low-RPM trolling and steady cruising speeds without excessive fuel consumption. This balance ensures dependable output for moderate loads, though its short production cycle suggests it was a transitional model, potentially succeeded by later D3 iterations. Ideal for small to mid-sized recreational boats, workboats, or commercial vessels under 40 feet, such as day cruisers or fishing trawlers, the D3-130A-B suits applications prioritizing space efficiency and reliability. Prospective users should confirm parts availability and regulatory compliance (e.g., emissions standards) given its discontinued status, ensuring seamless integration into legacy systems. (248 words)