Volvo Penta D6-310I-C Marine Engine The Volvo Penta D6-310I-C is a high-performance in-line 6-cylinder diesel engine engineered for dependable marine propulsion, powering a wide range of vessels with precision and efficiency. As part of Volvo Penta’s renowned D6 series, introduced in 2008 and continuing in production, this 5.5-liter powerhouse delivers 310 horsepower (228 kW) at the crankshaft, making it an ideal choice for demanding aquatic environments. Key technical specifications underscore its advanced engineering: a common-rail fuel injection system ensures precise high-pressure delivery for optimal combustion, while a scroll-type turbocharger and innovative CorPower air intake with two-stage intercooling enhance thermal efficiency and boost power output. The engine adheres to stringent Tier 3 emissions standards, minimizing environmental impact through reduced NOx and particulate matter. Its bulletproof design—featuring an opposed-piston-inspired configuration—eliminates shear forces on the crankshaft, promoting exceptional durability with marine-grade, corrosion-resistant materials and an advanced cooling system to withstand saltwater exposure. In marine applications, the D6-310I-C excels with marine-specific benefits like superior vibration and noise dampening for enhanced onboard comfort, low-maintenance intervals due to its friction-reduced architecture, and impressive fuel economy that lowers operational costs without compromising performance. This translates to reliable, scalable operation across diverse hull types, from planing to displacement designs. Performance characteristics include smooth power delivery across a broad RPM range, enabling agile acceleration and sustained cruising speeds with minimal throttle response lag. Proven in harsh conditions—from coastal patrols to deep-sea transits—it’s trusted for its longevity and minimal downtime. Ideal for medium-sized pleasure yachts, sportfishing boats, and offshore workboats, the D6-310I-C embodies Volvo Penta’s commitment to engineering excellence, blending raw power with sustainable, user-centric marine propulsion.