Suzuki DT55C (L) Marine Outboard Engine The Suzuki DT55C (L) is a robust, gasoline-powered outboard engine engineered for reliable boat propulsion in demanding marine environments. As a 4-stroke, 3-cylinder powerhouse, it delivers 55 horsepower (40 kW) of dependable performance, making it a versatile choice for recreational and commercial vessels. Key technical specifications underscore its engineering excellence: with a compact displacement of 891 cm³, the engine weighs just 113 kg (249 lbs), optimizing power-to-weight ratio for enhanced boat handling. It operates efficiently between 5,000 and 5,600 rpm, achieving peak crankshaft output of 55 hp at 5,000 rpm. The aluminum shaft features a 2.18:1 reduction ratio, ensuring smooth torque transmission to the propeller, while the electric start system provides effortless ignition even in humid or cold conditions. Corrosion-resistant aluminum components, including the crankshaft and gears, are housed in a durable green casing with a star-patterned cooling system for optimal thermal management. Marine-specific benefits elevate the DT55C (L) for saltwater and freshwater use. Its lightweight design lowers the vessel’s center of gravity, improving stability and maneuverability, while the inboard-outboard hybrid adaptability minimizes exposure to corrosive elements. Fuel efficiency is maximized through the efficient 3-cylinder layout, reducing consumption during extended cruises without sacrificing power. Maintenance is streamlined via modular construction and clear visual indicators, allowing quick inspections for wear or corrosion. Additionally, the balanced shaft configuration dampens vibration and noise, promoting operator comfort on long outings. Performance characteristics shine in thrust efficiency, with the 20-inch aluminum shaft delivering precise power to the propeller for responsive acceleration and top-end speeds up to 5,600 rpm. This high-RPM capability excels in both low-speed torque for towing and high-speed cruising. Ideal for fishing boats, sport craft, tow vessels, and offshore recreational applications, the Suzuki DT55C (L) combines Suzuki’s renowned reliability with marine-grade durability, ensuring seamless performance across diverse waterway conditions.