2026 Mercury Mercruiser 6.2L 300 ECT Inboard

The MerCruiser 6.2L® Inboard engine is made for more. More fun. More excitement. And more time on the water. It’s easy to own and optimized for marine duty, with the torque to get inboard boats on plane and efficiency-enhancing technologies that let you stay out longer. Making great memories has never been easier. Advanced MPI The multi-point electronic fuel injection system fine-tunes the air-to-fuel ratio for the ideal combination of power and efficiency. Adaptive Speed Control The Adaptive Speed Control feature lets you maintain engine rpm despite changes in load or conditions. Climbing large swells is easier. Cruising at low speeds is smoother. Carving out tight turns is effortless. Wide-Band Oxygen Sensors Sensors in the exhaust system continuously monitor oxygen levels, enabling the engine control module to deliver a precise amount of fuel for maximum efficiency. It’s intelligent technology that takes you farther. Ample Charging Output A powerful alternator delivers 70 amps of charging power at wide-open throttle – perfect for keeping onboard electronics running long into the fun. Engine Guardian Explore farther with confidence knowing that the Engine Guardian system is at work. It monitors the engine and, if necessary, can adjust engine functions to help get you home safely. Noise Reduction Hear your friends and family talk. Hear yourself think. Enjoy your time on the water. A MerCruiser engine is still as powerful as ever. Thanks to sound-dampening advancements, it’s just not so loud about it. Performance High-displacement engines and multi-port fuel-injection systems maximize performance from every drop of fuel. You’ll enjoy quick acceleration, instantly responsive power and total fun. Effortless Ownership A redesigned service access has simplified what was once a hassle, bringing all service points to a single easily reachable location, color-coded for owner-friendly maintenance. Durability Through grueling endurance test cycles – in the lab and on the water – Mercury has refined every MerCruiser engine into an unflinching workhorse, built with better alloys and superior paints that can stand up to the harshest conditions.