I purchased this brand new still in the box YANMAR 4JH57 with a KM35P transmission for my 43' Offshore Auxiliary Sailboat. The engine was manufactured on February 21, 2022, and I purchased it on November 11, 2023. This is a reliable and powerful option for marine diesel inboard use. With a 4-stroke design and 57 HP, it provides efficient and long-lasting performance. The engine is compatible with a variety of boats and is easy to install, making it a great choice for anyone looking to upgrade their vessel's powerplant. This engine is perfect for those who want to add more horsepower to their boat without breaking the bank. It is a great investment for any boat owner who wants to improve the performance of their vessel. I paid $21,500 for this for this 4-cylinder Yanmar Diesel Engine, and I will part with it for $18,500.