Ensure the reliability and efficiency of your marine engine with the Genuine Yanmar 146623-51103 Plunger Assembly. This authentic OEM part is a critical component of the fuel injection system, meticulously engineered to deliver precise fuel metering for optimal combustion. Designed specifically for the Yanmar 6EY18L engine series, this assembly guarantees perfect fitment and performance, restoring your engine to factory specifications. As a genuine part made in Japan, it upholds the highest standards of quality and durability, ensuring long service life and dependable operation in demanding marine environments. This kit includes the necessary flange components for a complete and straightforward installation.