Product Information: This kit is compatible with Yamaha outboard motors in the 50-90HP range, including both 2-stroke and 4-stroke models. It serves as a replacement for the original equipment manufacturer (OEM) 93101-25M03-00, and also replaces Sierra 18-0587 and Mallory 9-76414. Each lower unit repair typically requires the installation of two seals. Suitable for use in Yamaha trim seal kit applications requiring reliable shaft sealing. High Quality Material: Manufactured to meet performance specifications using durable marine-grade materials. Each seal undergoes pressure testing to verify performance, ensuring durability in demanding marine environments. These seals provide the same quality expected from a professional kit for Yamaha trim seal kit. Efficient Performance: These propeller shaft seals are designed to help maintain gear oil integrity within the lower unit. Proper sealing contributes to efficient power transfer and operation by minimizing fluid loss, which can impact energy efficiency. Helps maintain optimal performance in Yamaha outboard trim systems. Precision Engineering: The seals are manufactured according to the relevant specifications for the compatible Yamaha models and the listed replacement part numbers (93101-25M03-00, 18-0587, 9-76414). Dimensions and sealing surfaces are designed to match intended applications with exacting tolerances, meeting for Yamaha trim seal kit standards. Easy Installation: Designed as a direct replacement to fit the standard grooves in compatible Yamaha lower units, facilitating installation without requiring modifications. Can be installed as part of a complete kit for Yamaha trim seal kit replacement. All purchases are backed by a standard satisfaction guarantee policy.