This gear set is compatible with 4-stroke outboard engines including 200HP, 225HP, and 250HP models.It serves as a replacement for lower casing drive components on various years and configurations such as F200XA, F200TXR, F225XA, F225TXR, F225TLR, F250XA, F250TXR, F250TUR, F250BTUR, F250UA, and F250BTXR.This part corresponds to reference numbers 6P2-45560, 6P2-45551, and 6P2-45571.The component is designed to restore equipment function and fitment specifications for the listed engine series.Installation should follow standard mechanical procedures for lower unit assembly.