41112-ZY1-C10 Vertical Shaft - Overview. The 41112-ZY1-C10 Vertical Shaft is a critical OEM component designed exclusively for Honda marine engine systems, specifically for marine applications such as the water pump and vertical power transmission. This vertical shaft plays a vital role in efficiently transmitting mechanical power within the marine engine, ensuring smooth engine function and reliable operation even under demanding conditions. Engineered to meet Honda's factory specifications, th