90512-ZX2-C00 Propeller Washer - Overview. The 90512-ZX2-C00 Propeller Washer is a vital component within Honda marine engine systems, designed to provide proper seating and secure attachment for the propeller. This washer plays a crucial role in maintaining smooth propeller function by ensuring the propeller remains fixed and aligned during operation, which helps to optimize thrust and minimize mechanical stress.. Key Features. OEM genuine Honda component ensuring exact fit and performance comp