87131-ZW5-A00 Side Mark - Overview. The 87131-ZW5-A00 Side Mark is a genuine OEM part designed specifically for Honda marine engine systems. This side mark functions as a crucial identification component within the rigging and accessories system of Honda outboards, ensuring seamless integration with existing parts, preserving the equipment's reliability, appearance, and operational clarity.. Key Features. Precisely manufactured OEM component meeting Honda's factory specifications for fit and durability.. Serves as a side marker for marine engine identification, enhancing clear visibility and recognition.. Constructed with durable materials built to withstand harsh marine environments.. Designed for clean integration with engine casing and existing rigging accessories.. Maintains system integrity by ensuring proper placement and marking on the engine.. Supports optimal operation by providing visible identification without interfering with mechanical functions.. Why Choose Genuine OEM. U