11871-ZY3-000 R Plate - Overview. The 11871-ZY3-000 R Plate is a genuine OEM Honda marine engine part serving as the right timing belt cover plate. It supports the engine's mechanical system by providing essential protection and mounting support to the timing belt assembly, thereby helping to maintain precise timing and reliable engine operation. Designed specifically for Honda marine engines, this component ensures seamless integration with existing parts, maintaining optimal performance and du