11820-ZVL-000 R Timing Belt Cvr - Overview. The 11820-ZVL-000 R Timing Belt Cvr is a crucial component of Honda marine engine systems. It covers and safeguards the timing belt, playing a vital role in maintaining the engine's timing mechanism and overall reliability. Designed specifically for the Honda marine engine system, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This is a genuine Honda OEM Cover Assembly for the right s