63715-ZVL-010ZC L Eng NHB14M Cvr - Overview. The 63715-ZVL-010ZC L Eng NHB14M Cvr is an essential cover component within Honda marine engine systems. This cover supports the left lower engine system, shielding critical engine parts from environmental elements and mechanical debris. Crafted to meet precise factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine cover for the left lower engine of the NH