50516-ZVA-000 Tilt Lock Spring - Overview. The 50516-ZVA-000 Tilt Lock Spring is an essential OEM component in Honda marine engine tilt systems. It provides reliable tension to the tilt lock mechanism, which supports secure positioning of the outboard motor during operation and transport. This spring plays a vital role in maintaining the mechanical integrity and safe function of the tilt system within Honda marine engines.. Key Features. Genuine OEM Honda part ensuring proper fit and compatibili