37203-ZW5-080ZA V3 BK 80 MPH SPEEDO - Overview. The 37203-ZW5-080ZA V3 BK 80 MPH SPEEDO is a high-quality speedometer designed specifically for Honda marine engine systems. This part plays a vital role in monitoring the speed of your marine vessel, providing accurate and reliable speed readings up to 80 miles per hour. It supports the marine engine's monitoring system, ensuring that you stay informed about your vessel's operational speed for safe and efficient boating. Designed to match factory