37202-ZW5-025AH 25' BK Speedo Tubing - Overview. The 37202-ZW5-025AH 25' BK Speedo Tubing is a critical component designed for Honda marine engine systems. It functions within the speedometer system, transmitting accurate speed data from the sensor to the gauge for reliable monitoring. Engineered to OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. This is a high-quality OEM rubber hose speedometer tubing, meas