87532-ZV1-C20 Throttle Mark - Overview. The 87532-ZV1-C20 Throttle Mark is an essential component in Honda marine engine throttle systems. This part plays a crucial role in the throttle control system, providing clear marking to aid smooth operation and adjustment of the throttle on Honda marine engines. Designed to meet precise OEM specifications, the throttle mark ensures seamless integration into Honda marine engine systems. It supports reliable and consistent engine performance by maintainin