17918-ZV1-000 Throttle Cable Grom - Overview. The 17918-ZV1-000 Throttle Cable Grom is a crucial component within Honda marine engine rigging systems. This grommet serves as a sealing and protective element where the throttle cable enters the engine housing, preventing the intrusion of water, dirt, and debris. By ensuring a sealed pathway for the throttle cable, it supports smooth throttle operation and extends the service life of throttle controls. Its design aligns precisely with factory speci