06170-ZW4-000AH Tiller Hndle Ext Kit - Overview. The 06170-ZW4-000AH Tiller Handle Extension Kit is an OEM accessory designed to enhance the tiller control system on Honda marine outboard engines. It supports the tiller steering system by providing an extended handle for better reach and comfort during operation. Engineered to meet Honda's exact factory specifications, this kit ensures seamless integration with existing components, maintaining optimal performance and durability.. Key Features. I