16130-ZW4-H01 Auto Bystarter - Overview. The 16130-ZW4-H01 Auto Bystarter is a crucial component within Honda marine engine systems. This part supports the carburetor system by automatically enriching the fuel mixture during cold starts to ensure smooth and efficient engine operation until the engine reaches optimal temperature. Designed precisely to factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM Hon