Yamaha Plug, Blind - 63P-11197-A0-00. Seal Engine Components with Precision and Reliability. The Yamaha Plug, Blind - 63P-11197-A0-00 is an authentic OEM part designed to seal designated passages within your Yamaha engine assembly. This small but vital component ensures your engine maintains proper pressure and prevents fluid or gas leaks in areas where no active flow is required. Built with marine-grade durability, this blind plug helps preserve the efficiency and integrity of internal engine s