Yamaha Bolt, Flange - 90105-06054-00. Secure and Reliable Fastening Solution for Yamaha Engines. The Yamaha Bolt, Flange - 90105-06054-00 is a premium quality fastener designed specifically for Yamaha engines. This flange bolt provides an excellent balance of durability and performance, ensuring that your engine components remain securely in place under various conditions. Whether you're conducting routine maintenance or replacing worn-out parts, this bolt offers a reliable and long-lasting solu