Yamaha Bolt - 90109-08240-00. Durable and Reliable Fastening Solution for Yamaha Engines. The Yamaha Bolt - 90109-08240-00 is a high-quality, durable bolt designed to provide secure fastening for various parts of your Yamaha engine. Engineered with precision, this bolt ensures a tight fit and reliable hold, preventing components from loosening over time. With its corrosion-resistant design, it's an essential part for maintaining the structural integrity of your engine.. Key Features. High-Qualit