O-Ring for Exhaust $ 9.50 SKU: 93210-42728 O-ring for expansion chamber. Back to: Gaskets and O-Rings ×Close Yamaha Yamaha is a leader in businesses ranging from musical instruments and audio & video products to information technology products, new media services, home furnishings, auto components, specialty metals, music education and resort facilities. http://www.global.yamaha.com/ Description Will fit all models 1991 onwards.