Top End Gasket Kit/O-Ring Cylinder Head Gasket - Yamaha
Top-end gasket kit includes correct base, head gasket and cylinder O-rings as well as other top-end specific O-rings or seals needed for R&R of top end
Materials will vary depending on what is correct and engineered for specified application
Purchase a top and a bottom-end gasket kit for a complete gasket kit when doing a total engine rebuild