Yamaha Xmax 300 Gasket Cylinder Head 1 (B74-E1181-00)

The Yamaha XMAX 300 Gasket Cylinder Head 1 (B74‑E1181‑00) is a critical engine sealing component designed to fit between the cylinder head and adjacent engine parts in the XMAX 300. This gasket helps create a reliable seal for fluid passages and pressure boundaries around the top end of the engine, ensuring that oil, coolant, and combustion forces remain properly contained within their respective circuits.

Made to exact factory specifications, the material and dimensions of this gasket are engineered to withstand repeated thermal cycles, vibration and engine pressure without degrading prematurely. Over time, head gaskets can harden, crack or lose elasticity due to heat and stress, which can lead to leaks, loss of compression, or impaired cooling system performance. Replacing a worn or damaged head gasket with this genuine‑style part restores proper sealing and helps maintain efficient combustion, stable operating temperatures, and overall engine reliability.

Proper sealing at the cylinder head area is essential for optimum engine performance, fuel economy and long‑term durability, making this gasket an important part of engine rebuilds, overhauls or top‑end repairs.