G450PU Crankcase Gasket - Zenoah K281721311 Compatible Spare  [K281721311]

Service gasket for Zenoah G450PU engines

The Zenoah K281721311 crankcase gasket is produced as a direct-fit spare for the Zenoah G450PU RC engine. It supplies the sealing face between crankcase halves to help retain oil and maintain correct internal pressures during operation.

Use this gasket during engine overhauls, when you detect oil tracking from the crankcase seam, or after multiple disassemblies. Prior to fitting, clean both mating surfaces, remove residual gasket material, and inspect the case for distortion or damage. Position the gasket precisely with respect to bolt holes and locating tabs to avoid any misalignment that could cause seepage.

Do not add unspecified parts; observe the engine maker's recommended bolt tightening order and torque settings when assembling the crankcase. Perform a low-throttle break-in run to confirm there are no leaks. A secure seal contributes to stable idle and more predictable carburetor behavior.