The Zenoah K216921210 oil seal serves as a replacement sealing component for G240RC and G270RC two-stroke RC engines. It ships without packing and is designed to re-establish crankcase and gearbox sealing during maintenance.
Fit this seal when you find oil seepage or when performing an engine rebuild; it replaces the earlier part number 516653701 in compatible assemblies. The seal provides a straightforward swap where dimensions and shaft conditions match.
Fitting guidance: align the seal square to the shaft and press uniformly to avoid deforming the lip. Clean and inspect the bore and shaft for damage before assembly and use a suitable press or driver tool to avoid nicking the sealing surface.
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