Zenoah K207521140 Crankcase Gasket for G260PU, G231-260PUH, G231-290PUM  [K207521140]

Crankcase Gasket for Zenoah Two-Stroke RC Engines

This crankcase gasket replaces the sealing element between mating halves of small-scale Zenoah two-stroke RC engine crankcases. It is intended for hobby-grade models and should be treated as an RC-scale spare part, not for full-size engines.

Compatibility is limited to the models listed in the product name: G260PU, G231-260PUH, and G231-290PUM. Confirm the engine code on your model before ordering to ensure a correct match.

Installation notes: inspect the mating surfaces for old gasket residue and damage, clean both faces thoroughly, and fit the gasket flat without stretching. Use a minimal, manufacturer-recommended sealant only if needed, and avoid overtightening fasteners to prevent distortion of the crankcase. After reassembly, check for air or fuel leaks before full-power runs.

Role in tuning and performance: a good crankcase seal helps maintain compression and consistent crankcase pressure, which affects throttle response and idle stability on two-stroke RC engines. Replace gaskets showing hardening, tears, or uneven sealing to keep engine performance predictable.