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

Replacement Crankcase Seal for Zenoah Two-Stroke Engines

This crankcase gasket seals the mating halves of small-scale Zenoah two-stroke RC engine crankcases. It is supplied for hobby models as a replacement spare and is not intended 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 crankcase before ordering to ensure a correct fit.

Installation guidance: remove old gasket residue and inspect both mating faces for nicks or damage, clean thoroughly, and lay the new gasket flat without stretching. Apply only the minimal, manufacturer-recommended sealant if necessary, and torque fasteners evenly to avoid warping the crankcase. After reassembly, run a leak check at low throttle before returning to full-power use.

Performance note: a reliable crankcase seal preserves compression and steady crankcase pressure, which supports consistent throttle response and idle. Replace gaskets that show hardening, cracks, or uneven sealing to maintain predictable engine behavior.