Zenoah G450PU Crankcase Gasket K281721311 Replacement for RC Engines  [K281721311]

G450PU crankcase gasket replacement

This Zenoah K281721311 crankcase gasket is an RC-scale spare made specifically for the Zenoah G450PU engine. It creates a reliable sealing surface between the crankcase halves to preserve internal pressure balance and oil retention for nitro RC engines.

Fit this gasket when rebuilding the engine case, if you notice oil seeping at the crankcase joint, or after repeated disassembly. Before installation, clean both mating faces thoroughly, remove old gasket residue, and check the crankcase for any warping or damage. Carefully align the gasket with bolt holes and locating features to prevent pinching or misalignment that can lead to leaks.

Do not assume additional components are required; follow the engine manufacturer's bolt sequence and torque values when assembling, and run the engine at low throttle to confirm sealing before normal operation. A proper seal can affect carburetion response and idle consistency, so include gasket condition in your tuning checks.