Cylinder Head for GGT10 Engines - OS4A404000 by O.S. Engine  [OS4A404000]

Service replacement for GGT10 cylinder heads

This O.S. Engine OS4A404000 cylinder head is an RC-scale replacement part designated for the GGT10 family. It functions as the top cover for the engine combustion chamber and is intended for routine repair or part refresh on compatible GGT10 engines from O.S. Engine.

Treat this item as a direct replacement: remove the engine head following the engine maker's service procedure, carefully inspect the sealing faces and head gasket, then refit the head using the correct fastener sequence and the torque values specified in the engine manual. Avoid overtightening and confirm adequate clearance for the glow plug and cooling passages.

When used in maintenance or rebuilds, replacing a damaged or warped head can restore consistent compression and sealing. It is also useful when checking piston, sleeve, and carburetor settings to help the engine run reliably in scale RC applications.