O.S. Engine OS22014160 Head Gasket (AL0.2) 21XZ-R  [OS22014160]

Head gasket for 21XZ-R

This is an RC-scale head gasket designed for use with the 21XZ-R designation in the product name. The gasket uses the AL0.2 identifier found in the part name to indicate its intended thin-profile sealing characteristic, and it functions as the interface between the engine head and the crankcase on compatible model engines.

Installation notes: remove the old gasket and thoroughly clean mating surfaces before fitting a new unit, align the gasket to the head ports and bolt pattern, and tighten fasteners incrementally and evenly to the engine manufacturer's recommended practice. Avoid overtightening and confirm the head surface is flat and free of residue prior to reassembly.

Tuning and maintenance role: the gasket maintains compression seal and helps preserve consistent combustion space dimensions, so replacing a worn or damaged gasket can stabilise performance and prevent leakage that affects tuning decisions. Inspect the gasket during routine servicing or when compression loss, visible leaks, or inconsistent idle occur.