O.S. Engine OS28206000 piston pin GT22 replacement part  [OS28206000]

Piston pin for GT22 engines

This piston pin is an RC-scale replacement component supplied under the O.S. Engine OS28206000 designation, intended for use with GT22-series nitro engine assemblies. It serves as the wrist pin that links piston and connecting rod, and is described here as a service part for routine engine maintenance and limited tuning work common to fuel-powered RC models.

Installation notes: inspect the piston boss and small-end bearing or bushing for wear before fitting a new pin, ensure alignment when pressing the pin into place, and confirm free piston movement within the cylinder before final reassembly. Use light lubrication compatible with nitro engine service during assembly to prevent initial scoring.

Tuning and maintenance role: replacing a worn piston pin can reduce piston wobble and limit scoring on the cylinder wall, preserving compression and consistency during run cycles. When changing the pin, also check piston fit, ring condition, and connecting rod play to keep engine performance stable across heat cycles.