GT22 Piston Pin Replacement OS28206000 for GT22 - O.S. Engine  [OS28206000]

Service 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 functions as the wrist pin linking piston and connecting rod and is provided as a service part for routine engine maintenance and modest 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. Apply light lubrication compatible with nitro engine service during assembly to avoid initial scoring.

Tuning and maintenance role: replacing a worn piston pin can reduce piston wobble and help prevent 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 maintain stable engine performance across heat cycles.