Supplied as part number O.S. Engine OS28206000, this piston pin serves as the wrist pin in GT22-series nitro engines. It provides the mechanical connection between piston and connecting rod and is intended for use during routine service and limited performance tuning on fuel-powered RC models.
Installation notes: inspect the piston boss and the connecting rod small end for wear before fitting. Press the pin in straight, confirm piston clearance in the cylinder, and use a light lubricant suitable for nitro engines to avoid scoring during initial operation.
Durability and tuning notes: renewing a worn pin reduces lateral piston movement and helps prevent cylinder wall damage, which supports sustained compression and consistent engine behavior across operating temperatures. Also review piston rings and the small-end bearing when replacing the pin to prevent future failures.
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