Piston-to-Rod Pin OS49406010 for GF40, O.S. Engine  [OS49406010]

Replacement pin for the GF40 range

This piston pin is supplied as a service part for the GF40 engine family and forms the cylindrical joint between piston and connecting rod in glow engines. The entry is model-number based and provided as a component-level item for routine engine maintenance and repair work.

Fitment instructions are practical in focus: verify the pin enters the piston and small end of the rod cleanly, make sure retention features like circlips or bosses are properly engaged, and clear any machining debris before final assembly. Use light lubricant for the initial fit and avoid forcing the pin to prevent scoring mating surfaces.

Regarding durability and inspection, the piston pin affects alignment and the control of side play within the piston assembly. A properly fitted pin supports consistent compression and reduces premature wear between piston and rod, which helps maintain reliable engine operation during checks and tune-ups.