Johnson Evinrude/OMC starboard piston, part numbers 0436859 and 436859, is a replacement piston for the starboard cylinder in Johnson Evinrude outboard motors. It is used during engine rebuilds or maintenance to support correct piston movement within the combustion chamber. Confirm compatibility by cross‑referencing the part numbers 0436859 or 436859 with your engine’s service manual or parts catalog, and ensure you are addressing the starboard cylinder in your multi‑cylinder configuration.
