Marine Pencil Zinc Anode with Hex Plug - Heat Exchanger / Cooler Sacrificial Anode - Used

Marine sacrificial pencil zinc anode with hex-head plug, suitable for use in large heat exchangers, oil coolers, aftercoolers, keel coolers, or wet exhaust components on marine diesel engines. Approximately 12 in overall length with a ~1 in diameter zinc rod. Used take-off in serviceable condition — zinc rod retains most of its original mass with only light surface oxidation. No manufacturer markings visible. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.