{"product_id":"zinc-transom-bracket-anode-for-johnson-evinrude-60-300hp-1987-1992-replaces-oem-433458-sierra-18-6115","title":"Sierra Zinc Anode 18-6115 for Johnson\/Evinrude Stern Bracket, Replaces 433580, Fits 60-225 HP (1991-93)","description":"\u003cp\u003eThe Sierra 18-6115 is a zinc sacrificial anode designed for mounting on the stern bracket of Johnson\/Evinrude (OMC\/BRP) outboards rated 60-225 HP (1991-93). As a sacrificial anode, it corrodes preferentially in place of the surrounding underwater metal components, protecting the stern bracket and adjacent hardware from galvanic corrosion caused by electrochemical reaction with the surrounding water and dissimilar metals.\u003c\/p\u003e\u003cp\u003eThis anode is built from zinc, which is the correct anode material for saltwater-only applications. Zinc anodes wear away over time as they perform their protective function, so periodic inspection and replacement is part of normal outboard maintenance in saltwater use. The Sierra 18-6115 is a direct replacement for OEM part number 433580, allowing straightforward like-for-like replacement on compatible stern brackets.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-6115\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Zinc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Stern Bracket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Water Type:\u003c\/strong\u003e Saltwater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Johnson\/Evinrude (OMC\/BRP) outboards, 60-225 HP (1991-93)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.55 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282145132\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude (OMC\/BRP) outboards, 60-225 HP, 1991-93, for use on Stern Bracket\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e433580\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-6115 anode made of?\u003c\/strong\u003e It is a zinc anode. Zinc is the recommended anode material for saltwater-only applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the 18-6115 anode fit?\u003c\/strong\u003e The Sierra 18-6115 fits Johnson\/Evinrude (OMC\/BRP) outboards rated 60-225 HP, model years 1991-93, on the stern bracket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere does this anode mount?\u003c\/strong\u003e The 18-6115 is designed for use on the stern bracket of the outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Sierra 18-6115 replace?\u003c\/strong\u003e It replaces OEM part number 433580.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-6115 zinc anode be used in freshwater?\u003c\/strong\u003e No. Zinc anodes are intended for saltwater-only applications; a magnesium anode is used for freshwater, and an aluminum anode is used for brackish or mixed fresh\/salt environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-6115 anode weigh?\u003c\/strong\u003e The Sierra 18-6115 stern bracket anode weighs 1.55 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does an outboard need a stern bracket anode?\u003c\/strong\u003e A sacrificial anode like the 18-6115 corrodes in place of the surrounding metal, protecting the stern bracket and nearby components from galvanic corrosion in the water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-6115 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-6115 is Sierra's own manufacturer part number for this stern bracket anode.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between zinc, magnesium, and aluminum anodes?\u003c\/strong\u003e Zinc anodes, like the Sierra 18-6115, are for saltwater use only; magnesium anodes are for freshwater use only; aluminum anodes are used in brackish water or when a boat operates in both fresh and saltwater.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat years and horsepower range does the 18-6115 cover?\u003c\/strong\u003e The Sierra 18-6115 is specified for 60-225 HP Johnson\/Evinrude outboards from 1991-93.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988350644443,"sku":"SIE-18-6115","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-6115_lg__32084.1678118298.500.750.jpg?v=1785329195","url":"https:\/\/www.goodvibesmarina.com\/products\/zinc-transom-bracket-anode-for-johnson-evinrude-60-300hp-1987-1992-replaces-oem-433458-sierra-18-6115","provider":"Good Vibes Marina","version":"1.0","type":"link"}