{"product_id":"aluminum-anode-kit-for-mercruiser-bravo-iii-2004-newer-replaces-oem-888756q01-sierra-18-6158a","title":"Sierra 18-6158A Aluminum Anode Kit for Alpha One Gen II Drives","description":"\u003cp\u003eThe Sierra 18-6158A is an aluminum anode kit built for Alpha One Gen II sterndrives, providing sacrificial corrosion protection for the drive unit in saltwater and brackish-water use. Aluminum anodes are engineered to corrode preferentially to the more expensive metal components of the drive, protecting the housing, gimbal ring, and related hardware from galvanic corrosion caused by stray electrical current and dissimilar-metal contact in the water. Replacing anodes on a regular inspection schedule is one of the simplest ways to prevent costly corrosion damage to a sterndrive.\u003c\/p\u003e\u003cp\u003eThis kit is manufactured by Sierra, a supplier of engine and drive components engineered to meet or exceed the original equipment parts they replace. Each anode in the kit is made from aluminum, a common choice for boats that operate in saltwater or brackish water where a more active sacrificial metal is needed to protect the drive.\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 18-6158A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Anode Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.56 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282277253\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Alpha One Gen II\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eAlpha One Gen II sterndrives\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat drive does the Sierra 18-6158A anode kit fit?\u003c\/strong\u003e The Sierra 18-6158A aluminum anode kit is designed for Alpha One Gen II sterndrives.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the anodes made from?\u003c\/strong\u003e The 18-6158A kit is made from aluminum, which is commonly used for anodes that need active sacrificial protection in saltwater or brackish water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-6158A anode kit?\u003c\/strong\u003e This kit is white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-6158A anode kit weigh?\u003c\/strong\u003e The Sierra 18-6158A anode kit weighs 2.56 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the anodes in this kit?\u003c\/strong\u003e Each anode in the 18-6158A kit measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit include any OEM cross-reference numbers?\u003c\/strong\u003e No OEM cross-reference or replacement numbers are listed for the Sierra 18-6158A; it is identified solely by its Sierra part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy use aluminum anodes instead of zinc?\u003c\/strong\u003e Aluminum anodes, like those in the 18-6158A kit, are typically chosen for boats operating in saltwater or brackish water because aluminum corrodes more readily than zinc in those conditions, offering more active protection for the Alpha One Gen II drive.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow often should the anodes in this kit be replaced?\u003c\/strong\u003e Anodes such as the Sierra 18-6158A should be inspected regularly and replaced once significantly corroded, since a depleted anode can no longer protect the Alpha One Gen II drive from galvanic corrosion.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-6158A a genuine Sierra part?\u003c\/strong\u003e Yes, the 18-6158A anode kit is manufactured by Sierra and is backed by Sierra's standard customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-6158A kit?\u003c\/strong\u003e The Sierra 18-6158A is sold as a complete anode kit for the Alpha One Gen II drive, containing the aluminum anodes needed for a replacement.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988353757403,"sku":"SIE-18-6158A","price":92.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sie-18-6158a_lg__50768.1598556367.500.750.jpg?v=1785188270","url":"https:\/\/www.goodvibesmarina.com\/products\/aluminum-anode-kit-for-mercruiser-bravo-iii-2004-newer-replaces-oem-888756q01-sierra-18-6158a","provider":"Good Vibes Marina","version":"1.0","type":"link"}