{"product_id":"aluminum-transom-anode-for-mercury-150-175-200-efi-outboards-replaces-43396a2-sierra-18-6249a","title":"Sierra Aluminum Outboard Anode 18-6249A, Replaces 43396A2, 818298A1, Q1, Fits 175HP\/150EFI\/200EFI Transom Mount Bracket","description":"\u003cp\u003eThe Sierra 18-6249A is an aluminum sacrificial anode built to protect the transom mount bracket on 175HP, 150EFI, and 200EFI outboards (S\/N OG303046 \u0026amp; Up) from galvanic corrosion. As current flows through the metal components of an outboard's lower unit and mounting hardware in saltwater or brackish conditions, a sacrificial anode corrodes in place of the more expensive bracket, propeller, and drive components it protects. Aluminum anodes such as the 18-6249A are commonly chosen for brackish and freshwater use, and they wear away visibly over time, giving boat owners a simple, low-cost way to gauge the health of their corrosion protection system during routine inspections.\u003c\/p\u003e\u003cp\u003eThis anode is a direct fit for the transom mount bracket on the specified engine range and is designed as a bolt-on replacement, making it a straightforward maintenance item to swap during winterization or a seasonal haul-out. Sierra also offers a zinc version of this anode under a separate part number for owners who run primarily in saltwater and prefer zinc's faster sacrificial action; the 18-6249A is the aluminum option.\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 18-6249A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Anode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.54 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282176129\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Transom mount bracket, 175HP\/150EFI\/200EFI (S\/N OG303046 \u0026amp; Up)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits the transom mount bracket on 175HP, 150EFI, and 200EFI outboard engines with serial number OG303046 and up.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003e43396A2, 818298A1, Q1\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-6249A anode fit?\u003c\/strong\u003e It fits the transom mount bracket on 175HP, 150EFI, and 200EFI outboard engines with serial number OG303046 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-6249A made of aluminum or zinc?\u003c\/strong\u003e The 18-6249A is the aluminum version of this transom mount bracket anode. Sierra also sells a zinc version, part number 18-6249, as a separate SKU for buyers who prefer zinc.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this anode replace?\u003c\/strong\u003e Sierra 18-6249A replaces OEM numbers 43396A2, 818298A1, and Q1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-6249A weigh?\u003c\/strong\u003e The anode weighs 0.54 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this anode?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose an aluminum anode over zinc?\u003c\/strong\u003e Aluminum anodes like the 18-6249A are a common choice for brackish and freshwater use, while zinc, such as the alternate 18-6249 part number, is more commonly chosen for saltwater use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-6249A a genuine Sierra part?\u003c\/strong\u003e Yes, 18-6249A is a genuine Sierra manufacturer part number, not a generic or unbranded substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this anode fit an engine outside the S\/N OG303046 range?\u003c\/strong\u003e The 18-6249A is specified for the transom mount bracket on 175HP\/150EFI\/200EFI engines with serial number OG303046 and up; engines outside that serial range are not covered by this listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know when to replace this anode?\u003c\/strong\u003e Sacrificial anodes like the 18-6249A corrode over time in place of the metal components they protect, so visible wear and material loss on the anode indicate it is time for replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-6249A anode?\u003c\/strong\u003e The UPC for the Sierra 18-6249A anode is 808282176129.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988355789019,"sku":"SIE-18-6249A","price":19.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-6249A__37229.1737898078.500.750.jpg?v=1785188350","url":"https:\/\/www.goodvibesmarina.com\/products\/aluminum-transom-anode-for-mercury-150-175-200-efi-outboards-replaces-43396a2-sierra-18-6249a","provider":"Good Vibes Marina","version":"1.0","type":"link"}