{"product_id":"merc-972","title":"Mercury MerCruiser Quicksilver Mercathode Controller 8M0100517","description":"\u003ch2\u003eMercury MerCruiser MerCathode Controller — Sterndrive Corrosion Protection\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0100517  |  \u003cstrong\u003eGTIN:\u003c\/strong\u003e 745061921214\u003cbr\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury \/ MerCruiser  |  \u003cstrong\u003eType:\u003c\/strong\u003e MerCathode Electronic Control Unit (Gen III, Black with Red Decal)\u003c\/p\u003e\n\n\u003cp\u003eGenuine Mercury MerCruiser OEM MerCathode controller for selected sterndrive applications. The MerCathode system is an impressed-current corrosion-protection system that actively helps protect underwater drive components from galvanic corrosion. This controller is the electronic control module that regulates the system — it is not the sacrificial anode or the complete MerCathode kit. Supersedes 8M0082462.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser R sterndrive — MerCathode-equipped installations\u003c\/li\u003e\n\u003cli\u003eMerCruiser MR sterndrive — MerCathode-equipped installations\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One sterndrive — MerCathode-equipped installations\u003c\/li\u003e\n\u003cli\u003eMerCruiser Alpha One Gen II sterndrive — MerCathode-equipped installations\u003c\/li\u003e\n\u003cli\u003eMerCruiser Bravo sterndrive — MerCathode-equipped installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eConfirm drive type and existing MerCathode system configuration before ordering. This controller is only compatible with active impressed-current MerCathode installations — not all sterndrive engines are MerCathode-equipped. Do not select by engine displacement alone.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhen This Part Needs Replacement\u003c\/h3\u003e\n\u003cp\u003eReplace the controller when MerCathode system diagnosis indicates the control module has failed, when the system is no longer producing the correct corrosion-protection output, or when the controller or wiring has been physically or electrically damaged.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eBefore replacing the controller, inspect the complete MerCathode system — wiring harness, reference electrode, anode, grounds, and all electrical connections. Corrosion-protection problems can result from wiring, grounding, or electrode issues as well as from controller failure. Verify correct system operation after installation using the applicable Mercury MerCruiser service procedure.\u003c\/p\u003e\n\n\u003ch3\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent OEM: 8M0100517\u003c\/li\u003e\n\u003cli\u003eSupersedes: 8M0082462\u003c\/li\u003e\n\u003cli\u003eGTIN: 745061921214\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe most important clarification with 8M0100517 is that it is the \u003cstrong\u003eelectronic MerCathode controller only\u003c\/strong\u003e — not the anode, electrode, or a complete kit. Customers troubleshooting corrosion-protection issues should test the controller, reference electrode, anode, wiring, and grounding as a complete system before ordering. A common mistake is replacing the controller when the actual issue is a failed electrode or poor ground connection. Also note that not all MerCruiser sterndrive boats are equipped with MerCathode — confirm the system is installed before ordering this part.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":51324693872676,"sku":"8M0100517","price":292.12,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/63da6c33-d71a-4ab4-9811-f2044ac191ec.png?v=1788215813","url":"https:\/\/marisolmarine.com\/products\/merc-972","provider":"Marisol Marine Company","version":"1.0","type":"link"}