{"product_id":"martyr-aluminum-hull-anode-aluminum-strap-cmt-z04aa","title":"Martyr CMT-Z04AA Aluminum Hull Anode with Aluminum Strap – 6\" x 3-1\/2\" x 1\"","description":"\u003ch2\u003eMartyr CMT-Z04AA Aluminum Hull Anode with Aluminum Strap – 6\" × 3-1\/2\" × 1\"\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCMT-Z04AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMartyr Anodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOfficial Part Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHull Anode with Aluminum Strap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eZinc Equivalent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCMT-Z04ZA (zinc strap version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum alloy anode body \/ Aluminum strap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6\" × 3-1\/2\" × 1\" (152 × 89 × 25 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~0.55 kg \/ ~1.2 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHull-mounted galvanic corrosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable Waters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSaltwater and brackish water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat This Anode Does\u003c\/h2\u003e\n\u003cp\u003eThe Martyr CMT-Z04AA is an aluminum hull anode with an integrated aluminum mounting strap. It protects hull-mounted systems and bonded underwater metals from galvanic corrosion by sacrificing itself in place of more critical metal components. The aluminum strap maintains full metal-to-metal electrical continuity between the anode and the hull bonding system, and avoids the mixed-metal concerns that can arise when a zinc or steel strap is used with an aluminum anode.\u003c\/p\u003e\n\u003cp\u003eAluminum anodes are the preferred choice for saltwater and brackish water and outperform zinc in most real-world marine environments due to their more electronegative potential and longer service life.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHull-mounted corrosion protection on inboard and sterndrive vessels\u003c\/li\u003e\n\u003cli\u003eTrim tab and transom areas\u003c\/li\u003e\n\u003cli\u003eBonded underwater metal systems\u003c\/li\u003e\n\u003cli\u003eVessels operating in saltwater or brackish water\u003c\/li\u003e\n\u003cli\u003eInstallations where full aluminum compatibility is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131580395556\"\u003eAluminum Hull Anode CMT-ZHC2AA\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8247496048676\"\u003eMartyr Aluminum Anode Bar CMT-852835A\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFitment Notice\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMounting hole spacing on the strap matches your hull fitting location\u003c\/li\u003e\n\u003cli\u003eClearance on the hull mounting surface for the 6\" × 3-1\/2\" footprint\u003c\/li\u003e\n\u003cli\u003eCompatibility with your vessel’s bonding system\u003c\/li\u003e\n\u003cli\u003eThe CMT-Z04ZA is the zinc-strap version of this same anode — confirm which strap material your installation requires\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAnode body is 50% or more consumed\u003c\/li\u003e\n\u003cli\u003eUneven wear, heavy pitting, or loss of structural integrity\u003c\/li\u003e\n\u003cli\u003eLoss of bonding contact or continuity between anode and strap\u003c\/li\u003e\n\u003cli\u003eRoutine replacement at each haul-out\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMount on a clean, bare metal surface free of paint or coatings\u003c\/li\u003e\n\u003cli\u003eDo not paint or antifoul over the anode body — it must remain exposed to the water to work\u003c\/li\u003e\n\u003cli\u003eEnsure firm electrical contact between strap, fasteners, and hull bonding\u003c\/li\u003e\n\u003cli\u003eTighten mounting hardware securely but do not overtorque into aluminum strap\u003c\/li\u003e\n\u003cli\u003eInspect the bonding system if wear is uneven across the anode surface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eInspect at every haul-out. Replace when the anode is 50% consumed or shows uneven wear. In high-current environments or vessels with active corrosion issues, inspect more frequently. Do not wait until the anode is fully depleted before replacing.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhy choose aluminum over zinc for this anode?\u003c\/strong\u003e\u003cbr\u003eAluminum anodes are more electronegative than zinc in saltwater, which means they provide stronger galvanic protection and last longer. In brackish water, zinc anodes can passivate (form an oxide layer that stops them from corroding properly), while aluminum remains active. For most saltwater and brackish installations, aluminum is the better choice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between CMT-Z04AA and CMT-Z04ZA?\u003c\/strong\u003e\u003cbr\u003eBoth are the same hull anode body in the same 6\" × 3-1\/2\" × 1\" size. The CMT-Z04AA uses an \u003cstrong\u003ealuminum strap\u003c\/strong\u003e; the CMT-Z04ZA uses a \u003cstrong\u003ezinc strap\u003c\/strong\u003e. The aluminum strap version eliminates mixed-metal contact at the mounting point and is preferred where full aluminum compatibility is a concern.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this anode in freshwater?\u003c\/strong\u003e\u003cbr\u003eAluminum anodes are not recommended for freshwater. In freshwater, magnesium anodes are the correct choice. Confirm your operating environment before selecting anode material.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I use thread sealant on the mounting fasteners?\u003c\/strong\u003e\u003cbr\u003eDo not use thread sealants or coatings that would create an electrical barrier between the strap and the hull surface. Electrical continuity at the mounting point is essential for the anode to function correctly.\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe CMT-Z04AA comes up most often when a customer wants to stay fully aluminum throughout the anode installation — aluminum body, aluminum strap, aluminum fasteners — to avoid any mixed-metal contact at the mounting point. That matters on aluminum-hulled vessels and on GRP hulls where the bonding system runs through aluminum fittings. The most common issue is painting over the anode by accident during bottom paint application — once the anode is coated, it stops working. Tape it off or remove it before painting and reinstall after.\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43659342676004,"sku":"CMT-Z04AA","price":40.8,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/19f7406b-edf0-4669-9fed-6613dda7b90a.png?v=1775014149","url":"https:\/\/marisolmarine.com\/products\/martyr-aluminum-hull-anode-aluminum-strap-cmt-z04aa","provider":"Marisol Marine Company","version":"1.0","type":"link"}