{"product_id":"martyr-cmx04al-aluminum-streamline-shaft-anode-1-1-8in-194-cmx04al","title":"Martyr CMX04AL Aluminum Streamline Shaft Anode – 1-1\/8\" Shaft | Stainless Allen Screw | Saltwater \u0026 Brackish","description":"\u003ch2\u003eMartyr CMX04AL Aluminum Streamline Shaft Anode\u003c\/h2\u003e\n\u003cp\u003eProtect your 1-1\/8\" prop shaft from galvanic corrosion with this precision-cast aluminum streamline shaft anode. Aluminum is the preferred sacrificial metal for saltwater and brackish water environments — it remains electrochemically active across a wider salinity range than zinc, making it the better choice wherever water salinity varies or drops below full oceanic levels.\u003c\/p\u003e\n\u003cp\u003eThe low-drag, hydrodynamic profile minimizes water resistance while the stainless steel Allen head screw locks the anode firmly in place for a rattle-free fit all season long.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1-1\/8\" (29mm) diameter prop shafts\u003c\/li\u003e\n\u003cli\u003eSaltwater and brackish water use\u003c\/li\u003e\n\u003cli\u003eInboard and inboard\/outboard (I\/O) vessels\u003c\/li\u003e\n\u003cli\u003eReplaces OEM shaft anodes on most standard 1-1\/8\" shaft configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e CMX04AL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 194-CMX04AL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum alloy (sacrificial)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Diameter:\u003c\/strong\u003e 1-1\/8\" (29mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener:\u003c\/strong\u003e Stainless steel Allen head screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile:\u003c\/strong\u003e Streamlined \/ hydrodynamic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Saltwater \u0026amp; brackish water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~150 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAlso Available In\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/martyr-cmx04-zinc-streamline-shaft-anode-1-1-8in-194-cmx04\"\u003eCMX04 – 1-1\/8\" Zinc\u003c\/a\u003e (saltwater)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/cmx04m-sl-shaft-anode-1-1-8-magnesium-194-cmx04m\"\u003eCMX04M – 1-1\/8\" Magnesium\u003c\/a\u003e (freshwater)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdjacent Sizes – Aluminum\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/martyr-cmx03al-aluminum-streamline-shaft-anode-1in-194-cmx03al\"\u003eCMX03AL – 1\" Aluminum Shaft Anode\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/martyr-cmx06al-streamlined-shaft-anode-with-stainless-steel-allen-head-aluminum-194-cmx06al\"\u003eCMX06AL – 1-3\/8\" Aluminum Shaft Anode\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/aluminum-streamline-shaft-anode-1-3-4-cmt-x08al\"\u003eCMT-X08AL – 1-3\/4\" Aluminum Shaft Anode\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe CMX04AL is the best choice for 1-1\/8\" shafts in saltwater and brackish conditions. Aluminum outperforms zinc in mixed or lower-salinity water because zinc can passivate — forming a surface layer that stops it from sacrificing properly — while aluminum stays active. If you’re running in a river estuary, coastal inlet, or any water where salinity fluctuates, aluminum is the safer pick. For full freshwater use, switch to the \u003ca href=\"\/products\/cmx04m-sl-shaft-anode-1-1-8-magnesium-194-cmx04m\"\u003eCMX04M magnesium version\u003c\/a\u003e. Always measure your shaft diameter before ordering — the 1-1\/8\" CMX04AL is a distinct size from the 1\" CMX03AL and the 1-1\/4\" CMX05AL.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":50999089299492,"sku":"194-CMX04AL","price":13.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/194-CMX03_742e641c-add5-422c-aca8-fc69e9539949.jpg?v=1782799285","url":"https:\/\/marisolmarine.com\/products\/martyr-cmx04al-aluminum-streamline-shaft-anode-1-1-8in-194-cmx04al","provider":"Marisol Marine Company","version":"1.0","type":"link"}