B & S Anodes BSM5RB Rudder Zinc Anode 5 Inch Diameter

B & S Anodes

<h3>About B&amp;S Marine Anodes</h3><p>When it comes to protecting a boat from the relentless threat of galvanic corrosion, few names carry more weight than <strong>B&amp;S Marine Anodes</strong>. Rooted in nearly five decades of hands-on manufacturing experience, B&amp;S traces its origins to Bossler &amp; Sweezey — a Long Island, NY marine hardware company whose founders began hand-pouring zinc anodes back in the 1960s during the slow winter months between propeller jobs. In 2005, that tradition was formalized when the company&#39;s president established B&amp;S Marine Anodes as a dedicated manufacturing entity focused entirely on producing the highest-quality sacrificial anodes available.</p><h3>Made in the USA, Built to Military Spec</h3><p>What sets B&amp;S apart from most competitors is a commitment to craftsmanship that begins with the raw material. Their <a href="/7244-b-s-anodes-anodeszincs-200103">zinc anodes</a> are formulated from a zinc alloy that meets Military Specification MIL-A-18001K — and the company backs that claim with independent lab reports. But meeting the spec on paper is only part of the story. B&amp;S goes further by hand-pouring every anode they make, a process that results in higher porosity compared to die-cast alternatives. That increased porosity means greater surface area is exposed to the surrounding water, allowing the anode to corrode more evenly and efficiently — exactly how a sacrificial anode is supposed to work.</p><p>This approach to manufacturing has made B&amp;S a trusted name among saltwater and brackish-water boaters throughout the tri-state area and beyond, protecting everything from propeller shafts and rudders to outdrives and hull plates on both pleasure craft and commercial vessels.</p><h3>Understanding Sacrificial Anodes</h3><p>Galvanic corrosion occurs when two dissimilar metals are electrically connected in a conductive liquid like seawater. A current flows between them, and the less &quot;noble&quot; metal corrodes. By purposely attaching a sacrificial anode — a metal even less noble than the boat&#39;s critical components — boaters redirect that corrosion to an inexpensive, replaceable piece rather than allowing it to attack propellers, shafts, or outdrives. Zinc has long been the go-to material for saltwater applications, while aluminum anodes suit both salt and brackish water, and magnesium anodes are preferred for freshwater use.</p><h3>Anode Kits for Complete Protection</h3><p>For boaters who want a straightforward, all-in-one solution, B&amp;S offers comprehensive <a href="/7244-b-s-anodes-anode-kits-200102">anode kits</a> designed to cover all the critical corrosion points on popular engine and outdrive configurations. These kits — which include complete attaching hardware and directions — eliminate the guesswork of sourcing individual pieces and ensure every vulnerable component gets proper protection in a single purchase. B&amp;S kits are specifically engineered for popular platforms like Mercury and MerCruiser outdrives, making them a practical choice for a wide range of recreational boaters.</p><h3>A Legacy of Quality</h3><p>B&amp;S Marine Anodes continues to monitor evolving boating industry needs, regularly reviewing new applications and expanding their product line to serve both new and legacy vessel types. Their dedication to hand-poured, USA-made anodes — rather than imported, die-cast alternatives — reflects a philosophy that has driven the brand since those early days on Long Island: when you make a quality product, no gimmicks are needed.</p>