Swap out that pitted chunk of metal on your Yamaha lower unit for Sierra’s 6035 Anode (replaces Yamaha # 6J9-45371-01-00) and give corrosion a target that isn’t your gear-case. Cast from Sierra’s premium aluminum alloy, this anode protects in salt, brackish, and even fresh water—ideal for owners who trailer between lakes, rivers, and the coast.

Why Sierra’s 6035 is a smarter shield 

• Mil-Spec aluminum alloy offers 20 % longer service life than traditional zinc while remaining effective in fresh water.

• Direct-fit casting hugs the skeg boss on 50–130 hp Yamaha outboards—no filing or shimming.

• Curved hydrodynamic profile preserves water flow to the prop, keeping hole-shot crisp.

• Raised imprint & Sierra part number make future checks quick—no guessing which anode you installed last season.

Install is as simple as two #10 stainless screws: scrape the mating surface, torque to spec, and you’re done. The anode starts sacrificing itself the minute you hit the water, leaving your paint, seals, and prop shaft untouched. A small switch for big peace of mind—exactly what Sierra owners expect when protecting the hardware that gets them home.