SEACHOICE Mercruiser Bravo II/III Anode Kit, Magnesium, One Size — Freshwater Sacrificial Protection, Cadmium-Free

Keeping a drive unit healthy in fresh water requires the right sacrificial metals and properly placed anodes. This complete SEACHOICE kit supplies the replacement zinc-equivalent magnesium anodes and stainless fasteners you need to maintain a Mercruiser Bravo II or Bravo III lower unit without introducing cadmium into the environment. The parts meet Mil-Spec A-21412(SH), are specified for freshwater use, and include all primary wear pieces for ventilation plates, trim rams, skeg area, and the prop/gear housing collar.

Which Mercruiser models and years will this anode kit fit?

The kit is designed specifically for Mercruiser Bravo II drives from 1989 onward and Bravo III drives from 1989 through 2003. Confirm the drive configuration and ventilation-plate layout on your lower unit before ordering to ensure compatibility.

• Bravo II: 1989–present
• Bravo III: 1989–2003
• Matches ventilation-plate and skeg mounting locations
• Includes collar anode that fits between prop and gear housing

What parts are included and how do they protect the drive?

This kit provides all sacrificial components that commonly need replacement on a Bravo lower unit after years of service. Each anode is designed to corrode first, diverting electrochemical attack away from more expensive aluminum and steel hardware in the drive.

• 1 anode plate for the top of the ventilation plate
• 1 skeg-style anode for the ventilation-plate skeg area
• 2 collar anodes for trim rams to protect hydraulic fittings
• 1 prop/gear-housing collar anode positioned between prop and housing
• 18 8/304 stainless steel screws for secure installation

Why choose magnesium and cadmium-free components?

Magnesium offers superior sacrificial protection in fresh water environments compared with other anode metals; it provides a more active electrochemical potential that protects aluminum and steel. SEACHOICE’s cadmium-free formulation meets environmental and safety preferences while conforming to military specification A-21412(SH).

• Magnesium alloy formulated for freshwater use
• Cadmium-free to reduce environmental impact
• Meets Mil-Spec A-21412(SH) for manufacturing consistency
• Designed to replace OEM Bravo II/III anodes reliably

How hard is installation and what tools do I need?

Installation is straightforward for anyone comfortable working on an outdrive; access to the ventilation plate area and prop shaft is required. The kit includes 18 stainless screws so you won’t need to source hardware, and standard hand tools are sufficient for most jobs.

• Basic tools: socket or screwdriver set, torque wrench recommended
• Kit includes all 8/304 stainless fasteners for installation
• Remove old anodes and clean mating surfaces before mounting
• Inspect seals and fasteners while anodes are replaced

Who this kit is for: boat owners, mariners, and service technicians who operate Mercruiser Bravo II and Bravo III drives in fresh water and want a full, environmentally conscious set of replacement anodes. It’s suitable for routine maintenance, pre-season servicing, or when visible anode wear indicates replacement is due. For those who prefer OEM-equivalent longevity without cadmium, this SEACHOICE kit (manufacturer part number 50-95071) supplies a practical, spec-compliant solution with the screws needed for a complete installation.