Martyr CMBRAVO1KITZ Zinc Anode Kit – MerCruiser Bravo I | Saltwater
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Martyr Zinc Anode Kit for MerCruiser Bravo I — Saltwater
A complete set of sacrificial anodes for the MerCruiser Bravo I sterndrive, formulated in zinc alloy for saltwater use. This kit covers all four primary corrosion exposure points on the Bravo I drive — trim tab, bearing carrier, driveshaft housing, and trim rams — so you can complete a full anode service in one order without hunting for individual pieces.
Zinc is the traditional choice for saltwater environments. If you operate in freshwater or move between fresh and salt water, see the magnesium and aluminum alternatives linked below.
Kit Contents
- CM762145 — Trim Tab Anode (1)
- CM806188 — Bearing Carrier Anode (1)
- CM821630C2 — Driveshaft Housing Anode (1)
- CM806190 — Trim Ram Anode (2)
Part Information
- Part Number: CMBRAVO1KITZ
- Brand: Martyr Anodes
- Anode Material: Zinc
- Kit Type: Complete Drive Anode Kit
- Best Use: Saltwater environments
Compatible Applications
- MerCruiser Bravo I Sterndrive (1988 and newer)
- Saltwater operating environments
Choosing the Right Alloy
- Zinc (this kit) — Saltwater use
- Aluminum — CMBRAVO1KITA — Saltwater and brackish water; longer service life in mixed conditions
- Magnesium — CMBRAVO1KITM — Freshwater use only
- Seachoice Bravo One Aluminum Anode Kit — Saltwater alternative
Service Interval
Replace all anodes at each annual haulout, or when any individual anode has worn to approximately 50% of its original size — whichever comes first. In high-galvanic marina environments, inspect more frequently as depletion rates can vary significantly based on surrounding vessels and dock wiring.
Parts Desk Insights
A complete kit like this is the most efficient approach to Bravo I anode service — all four exposure points are covered in one purchase, and you avoid the common mistake of replacing only the most visible anode while leaving a depleted one elsewhere on the drive. The most important thing to get right is the alloy: zinc anodes in freshwater won’t corrode fast enough to protect your drive, and magnesium anodes in saltwater will deplete far too quickly. If your boat moves between fresh and salt water, the aluminum CMBRAVO1KITA kit is the most versatile option. Replace all anodes together as a set for consistent protection across the full service interval.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.