Martyr CMBRAVO23KITZ Zinc Anode Kit – MerCruiser Bravo II & III | Saltwater
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Martyr Zinc Anode Kit for MerCruiser Bravo II & III — Saltwater
A complete set of sacrificial anodes for MerCruiser Bravo II and early Bravo III sterndrives, formulated in zinc alloy for saltwater use. This kit covers the three primary corrosion exposure points on the Bravo II/III drive — trim tab, driveshaft housing, and trim rams — so you can complete a full anode service in one order.
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)
- CM821630C2 — Driveshaft Housing Anode (1)
- CM806190 — Trim Ram Anode (2)
Part Information
- Part Number: CMBRAVO23KITZ
- Brand: Martyr Anodes
- Anode Material: Zinc
- Kit Type: Complete Drive Anode Kit
- Best Use: Saltwater environments
Compatible Applications
- MerCruiser Bravo II Sterndrive — 1989 to present
- MerCruiser Bravo III Sterndrive — 1989 to 2003
- Saltwater operating environments
Choosing the Right Alloy
- Zinc (this kit) — Saltwater use
- Aluminum — CMBRAVO23KITA — Saltwater and brackish water; best all-around choice for mixed conditions
- Magnesium — CMBRAVO23KITM — Freshwater use only
- Seachoice Bravo II/III Aluminum Anode Kit — Alternate aluminum option for saltwater
- Seachoice Bravo II/III Magnesium Anode Kit — Alternate magnesium option for freshwater
Related Products
- Seachoice Anode Kit – MerCruiser Bravo III (2004–Present), Aluminum — for newer Bravo III drives
- Martyr CMBRAVO1KITZ Zinc Anode Kit – MerCruiser Bravo I — for Bravo I drives
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 based on surrounding vessels and dock wiring conditions.
Parts Desk Insights
This kit covers all three anode positions on the Bravo II and early Bravo III drive in one purchase — the most efficient way to complete a full anode service. Note that this kit contains three anodes, not four: the Bravo II/III configuration does not use a bearing carrier anode, unlike the Bravo I. The most common ordering mistake is selecting a Bravo I kit for a Bravo II or III drive, so always confirm your drive model before ordering. For boats that move between fresh and salt water, the aluminum CMBRAVO23KITA kit is the more versatile choice — aluminum outperforms zinc in brackish conditions and lasts longer in full saltwater. 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.