Martyr Bravo II and III Anode Kits CMBRAVO23KIT #:  31976
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Martyr Bravo II and III Anode Kits CMBRAVO23KIT

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Free Shipping This Item qualifies for Free Shipping on orders over $199! More Info...

Aluminum, Magnesium, and Zinc Kits for salt, fresh and brackish water use. For Mercruiser Bravo II 1989 to present, and Bravo III from 1989 to 2003.
More Details...   #31976
From:   US$45.20  to US$71.95 

Martyr Mercruiser Bravo II and III Anode Kits CMBRAVO23KIT

Fits Mercruiser Bravo II 1989 - Present, and Bravo III 1989 - 2003
  • Trim Tab CM762145 x 1
  • Cavitation Plate CM821630C2 x 1
  • Trim Cylinder CM806190 x 2
Note: Bravo III 2004 and newer use the CM865182KITA

Fit the correct anode material for the waters your vessel is operating in As a general rule owner should fit the anodes suitable for the environment they most regularly berth in and the following table provides a useful guide:

Salt Water Fit Zinc or Aluminum Anodes
In Brackish Water Fit Aluminum Anodes
In Fresh Water Fit Magnesium Anode

Some vessels will from time to time move between salt and fresh water, others are berthed within marinas and behind tidal barriers where the water is enclosed and likely to be brackish or even virtually fresh. Owners must be aware of the effects that this may have on their boats and fit the correct cathodic protection system to avoid corrosion.

Not all anodes are suitable for every environment, for example, the surface of a zinc or aluminum anode will if left in fresh water for some time become covered with an off white crust of oxide which effectively seals the anode and stops it working even when returned to salt water. Zinc Anodes suffer a similar problem even in brackish conditions whereas Aluminum will continue to operate effectively in river estuaries and other areas of brackish water indefinitely.
The consequences of this passivity of the anode are that the next most anodic item within the anode bonding system will start to sacrifice itself which could, of course, be very serious.

It is therefore very important to check Zinc and Aluminum anodes after any trips into fresh water and if necessary clean off or change the anodes. Should a vessel move into fresh water for more than two weeks Martyr recommends that an alternative anode system is used suitable for fresh water situations.

Magnesium Anodes, on the other hand, have a much higher driving voltage than zinc or aluminum making them highly suitable for use in fresh water, they will however become very active in salt water where they will probably only last a matter of months. 
Protected surfaces can build up a layer of off white calcareous deposit which will be difficult to remove.
Magnesium anodes are not designed for prolonged use in sea water and if you are taking your boat into a salt water location for more than seven days (Fourteen days in any one year) you should consider changing the anodes.

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Q. Do you offer Free Shipping?
A. We have Free ground shipping via UPS to the Lower 48 States on most orders of $199 or more.

Q. What do we mean by most orders?
A. Some items are exempt from this offer and are indicated on the product page. Exempt items are usually bulky or heavy items such as buoys. Over 98% of the items on qualify for the free shipping offer.

Q. Where do you ship from and What is the delivery time?
A. We ship from Halifax, Nova Scotia. Delivery time will be 3 - 7 business days. Northeast will be 3 - 4 days and Southwest and Pacific coast will be 7 business days. Most other areas are 5 business days.

Q. If my order does not qualify for free shipping what will it cost?
A. To see what your shipping charge (if any) will be you can add the item(s) and quantities to the shopping cart and you will see a shipping cost calculator.

Q. Will I be charged any sales taxes?
A. No. We are located in Canada and we are not required to charge US state sales taxes.

Q. Do I have to pay any customs charges or duties?
A. No. Orders under $800 do not receive any customs charges by US Customs. On Orders over $800 pays the charges - You will not be charged anything for duties or customs brokerage fees.

 Aluminum Anode Kit 
Aluminum Anode #: 31976 
Martyr Bravo II and III for Salt & Brackish Water
Our Price:US$45.20 
Add to Cart
 Magnesium Anode Kit 
Magnesium Anode #: 42078 
Martyr Bravo II and III for Fresh Water
Our Price:US$71.95 
Add to Cart
 Zinc Anode Kit 
Zinc Anode #: 31991 
Martyr Bravo II and III for Salt Water
Our Price:US$51.95 
Add to Cart
Money Back Guarantee
Guarantee You may return your purchase to us (with a return authorization number - use this form) within 30 days and we will refund the purchase price of the product. Items which are cut to order (rope, wire etc), software, chart cards and printed materials (paper charts, books) are not returnable.
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