Sacrificial Anodes
Marine Sacrificial Anodes & Corrosion Protection
Shop Marine Sacrificial Anodes
Find zinc anodes, aluminum anodes, magnesium anodes, anode kits, shaft anodes, trim tab anodes, engine anodes, outdrive anodes, propeller anodes, and installation hardware for corrosion protection in saltwater, brackish water, and freshwater applications.
Material Guide
Read Corrosion Protection Guide
Match anode material to your water type, then confirm dimensions, mounting style, and exact application.
Always confirm anode material, dimensions, fastener style, and application for your vessel, drive, engine, shaft, or underwater hardware.
Volvo Penta Mercury / MerCruiser Yanmar Crusader Indmar PCM Shaft Anodes Trim Tab Anodes Outdrive Anodes Propeller Anodes Engine Anodes
Top OEM Anode Searches
Highlighted Anode Categories
Zinc AnodesCommon saltwater protection
Aluminum AnodesSaltwater and brackish use
Magnesium AnodesFreshwater applications
Anode KitsMatched service sets
Shaft AnodesProp shaft protection
Trim Tab AnodesTabs and planes
Engine AnodesCooling-system protection
Outdrive AnodesSterndrive protection
Propeller AnodesProp and hub protection
Browse Fast
Shop by Anode Category
Choose the anode material, kit, or application that matches your water type and the metal component you need to protect.
Why It Matters
Anodes Help Protect Underwater Metals from Corrosion
Sacrificial anodes are designed to corrode before more valuable underwater metals such as shafts, propellers, trim tabs, outdrives, thru-hulls, and engine cooling components.
Using the correct anode material and replacing anodes before they are fully consumed helps reduce galvanic corrosion and supports longer component life.
Match Water Type
Zinc is commonly used for saltwater, aluminum can work in saltwater and brackish water, and magnesium is typically used for freshwater applications.
Confirm Shape and Size
Check diameter, length, hole spacing, thread, mounting hardware, contact surface, and whether the anode fits a shaft, tab, drive, engine, or propeller.
Use Kits When Possible
Anode kits help replace multiple matched pieces on a drive or engine at the same time, reducing missed parts during seasonal service.
Parts Desk Guidance
Single Anode or Complete Kit?
If one anode is damaged, missing, or consumed faster than the rest, a single replacement may be enough. For seasonal service or unknown history, a complete anode kit can be the better choice because it refreshes all key protection points together.
Choose zinc anodes For many saltwater applications where zinc is specified by the manufacturer or existing setup.
Choose aluminum anodes For many saltwater and brackish applications, especially where aluminum anodes are specified for drives or kits.
Choose magnesium anodes For freshwater applications where magnesium is required and saltwater exposure is not expected.
Choose anode kits For matched replacement sets on outdrives, engines, trim systems, thrusters, or other grouped applications.
Common Questions
Sacrificial Anode Buying Help
How do I choose the correct anode material?
Start with the water type and manufacturer recommendation. Zinc is often used in saltwater, aluminum is common for saltwater or brackish use, and magnesium is typically for freshwater.
When should sacrificial anodes be replaced?
Replace anodes when they are heavily wasted, loose, damaged, missing, or near half consumed. Inspect them regularly and during seasonal service.
Can I mix zinc, aluminum, and magnesium anodes?
Avoid mixing anode materials on the same bonded system unless the manufacturer specifically allows it. Mixed materials can reduce protection or cause uneven performance.
Why do anode dimensions matter?
Anodes need solid metal-to-metal contact and the correct mounting shape. Wrong dimensions, paint, loose fasteners, or poor contact can prevent proper protection.
Ready to Find Your Part?
Search Zinc, Aluminum, Magnesium Anodes & Kits
Use the collection page or search by water type, brand, application, kit, drive model, shaft size, or existing part number.
Martyr 892227 Aluminum Anode For Mercury Mercruiser Fits Verado 6
Original price
$18.36
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Original price
$18.36
Original price
$18.36
$18.36
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$18.36
Current price
$18.36
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$18.36
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Original price
$18.36
Original price
$18.36
$18.36
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$18.36
Current price
$18.36
Martyr MP83R Max Prop Zinc Anode (Includes Insert)
Original price
$40.99
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Original price
$40.99
Original price
$40.99
$40.99
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$40.99
Current price
$40.99
Item locally warehoused
Propeller Nut Anode For Max Prop - Zinc
Original price
$40.99
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Original price
$40.99
Original price
$40.99
$40.99
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$40.99
Current price
$40.99
Martyr 880653 Aluminum Anode For Mercury Mercruiser Fits Verado 6
Original price
$35.99
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Original price
$35.99
Original price
$35.99
$35.99
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$35.99
Current price
$35.99
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$35.99
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Original price
$35.99
Original price
$35.99
$35.99
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$35.99
Current price
$35.99
Martyr 806189 Anode For Mercury Mercruiser
Original price
$20.79
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Original price
$20.79
Original price
$20.79
$20.79
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$20.79
Current price
$20.79
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$20.79
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Original price
$20.79
Original price
$20.79
$20.79
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$20.79
Current price
$20.79
Martyr MP63R Max Zinc Prop Anode (Includes Insert)
Original price
$14.99
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Original price
$14.99
Original price
$14.99
$14.99
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$14.99
Current price
$14.99
Item locally warehoused
Propeller Nut Anode For Max Prop - Zinc
Original price
$14.99
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Original price
$14.99
Original price
$14.99
$14.99
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$14.99
Current price
$14.99
Martyr 873395 Magnesium Anode For Volvo Penta
Original price
$28.29
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Original price
$28.29
Original price
$28.29
$28.29
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$28.29
Current price
$28.29
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.Aluminum for salt and brackish water, magnesium for fresh water, zinc for sal...
View full details
Original price
$28.29
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Original price
$28.29
Original price
$28.29
$28.29
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$28.29
Current price
$28.29
Martyr 76214 Anode For Mercury Mercruiser
Original price
$14.59
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Original price
$14.59
Original price
$14.59
$14.59
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$14.59
Current price
$14.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$14.59
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Original price
$14.59
Original price
$14.59
$14.59
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$14.59
Current price
$14.59
Martyr 76214 Anode For Mercury Mercruiser
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$13.29
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Original price
$13.29
Original price
$13.29
$13.29
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$13.29
Current price
$13.29
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$13.29
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Original price
$13.29
Original price
$13.29
$13.29
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$13.29
Current price
$13.29
Martyr 806188 Anode For Mercury Mercruiser
Original price
$31.89
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Original price
$31.89
Original price
$31.89
$31.89
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$31.89
Current price
$31.89
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$31.89
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Original price
$31.89
Original price
$31.89
$31.89
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$31.89
Current price
$31.89
Martyr 806189 Anode For Mercury Mercruiser
Original price
$18.39
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Original price
$18.39
Original price
$18.39
$18.39
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$18.39
Current price
$18.39
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$18.39
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Original price
$18.39
Original price
$18.39
$18.39
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$18.39
Current price
$18.39
Martyr 984325 Zinc Anode For Mercury Mercruiser
Original price
$30.59
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Original price
$30.59
Original price
$30.59
$30.59
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$30.59
Current price
$30.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$30.59
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Original price
$30.59
Original price
$30.59
$30.59
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$30.59
Current price
$30.59
Martyr 806188 Anode For Mercury Mercruiser
Original price
$30.86
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Original price
$30.86
Original price
$30.86
$30.86
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$30.86
Current price
$30.86
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$30.86
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Original price
$30.86
Original price
$30.86
$30.86
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$30.86
Current price
$30.86
Martyr 762145 Anode For Mercury Mercruiser
Original price
$16.49
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Original price
$16.49
Original price
$16.49
$16.49
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$16.49
Current price
$16.49
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$16.49
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Original price
$16.49
Original price
$16.49
$16.49
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$16.49
Current price
$16.49
Martyr 806105 Anode For Mercury Mercruiser
Original price
$14.69
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Original price
$14.69
Original price
$14.69
$14.69
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$14.69
Current price
$14.69
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$14.69
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Original price
$14.69
Original price
$14.69
$14.69
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$14.69
Current price
$14.69
Martyr 806105 Anode For Mercury Mercruiser
Original price
$33.29
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Original price
$33.29
Original price
$33.29
$33.29
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$33.29
Current price
$33.29
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$33.29
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Original price
$33.29
Original price
$33.29
$33.29
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$33.29
Current price
$33.29
Martyr 865182C Mercruiser Enhanced Protection Prop Nut Zinc Anode Fits Prop Shafts For Bravo III 2004 to Present
Original price
$11.39
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Original price
$11.39
Original price
$11.39
$11.39
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$11.39
Current price
$11.39
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water
Original price
$11.39
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Original price
$11.39
Original price
$11.39
$11.39
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$11.39
Current price
$11.39
Martyr 762144 Anode For Mercury Mercruiser
Original price
$28.39
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Original price
$28.39
Original price
$28.39
$28.39
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$28.39
Current price
$28.39
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$28.39
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Original price
$28.39
Original price
$28.39
$28.39
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$28.39
Current price
$28.39
Martyr 806105 Anode For Mercury Mercruiser
Original price
$13.85
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Original price
$13.85
Original price
$13.85
$13.85
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$13.85
Current price
$13.85
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$13.85
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Original price
$13.85
Original price
$13.85
$13.85
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$13.85
Current price
$13.85
Martyr 865182C Mercruiser Enhanced Protection Prop Nut Aluminum Anode Fits Prop Shafts For Bravo III 2004 to Present
Original price
$25.69
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Original price
$25.69
Original price
$25.69
$25.69
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$25.69
Current price
$25.69
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.Aluminum for salt and brackish waterMagnesium for fresh waterZinc for salt water
Original price
$25.69
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Original price
$25.69
Original price
$25.69
$25.69
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$25.69
Current price
$25.69
Martyr 821631 Anode For Mercury Mercruiser
Original price
$51.54
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Original price
$51.54
Original price
$51.54
$51.54
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$51.54
Current price
$51.54
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$51.54
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Original price
$51.54
Original price
$51.54
$51.54
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$51.54
Current price
$51.54
Martyr 762145 Anode For Mercury Mercruiser
Original price
$15.29
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Original price
$15.29
Original price
$15.29
$15.29
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$15.29
Current price
$15.29
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$15.29
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Original price
$15.29
Original price
$15.29
$15.29
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$15.29
Current price
$15.29
Martyr 826134 Anode For Mercury Mercruiser
Original price
$28.59
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Original price
$28.59
Original price
$28.59
$28.59
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$28.59
Current price
$28.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$28.59
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Original price
$28.59
Original price
$28.59
$28.59
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$28.59
Current price
$28.59
Martyr 826134 Anode For Mercury Mercruiser
Original price
$13.59
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Original price
$13.59
Original price
$13.59
$13.59
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$13.59
Current price
$13.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$13.59
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Original price
$13.59
Original price
$13.59
$13.59
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$13.59
Current price
$13.59
Martyr 762145 Anode For Mercury Mercruiser
Original price
$31.19
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Original price
$31.19
Original price
$31.19
$31.19
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$31.19
Current price
$31.19
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$31.19
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Original price
$31.19
Original price
$31.19
$31.19
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$31.19
Current price
$31.19
Martyr 826134 Anode For Mercury Mercruiser
Original price
$9.29
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Original price
$9.29
Original price
$9.29
$9.29
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$9.29
Current price
$9.29
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$9.29
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Original price
$9.29
Original price
$9.29
$9.29
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$9.29
Current price
$9.29
Martyr 821631 Anode For Mercury Mercruiser
Original price
$40.29
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Original price
$40.29
Original price
$40.29
$40.29
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$40.29
Current price
$40.29
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$40.29
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Original price
$40.29
Original price
$40.29
$40.29
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$40.29
Current price
$40.29
Martyr 762144 Anode For Mercruiser
Original price
$15.49
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Original price
$15.49
Original price
$15.49
$15.49
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$15.49
Current price
$15.49
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$15.49
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Original price
$15.49
Original price
$15.49
$15.49
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$15.49
Current price
$15.49
Martyr CM6K14537102Z Yamaha Anode, Zinc
Original price
$35.37
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Original price
$35.37
Original price
$35.37
$35.37
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$35.37
Current price
$35.37
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$35.37
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Original price
$35.37
Original price
$35.37
$35.37
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$35.37
Current price
$35.37
Martyr CM6J94537101A Yamaha Skeg Anode, Aluminum
Original price
$31.59
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Original price
$31.59
Original price
$31.59
$31.59
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$31.59
Current price
$31.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$31.59
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Original price
$31.59
Original price
$31.59
$31.59
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$31.59
Current price
$31.59
Martyr 821630C2 Anode For Mercury Mercruiser
Original price
$30.49
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Original price
$30.49
Original price
$30.49
$30.49
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$30.49
Current price
$30.49
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$30.49
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Original price
$30.49
Original price
$30.49
$30.49
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$30.49
Current price
$30.49
Martyr CM6J94537101Z Yamaha Skeg Anode, Zinc
Original price
$34.69
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Original price
$34.69
Original price
$34.69
$34.69
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$34.69
Current price
$34.69
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$34.69
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Original price
$34.69
Original price
$34.69
$34.69
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$34.69
Current price
$34.69
Martyr 822157C2 Zinc Anode For Mercury Mercruiser
Original price
$18.69
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Original price
$18.69
Original price
$18.69
$18.69
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$18.69
Current price
$18.69
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$18.69
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Original price
$18.69
Original price
$18.69
$18.69
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$18.69
Current price
$18.69
Martyr 821629C Anode For Mercury Mercruiser
Original price
$31.69
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Original price
$31.69
Original price
$31.69
$31.69
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$31.69
Current price
$31.69
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$31.69
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Original price
$31.69
Original price
$31.69
$31.69
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$31.69
Current price
$31.69
Martyr CM6K14537100Z Yamaha Skeg Anode, Zinc
Original price
$51.12
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Original price
$51.12
Original price
$51.12
$51.12
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$51.12
Current price
$51.12
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$51.12
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Original price
$51.12
Original price
$51.12
$51.12
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$51.12
Current price
$51.12
Martyr 818298 Anode For Mercury Mercruiser
Original price
$46.49
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Original price
$46.49
Original price
$46.49
$46.49
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$46.49
Current price
$46.49
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$46.49
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Original price
$46.49
Original price
$46.49
$46.49
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$46.49
Current price
$46.49
Martyr 821631 Anode For Mercury Mercruiser
Original price
$25.99
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Original price
$25.99
Original price
$25.99
$25.99
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$25.99
Current price
$25.99
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$25.99
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Original price
$25.99
Original price
$25.99
$25.99
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$25.99
Current price
$25.99
Martyr CM6E54537101A Yamaha Skeg Anode, Aluminum
Original price
$21.99
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Original price
$21.99
Original price
$21.99
$21.99
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$21.99
Current price
$21.99
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$21.99
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Original price
$21.99
Original price
$21.99
$21.99
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$21.99
Current price
$21.99
Martyr 3841427 Magnesium Anode For Volvo Penta
Original price
$39.49
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Original price
$39.49
Original price
$39.49
$39.49
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$39.49
Current price
$39.49
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.Aluminum for salt and brackish water, magnesium for fresh water, zinc for sal...
View full details
Original price
$39.49
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Original price
$39.49
Original price
$39.49
$39.49
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$39.49
Current price
$39.49
Martyr 821629C Anode For Mercury Mercruiser
Original price
$31.79
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Original price
$31.79
Original price
$31.79
$31.79
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$31.79
Current price
$31.79
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$31.79
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Original price
$31.79
Original price
$31.79
$31.79
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$31.79
Current price
$31.79
Martyr 821630C2 Anode For Mercury Mercruiser
Original price
$43.59
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Original price
$43.59
Original price
$43.59
$43.59
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$43.59
Current price
$43.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$43.59
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Original price
$43.59
Original price
$43.59
$43.59
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$43.59
Current price
$43.59
Martyr CM69L4537100Z Yamaha Trim Tab Anode, Zinc
Original price
$49.59
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Original price
$49.59
Original price
$49.59
$49.59
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$49.59
Current price
$49.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$49.59
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Original price
$49.59
Original price
$49.59
$49.59
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$49.59
Current price
$49.59
Martyr 821630C2 Anode For Mercury Mercruiser
Original price
$41.49
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Original price
$41.49
Original price
$41.49
$41.49
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$41.49
Current price
$41.49
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$41.49
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Original price
$41.49
Original price
$41.49
$41.49
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$41.49
Current price
$41.49
Martyr 3593881 Anode For Volvo Penta
Original price
$43.98
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Original price
$43.98
Original price
$43.98
$43.98
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$43.98
Current price
$43.98
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.Aluminum for salt and brackish water, magnesium for fresh water, zinc for sal...
View full details
Original price
$43.98
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Original price
$43.98
Original price
$43.98
$43.98
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$43.98
Current price
$43.98
Martyr 43994 Anode For Mercury Mercruiser
Original price
$35.59
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Original price
$35.59
Original price
$35.59
$35.59
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$35.59
Current price
$35.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$35.59
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Original price
$35.59
Original price
$35.59
$35.59
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$35.59
Current price
$35.59
Martyr 818298 Anode For Mercury Mercruiser
Original price
$16.49
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Original price
$16.49
Original price
$16.49
$16.49
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$16.49
Current price
$16.49
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$16.49
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Original price
$16.49
Original price
$16.49
$16.49
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$16.49
Current price
$16.49
Martyr 821629C Anode For Mercury Mercruiser
Original price
$27.59
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Original price
$27.59
Original price
$27.59
$27.59
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$27.59
Current price
$27.59
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$27.59
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Original price
$27.59
Original price
$27.59
$27.59
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$27.59
Current price
$27.59
Martyr 46399 Zinc Anode For Mercury Mercruiser
Original price
$31.89
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Original price
$31.89
Original price
$31.89
$31.89
-
$31.89
Current price
$31.89
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.
Original price
$31.89
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Original price
$31.89
Original price
$31.89
$31.89
-
$31.89
Current price
$31.89
Martyr 3588745 Anode For Volvo Penta
Original price
$34.99
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Original price
$34.99
Original price
$34.99
$34.99
-
$34.99
Current price
$34.99
Item locally warehoused
Always check propeller clearance after installing new trim tab anodes.Aluminum for salt and brackish water, magnesium for fresh water, zinc for sal...
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Original price
$34.99
-
Original price
$34.99
Original price
$34.99
$34.99
-
$34.99
Current price
$34.99