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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.

Shop Sacrificial Anodes Zinc Anodes Anode Kits
Material Guide

Match anode material to your water type, then confirm dimensions, mounting style, and exact application.

Read Corrosion Protection Guide

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

Volvo Penta Mercury / MerCruiser Yanmar Crusader Indmar PCM

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.

All Sacrificial Anodes Zinc Anodes Aluminum Anodes Magnesium Anodes Anode Kits Shaft Anodes Installation Hardware

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.

H2O

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.

FIT

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.

KIT

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.

Shop All Anodes Corrosion Guide Volvo Penta Mercury / MerCruiser Yanmar Crusader Indmar PCM

Filters

Martyr 806190 Anode For Mercury Mercruiser

Martyr 806190 Anode For Mercury Mercruiser

$35.89 - $35.89
$35.89
$35.89 - $35.89
$35.89
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$35.89 - $35.89
$35.89
$35.89 - $35.89
$35.89
Martyr CM6884525101Z Yamaha Button Anode, Zinc

Martyr CM6884525101Z Yamaha Button Anode, Zinc

$8.19 - $8.19
$8.19
$8.19 - $8.19
$8.19
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$8.19 - $8.19
$8.19
$8.19 - $8.19
$8.19
Martyr 43994 Anode For Mercury Mercruiser

Martyr 43994 Anode For Mercury Mercruiser

$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
Martyr CM6884537102A Yamaha Skeg Anode, Aluminum

Martyr CM6884537102A Yamaha Skeg Anode, Aluminum

$31.19 - $31.19
$31.19
$31.19 - $31.19
$31.19
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$31.19 - $31.19
$31.19
$31.19 - $31.19
$31.19
Martyr CM6884537102Z Yamaha Skeg Anode, Zinc

Martyr CM6884537102Z Yamaha Skeg Anode, Zinc

$19.73 - $19.73
$19.73
$19.73 - $19.73
$19.73
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$19.73 - $19.73
$19.73
$19.73 - $19.73
$19.73
Martyr 43396 Zinc Anode For Mercury Mercruiser

Martyr 43396 Zinc Anode For Mercury Mercruiser

$38.73 - $38.73
$38.73
$38.73 - $38.73
$38.73
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$38.73 - $38.73
$38.73
$38.73 - $38.73
$38.73
Martyr CM6644537101A Yamaha Skeg Anode, Aluminum

Martyr CM6644537101A Yamaha Skeg Anode, Aluminum

$12.89 - $12.89
$12.89
$12.89 - $12.89
$12.89
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$12.89 - $12.89
$12.89
$12.89 - $12.89
$12.89
Martyr 31640 Anode For Mercury Mercruiser

Martyr 31640 Anode For Mercury Mercruiser

$19.39 - $19.39
$19.39
$19.39 - $19.39
$19.39
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$19.39 - $19.39
$19.39
$19.39 - $19.39
$19.39
Honda Outboard Anodes

Honda Outboard Anodes

$25.19 - $25.19
$25.19
$25.19 - $25.19
$25.19
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.Magnesium for fresh water, zinc for salt water.

$25.19 - $25.19
$25.19
$25.19 - $25.19
$25.19
Martyr 34127 Zinc Anode For Mercury Mercruiser

Martyr 34127 Zinc Anode For Mercury Mercruiser

$22.46 - $22.46
$22.46
$22.46 - $22.46
$22.46
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$22.46 - $22.46
$22.46
$22.46 - $22.46
$22.46
Honda Outboard Anodes

Honda Outboard Anodes

$19.10 - $19.10
$19.10
$19.10 - $19.10
$19.10
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.Magnesium for fresh water, zinc for salt water.

$19.10 - $19.10
$19.10
$19.10 - $19.10
$19.10
Martyr 34762 Zinc Anode For Mercury Mercruiser

Martyr 34762 Zinc Anode For Mercury Mercruiser

$12.38 - $12.38
$12.38
$12.38 - $12.38
$12.38
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$12.38 - $12.38
$12.38
$12.38 - $12.38
$12.38
Martyr 40005875 Anode For Volvo Penta

Martyr 40005875 Anode For Volvo Penta

$221.49 - $221.49
$221.49
$221.49 - $221.49
$221.49
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
$221.49 - $221.49
$221.49
$221.49 - $221.49
$221.49
Martyr 31640 Anode For Mercury Mercruiser

Martyr 31640 Anode For Mercury Mercruiser

$22.99 - $22.99
$22.99
$22.99 - $22.99
$22.99
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$22.99 - $22.99
$22.99
$22.99 - $22.99
$22.99
Martyr 55989 Anode For Mercury Mercruiser

Martyr 55989 Anode For Mercury Mercruiser

$6.89 - $6.89
$6.89
$6.89 - $6.89
$6.89
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$6.89 - $6.89
$6.89
$6.89 - $6.89
$6.89
Martyr 194-CM61N4525101A Yamaha Trim Tab Anode, Aluminum

Martyr 194-CM61N4525101A Yamaha Trim Tab Anode, Aluminum

$26.79 - $26.79
$26.79
$26.79 - $26.79
$26.79
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$26.79 - $26.79
$26.79
$26.79 - $26.79
$26.79
Martyr 55989 Anode For Mercury Mercruiser

Martyr 55989 Anode For Mercury Mercruiser

$19.39 - $19.39
$19.39
$19.39 - $19.39
$19.39
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$19.39 - $19.39
$19.39
$19.39 - $19.39
$19.39
Martyr 06411ZV5 Anode For Honda

Martyr 06411ZV5 Anode For Honda

$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.Magnesium for fresh water, zinc for salt water.

$24.99 - $24.99
$24.99
$24.99 - $24.99
$24.99
Martyr CM61A4537100A Yamaha Skeg Anode, Aluminum

Martyr CM61A4537100A Yamaha Skeg Anode, Aluminum

$34.79 - $34.79
$34.79
$34.79 - $34.79
$34.79
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$34.79 - $34.79
$34.79
$34.79 - $34.79
$34.79
Honda/Yamaha Anode

Honda/Yamaha Anode

$17.89 - $17.89
$17.89
$17.89 - $17.89
$17.89
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.Magnesium for fresh water, zinc for salt water.

$17.89 - $17.89
$17.89
$17.89 - $17.89
$17.89
Martyr 31640 Anode For Mercury Mercruiser

Martyr 31640 Anode For Mercury Mercruiser

$14.19 - $14.19
$14.19
$14.19 - $14.19
$14.19
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$14.19 - $14.19
$14.19
$14.19 - $14.19
$14.19
Martyr 06411ZW1 Anode For Honda

Martyr 06411ZW1 Anode For Honda

$42.79 - $42.79
$42.79
$42.79 - $42.79
$42.79
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.Magnesium for fresh water, zinc for salt water.

$42.79 - $42.79
$42.79
$42.79 - $42.79
$42.79
Martyr CM61A4537100Z Yamaha Skeg Anode, Zinc

Martyr CM61A4537100Z Yamaha Skeg Anode, Zinc

$50.99 - $50.99
$50.99
$50.99 - $50.99
$50.99
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$50.99 - $50.99
$50.99
$50.99 - $50.99
$50.99
Martyr CM551259630Z Suzuki Anode, Zinc

Martyr CM551259630Z Suzuki Anode, Zinc

$21.30 - $21.30
$21.30
$21.30 - $21.30
$21.30
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.Zinc for salt water.

$21.30 - $21.30
$21.30
$21.30 - $21.30
$21.30
Martyr CM5512587D00Z Suzuki Anode, Zinc

Martyr CM5512587D00Z Suzuki Anode, Zinc

$18.78 - $18.78
$18.78
$18.78 - $18.78
$18.78
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.Zinc for salt water.

$18.78 - $18.78
$18.78
$18.78 - $18.78
$18.78
Martyr 3883728 Magnesium Anode For Volvo Penta

Martyr 3883728 Magnesium Anode For Volvo Penta

$40.69 - $40.69
$40.69
$40.69 - $40.69
$40.69
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
$40.69 - $40.69
$40.69
$40.69 - $40.69
$40.69
Martyr 55989 Anode For Mercury Mercruiser

Martyr 55989 Anode For Mercury Mercruiser

$6.99 - $6.99
$6.99
$6.99 - $6.99
$6.99
Item locally warehoused

Always check propeller clearance after installing new trim tab anodes.

$6.99 - $6.99
$6.99
$6.99 - $6.99
$6.99
Martyr 3861634 Anode For Volvo Penta

Martyr 3861634 Anode For Volvo Penta

$24.14 - $24.14
$24.14
$24.14 - $24.14
$24.14
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
$24.14 - $24.14
$24.14
$24.14 - $24.14
$24.14

THUSTER ZINC

$161.53 - $161.53
$161.53
$161.53 - $161.53
$161.53
Only 4 left!

THUSTER ZINC

$161.53 - $161.53
$161.53
$161.53 - $161.53
$161.53

MerCruiser Bravo 2 & 3 Aluminum Anode Kit (B23KA)

$58.81 - $58.81
$58.81
$58.81 - $58.81
$58.81
Only 1 left!

Freshwater-Optimized Corrosion Protection for Bravo 2 & 3 SterndrivesProtect your MerCruiser Bravo 2 or Bravo 3 sterndrive from galvanic corros...

View full details
$58.81 - $58.81
$58.81
$58.81 - $58.81
$58.81

MerCruiser Bravo 2 & 3 Zinc Anode Kit (B23KZ)

$92.41 - $92.41
$92.41
$92.41 - $92.41
$92.41
Only 1 left!

Full Zinc Protection for MerCruiser Bravo 2 & 3 SterndrivesKeep your MerCruiser Bravo 2 or Bravo 3 sterndrive protected from galvanic corrosion...

View full details
$92.41 - $92.41
$92.41
$92.41 - $92.41
$92.41

Canada Metal Aluminum Anode Kit — Yamaha 150HP

$54.22 - $54.22
$54.22
$54.22 - $54.22
$54.22
11 in stock

Canada Metal Aluminum Anode Kit — Yamaha 150HP OutboardProtect your Yamaha 150HP outboard from galvanic corrosion with this complete aluminum anode...

View full details
$54.22 - $54.22
$54.22
$54.22 - $54.22
$54.22

Aluminum Anode Kit for MerCruiser Bravo Two & Three Sterndrives | BRAVO23KITA

$78.72 - $78.72
$78.72
$78.72 - $78.72
$78.72
12 in stock

Aluminum Anode Kit — MerCruiser Bravo Two & Three SterndrivesThis aluminum sacrificial anode kit provides complete galvanic corrosion protectio...

View full details
$78.72 - $78.72
$78.72
$78.72 - $78.72
$78.72
Bow Thruster Zinc Vetus BP 129

Bow Thruster Zinc Vetus BP 129

$37.54 - $37.54
$37.54
$37.54 - $37.54
$37.54
Item locally warehoused

Vetus bow thruster sacrificial zinc anode (zinc) for corrosion protection of the underwater thruster tailpiece/propeller shaft area. Key Features ...

View full details
$37.54 - $37.54
$37.54
$37.54 - $37.54
$37.54

Lewmar - Anode Kit for 185TT - 589350

$40.78 - $40.78
$40.78
$40.78 - $40.78
$40.78
Item locally warehoused

Lewmar Anode Kit for 185TT Thruster — 589350The Lewmar 589350 Anode Kit is the OEM replacement sacrificial anode set for the Lewmar 185TT bow or st...

View full details
$40.78 - $40.78
$40.78
$40.78 - $40.78
$40.78

Lewmar - Anode Kit for 250TT - 589550

$102.32 - $102.32
$102.32
$102.32 - $102.32
$102.32
Item locally warehoused

Lewmar Anode Kit for 250TT Thruster — 589550The Lewmar 589550 Anode Kit is the OEM replacement sacrificial anode set for the Lewmar 250TT bow or st...

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$102.32 - $102.32
$102.32
$102.32 - $102.32
$102.32
Anode-Kohler

Anode-Kohler

$19.09 - $19.09
$19.09
$19.09 - $19.09
$19.09
Item locally warehoused

Help protect your marine generator system from corrosion with this Sierra “Anode-Kohler” generator pencil anode (SKU 47-236400). Sacrificial anodes...

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$19.09 - $19.09
$19.09
$19.09 - $19.09
$19.09
Maryr Zinc Plate w/Steel Straps

Maryr Zinc Plate w/Steel Straps

$56.39 - $56.39
$56.39
$56.39 - $56.39
$56.39
Item locally warehoused

Overview Maryr Zinc Plate w/Steel Straps is a sacrificial anode plate designed to protect submerged metal surfaces in marine environments, featurin...

View full details
$56.39 - $56.39
$56.39
$56.39 - $56.39
$56.39
Martyr CMZ24BS Zinc Hull Anode (For Sea Ray) 1.25" x 6.25" x 14"

Martyr CMZ24BS Zinc Hull Anode (For Sea Ray) 1.25" x 6.25" x 14"

$312.39 - $312.39
$312.39
$312.39 - $312.39
$312.39
Item locally warehoused

Overview Martyr CMZ24BS Zinc Hull Anode (For Sea Ray) 1.25\" x 6.25\" x 14\" Key Features Zinc hull anode for sacrificial corrosion protection Dim...

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$312.39 - $312.39
$312.39
$312.39 - $312.39
$312.39

Quicksilver Power Trim Anode 818298Q1 | Mercury & OptiMax Outboards (Aluminum)

$43.56 - $43.56
$43.56
$43.56 - $43.56
$43.56
Item locally warehoused

Quicksilver Power Trim Anode 818298Q1 — Aluminum | Mercury & OptiMax OutboardsProtect your Mercury or OptiMax outboard’s power trim system from...

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$43.56 - $43.56
$43.56
$43.56 - $43.56
$43.56

Quicksilver Anodic Plate 76214Q5 | Mercury, Mariner & MerCruiser Drives (Aluminum)

$46.23 - $46.23
$46.23
$46.23 - $46.23
$46.23
Item locally warehoused

Quicksilver Anodic Plate 76214Q5 — Aluminum | Mercury, Mariner & MerCruiser DrivesShield your Mercury, Mariner, or MerCruiser drive from galvan...

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$46.23 - $46.23
$46.23
$46.23 - $46.23
$46.23
Maryr Zinc Plate w/Steel Straps

Maryr Zinc Plate w/Steel Straps

$92.39 - $92.39
$92.39
$92.39 - $92.39
$92.39
Item locally warehoused

Overview Maryr Zinc Plate w/Steel Straps is a sacrificial anode designed to protect marine metalwork from corrosion. This zinc plate features steel...

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$92.39 - $92.39
$92.39
$92.39 - $92.39
$92.39
Martyr CMZHC5 Zinc Hull Anode 4" x 8"

Martyr CMZHC5 Zinc Hull Anode 4" x 8"

$111.69 - $111.69
$111.69
$111.69 - $111.69
$111.69
Item locally warehoused

Overview Martyr CMZHC5 Zinc Hull Anode is a sacrificial zinc hull anode designed to protect marine vessel hulls from galvanic corrosion. This 4" x ...

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$111.69 - $111.69
$111.69
$111.69 - $111.69
$111.69
Maryr Zinc Plate w/Steel Straps

Maryr Zinc Plate w/Steel Straps

$212.59 - $212.59
$212.59
$212.59 - $212.59
$212.59
Item locally warehoused

Overview Maryr Zinc Plate w/Steel Straps is a sacrificial anode plate designed to protect metal components in marine environments. Note: Hole dimen...

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$212.59 - $212.59
$212.59
$212.59 - $212.59
$212.59
Martyr CMZHC2 Zinc Hull Anode 2.65" x 5.75"
Martyr CMZHC2AZ hull anode

Martyr CMZHC2 Zinc Hull Anode 2.65" x 5.75"

$61.99 - $61.99
$61.99
$61.99 - $61.99
$61.99
Item locally warehoused

Overview Martyr CMZHC2 Zinc Hull Anode 2.65" x 5.75" — zinc hull sacrificial anode for marine protection. Dimensions: 2.65" x 5.75"; hole spacing b...

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$61.99 - $61.99
$61.99
$61.99 - $61.99
$61.99
Maryr Zinc Plate w/Aluminum Straps

Maryr Zinc Plate w/Aluminum Straps

$50.99 - $50.99
$50.99
$50.99 - $50.99
$50.99
Item locally warehoused

Overview Maryr Zinc Plate w/Aluminum Straps — a sacrificial anode for marine corrosion protection. Zinc plates are for use in saltwater, while alum...

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$50.99 - $50.99
$50.99
$50.99 - $50.99
$50.99
Martyr CMZHC3 Zinc Hull Andoe 2.75" x 6.25"
Martyr CMZHC3AZ hull anode

Martyr CMZHC3 Zinc Hull Andoe 2.75" x 6.25"

$69.89 - $69.89
$69.89
$69.89 - $69.89
$69.89
Item locally warehoused

Overview Zinc hull sacrificial anode designed to protect marine hulls from galvanic corrosion. Key Features Zinc hull anode for corrosion protecti...

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$69.89 - $69.89
$69.89
$69.89 - $69.89
$69.89
Martyr Anode Kit For Yamaha 80-100 HP Outboards, Zinc

Martyr Anode Kit For Yamaha 80-100 HP Outboards, Zinc

$42.20 - $42.20
$42.20
$42.20 - $42.20
$42.20
Item locally warehoused

Overview Protect your Yamaha outboard with this sacrificial anode kit. Includes three anodes, mounting hardware, and install instructions for Yamah...

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$42.20 - $42.20
$42.20
$42.20 - $42.20
$42.20