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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

Volvo Penta OEM Zinc Anode Kit IPS Pod Drive 21174476

$551.00 - $551.00
$551.00
$551.00 - $551.00
$551.00
Only 1 left!

The Volvo Penta 21174476 is a genuine OEM zinc anode kit for select IPS pod drive applications. Current Volvo Penta references identify it as part ...

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$551.00 - $551.00
$551.00
$551.00 - $551.00
$551.00

Volvo Penta Transom Shield Anode 3586461 | SX DP-S DP-SM Sterndrive

$74.00 - $74.00
$74.00
$74.00 - $74.00
$74.00
Only 1 left!

Part Details Part Number: 3586461 Brand: Volvo Penta Type: Sacrificial anode — transom shield location Material: Aluminum (recommended for sal...

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$74.00 - $74.00
$74.00
$74.00 - $74.00
$74.00

Volvo Penta SX Sterndrive Zinc Anode Kit – 3588770

$111.00 - $111.00
$111.00
$111.00
$111.00 - $111.00
$111.00
6 in stock

Volvo Penta SX Sterndrive Zinc Anode Kit – Part Number 3588770 Brand: Volvo Penta (Genuine OEM) Part Number: 3588770 Official Product Type: Zinc An...

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$111.00 - $111.00
$111.00
$111.00
$111.00 - $111.00
$111.00

Martyr Zinc Anode Lewmar 140TT Thruster 140mm CMT-589150Z

$14.45 - $14.45
$14.45
$14.45 - $14.45
$14.45
Only 5 left!

The Martyr CMT-589150Z is a zinc bow thruster anode for Lewmar 140TT thruster applications. It is designed to help protect the thruster and nearby ...

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$14.45 - $14.45
$14.45
$14.45 - $14.45
$14.45

Zinc Streamlined Shaft Anode 60mm X60MM

$95.63 - $95.63
$95.63
$95.63 - $95.63
$95.63
Only 1 left!

This zinc streamlined shaft anode is designed for 60 mm propeller shafts and is used to help protect the shaft and running gear from galvanic corro...

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$95.63 - $95.63
$95.63
$95.63 - $95.63
$95.63

Max Prop Universal Zinc Anode 70mm MP70-U

$7.82 - $7.82
$7.82
$7.82 - $7.82
$7.82
Only 1 left!

Max Prop Universal Sacrificial Zinc Anode – Part No. MP70-U Protect your Max Prop from galvanic corrosion with the MP70-U Universal Sacrificial Zin...

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$7.82 - $7.82
$7.82
$7.82 - $7.82
$7.82

Yamaha OEM Zinc Bracket Anode F15-F70 VF150 VF175 65W-45251-00-00

$22.80 - $22.80
$22.80
$22.80 - $22.80
$22.80
Only 1 left!

The Yamaha 65W-45251-00-00 is a genuine OEM bracket anode for select Yamaha outboard applications. It is designed to help protect the outboard brac...

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$22.80 - $22.80
$22.80
$22.80 - $22.80
$22.80

Yamaha OEM Zinc Gearcase Cube Anode F30 F40 F50 F60 67C-45251-00-00

$26.70 - $26.70
$26.70
$26.70 - $26.70
$26.70
Only 1 left!

The Yamaha 67C-45251-00-00 is a genuine OEM zinc trim tab bracket anode for select Yamaha outboard applications. It is commonly described as a cube...

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$26.70 - $26.70
$26.70
$26.70 - $26.70
$26.70

Yanmar OEM Zinc Anode Screw 27210-200300

$4.88 - $4.88
$4.88
$4.88 - $4.88
$4.88
Only 1 left!

The Yanmar 27210-200300 is a genuine OEM zinc anode screw used as an internal engine corrosion-protection part on select Yanmar marine diesel appli...

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$4.88 - $4.88
$4.88
$4.88 - $4.88
$4.88

Martyr Zinc Rudder Anode Set 5 Inch CMR04S

$54.49 - $54.49
$54.49
$54.49 - $54.49
$54.49
6 in stock

The Martyr CMR04S is a zinc rudder anode set designed to help protect rudders and trim tabs from galvanic corrosion in saltwater use. Current produ...

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$54.49 - $54.49
$54.49
$54.49 - $54.49
$54.49

Aluminum Anode Kit MerCruiser Bravo One B1KA

$118.64 - $118.64
$118.64
$118.64 - $118.64
$118.64
Only 2 left!

The B1KA is an aluminum anode kit for MerCruiser Bravo One sterndrives. Current fitment references consistently describe this kit for 1988 and newe...

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$118.64 - $118.64
$118.64
$118.64 - $118.64
$118.64

Mercury OEM Aluminum Power Trim Anode Verado L6 V8 880653

$108.77 - $108.77
$108.77
$108.77 - $108.77
$108.77
Only 2 left!

Quicksilver 880653 Aluminum Power Trim Assembly Anode for Mercury Verado & SeaPro Outboards Protect critical trim components from corrosion wit...

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$108.77 - $108.77
$108.77
$108.77 - $108.77
$108.77

Yamaha OEM Zinc Internal Anode 63P-11325-11-00

$18.60 - $18.60
$18.60
$18.60 - $18.60
$18.60
Only 2 left!

The Yamaha 63P-11325-11-00 is a genuine OEM internal anode used on select Yamaha outboard applications. Current Yamaha parts references identify it...

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$18.60 - $18.60
$18.60
$18.60 - $18.60
$18.60

OMC OEM Anode and Screw Kit Johnson Evinrude V6 5010190

$77.19 - $77.19
$77.19
$77.19 - $77.19
$77.19
Only 2 left!

The OMC 5010190 is a genuine OEM anode and screw kit for select Johnson / Evinrude outboard applications. Current OEM parts listings identify 50101...

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$77.19 - $77.19
$77.19
$77.19 - $77.19
$77.19

Martyr Zinc Handlebar Anode Yamaha Outboard CM6G54525101Z

$69.82 - $69.82
$69.82
$69.82 - $69.82
$69.82
Only 2 left!

The Martyr CM6G54525101Z is a zinc handlebar-style transom bracket anode for select Yamaha outboard applications. It is commonly cross-referenced t...

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$69.82 - $69.82
$69.82
$69.82 - $69.82
$69.82

Volvo Penta OEM Aluminum Anode Kit IPS-A IPS3 23172846

$538.00 - $538.00
$538.00
$538.00 - $538.00
$538.00
Only 2 left!

The Volvo Penta 23172846 is a genuine OEM aluminum anode kit for select IPS-A marine propulsion applications. Current parts references identify it ...

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$538.00 - $538.00
$538.00
$538.00 - $538.00
$538.00
Genuine Volvo Penta 3807400 zinc steering tie bar anode for select DPH and DPR sterndrives. Helps protect steering hardware from galvanic corrosion in marine environments.

Volvo Penta OEM Zinc Tie Bar Steering Anode DPH DPR 3807400

$53.60 - $53.60
$53.60
$53.60 - $53.60
$53.60
Only 1 left!

Volvo Penta OEM Zinc Tie Bar Steering Anode DPH DPR 3807400 Product DescriptionThe Volvo Penta 3807400 is a genuine OEM zinc tie bar steering anode...

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$53.60 - $53.60
$53.60
$53.60 - $53.60
$53.60

Volvo Penta OEM Aluminum Cavitation Plate Anode DPI DPH DPR 23520859

$161.00 - $161.00
$161.00
$161.00
$161.00 - $161.00
$161.00
8 in stock

The Volvo Penta 23520859 is a genuine OEM aluminum anode for select Volvo Penta sterndrive applications. Volvo Penta’s official parts shop identifi...

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$161.00 - $161.00
$161.00
$161.00
$161.00 - $161.00
$161.00

Volvo Penta OEM Aluminum Anode Kit 290 DP SP Series 23986753

$36.80 - $36.80
$36.80
$36.80 - $36.80
$36.80
Only 4 left!

The Volvo Penta 23986753 is a genuine OEM aluminum anode kit for select Volvo Penta sterndrive applications. Volvo Penta lists 23986753 as an anode...

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$36.80 - $36.80
$36.80
$36.80 - $36.80
$36.80
Genuine OEM Volvo Penta 3861634 XDP ring anode Volvo Penta 3861634 sterndrive ring anode ring anode for Volvo Penta XDP sterndrives.

Volvo Penta Sacrificial Zinc Anode – Part 3861634

$37.10 - $37.10
$37.10
$37.10 - $37.10
$37.10
Only 2 left!

Volvo Penta Sacrificial Zinc Anode – Part No. 3861634 Product DescriptionProtect your sterndrive from galvanic corrosion with the genuine Volvo Pen...

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$37.10 - $37.10
$37.10
$37.10 - $37.10
$37.10

Volvo Penta Sacrificial Zinc Anode – Part 3863193

$61.80 - $61.80
$61.80
$61.80 - $61.80
$61.80
Only 1 left!

Volvo Penta Sacrificial Zinc Anode – Part No. 3863193 Product DescriptionKeep your sterndrive protected with the genuine Volvo Penta 3863193 alumin...

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$61.80 - $61.80
$61.80
$61.80 - $61.80
$61.80

Martyr Aluminum Prop Anode Side-Power 31180 CMT-SGSP31180A

$8.00 - $8.00
$8.00
$8.00 - $8.00
$8.00
12 in stock

The Martyr CMT-SGSP31180A is an aluminum replacement anode for Side-Power / Sleipner thruster applications using the 31180-style prop anode. It is ...

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$8.00 - $8.00
$8.00
$8.00 - $8.00
$8.00

Yamaha Outboard Anode – 67F-11325-00-00 – Sacrificial Zinc Anode

$29.08 - $29.08
$29.08
$29.08 - $29.08
$29.08
Only 1 left!

Yamaha Outboard Sacrificial Zinc Anode – Part 67F-11325-00-00 Key features and specs Yamaha part number: 67F-11325-00-00. Product type: internal...

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$29.08 - $29.08
$29.08
$29.08 - $29.08
$29.08

Zinc Hull Plate Anode 4-5/8" x 2-1/2" CMT-ZHC2AZ

$61.32 - $61.32
$61.32
$61.32 - $61.32
$61.32
19 in stock

The CMT-ZHC2AZ (Martyr CMZHC2AZ) is a compact bolt-on zinc hull plate anode designed to protect underwater hull surfaces and bonded metal component...

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$61.32 - $61.32
$61.32
$61.32 - $61.32
$61.32

Zinc Hull Plate Anode 6-1/4" x 2-3/4" CMT-ZHC3AZ

$58.95 - $58.95
$58.95
$58.95 - $58.95
$58.95
18 in stock

The CMT-ZHC3AZ (Martyr CMZHC3AZ) is a bolt-on zinc hull plate anode designed to protect underwater hull surfaces from galvanic corrosion. Installed...

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$58.95 - $58.95
$58.95
$58.95 - $58.95
$58.95

Yamaha Zinc Crankcase Anode 68V-11325-02-00

$40.39 - $40.39
$40.39
$40.39 - $40.39
$40.39
Only 1 left!

The Yamaha 68V-11325-02-00 is a genuine OEM zinc crankcase anode designed to protect internal engine components from galvanic corrosion. Installed ...

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$40.39 - $40.39
$40.39
$40.39 - $40.39
$40.39

Yamaha Magnesium Anode 6AW-1132P-00-00

$49.26 - $49.26
$49.26
$49.26 - $49.26
$49.26
Only 2 left!

The Yamaha 6AW-1132P-00-00 is a genuine OEM internal engine anode (often referred to as “Anode 5”) designed to protect cylinder head and crankcase ...

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$49.26 - $49.26
$49.26
$49.26 - $49.26
$49.26

Yamaha Zinc Crankcase Anode 6G8-11325-00-00

$5.49 - $5.49
$5.49
$5.49 - $5.49
$5.49
Only 2 left!

The Yamaha 6G8-11325-00-00 is a genuine OEM zinc crankcase anode designed to protect internal engine components from galvanic corrosion. Instal...

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$5.49 - $5.49
$5.49
$5.49 - $5.49
$5.49

Bennett Trim Tab Aluminum Anode Kit A 194-CMBNT1AA

$35.49 - $35.49
$35.49
$35.49 - $35.49
$35.49
Only 1 left!

The 194-CMBNT1AA (commonly referenced as CMBNT1AKITA kit A) is an aluminum trim tab anode kit designed specifically for Bennett trim tab systems. T...

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$35.49 - $35.49
$35.49
$35.49 - $35.49
$35.49

Yamaha Zinc Crankcase Anode 63P-11325-01-00

$18.60 - $18.60
$18.60
$18.60 - $18.60
$18.60
Only 3 left!

The Yamaha 63P-11325-01-00 is a genuine OEM zinc anode designed to protect Yamaha outboard engines from galvanic corrosion. Commonly used as a cran...

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$18.60 - $18.60
$18.60
$18.60 - $18.60
$18.60

Volvo Penta Aluminum Anode Kit 23164609

$83.00 - $83.00
$83.00
$83.00
$83.00 - $83.00
$83.00
10 in stock

The Volvo Penta 23164609 is a genuine OEM aluminum anode kit engineered to protect Volvo Penta drive systems and underwater components from galvani...

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$83.00 - $83.00
$83.00
$83.00
$83.00 - $83.00
$83.00

Volvo Penta Aluminum Anode Kit 23615636

$102.00 - $102.00
$102.00
$102.00 - $102.00
$102.00
Only 3 left!

The Volvo Penta 23615636 is a genuine OEM aluminum anode kit designed for 130 and 150 series saildrives, providing corrosion protection for the low...

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$102.00 - $102.00
$102.00
$102.00 - $102.00
$102.00

Volvo Penta Zinc Anode Kit 3588748

$107.00 - $107.00
$107.00
$107.00 - $107.00
$107.00
Only 3 left!

The Volvo Penta 3588748 is a zinc anode kit designed for DPH and DPR duo-prop sterndrives, providing essential corrosion protection for the drive u...

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$107.00 - $107.00
$107.00
$107.00 - $107.00
$107.00

Volvo Penta 3593981 Zinc Anode Kit – IPS Drive

$159.00 - $159.00
$159.00
$159.00 - $159.00
$159.00
Only 2 left!

Volvo Penta 3593981 – Zinc Anode Kit, IPS Drive Part Number: 3593981 Brand: Volvo Penta Official Part Type: Zinc Anode Kit – IPS Drive System: IPS...

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$159.00 - $159.00
$159.00
$159.00 - $159.00
$159.00

Volvo Penta Zinc Anode 838929

$20.20 - $20.20
$20.20
$20.20 - $20.20
$20.20
Only 3 left!

The Volvo Penta 838929 is a zinc pencil anode designed to protect internal engine cooling system components from galvanic corrosion. Installed insi...

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$20.20 - $20.20
$20.20
$20.20 - $20.20
$20.20

ZN Hanging Anode 11' Cable

$153.07 - $153.07
$153.07
$153.07 - $153.07
$153.07
Only 3 left!

This fish-shaped zinc anode is a portable overboard sacrificial anode designed to provide temporary corrosion protection for boats at dock or ancho...

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$153.07 - $153.07
$153.07
$153.07 - $153.07
$153.07

MerCruiser Bravo 3 Zinc Prop Nut Anode CMT-865182CZ

$13.08 - $13.08
$13.08
$13.08 - $13.08
$13.08
7 in stock

The CMT-865182CZ is a zinc prop nut anode designed specifically for MerCruiser Bravo 3 sterndrives (2004 and newer), providing dual-function propel...

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$13.08 - $13.08
$13.08
$13.08 - $13.08
$13.08

Zinc Engine Anode E0 5/16" UNC CMT-EZ0

$4.44 - $4.44
$4.44
$4.44 - $4.44
$4.44
34 in stock

The CMT-EZ0 is a marine-grade zinc pencil engine anode, E0 style with 5/16" UNC thread, providing sacrificial cathodic protection for internal engi...

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$4.44 - $4.44
$4.44
$4.44 - $4.44
$4.44

Zinc Shaft Anode 4" CMT-X17

$162.56 - $162.56
$162.56
$162.56 - $162.56
$162.56
Only 3 left!

The CMT-X17 is a marine-grade zinc clamp-on shaft anode sized for 4" diameter propeller shafts, providing heavy-duty sacrificial cathodic protectio...

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$162.56 - $162.56
$162.56
$162.56 - $162.56
$162.56

Sierra Zinc Trim Tab Anode SIE-23-6401 Mercury Mariner

$35.30 - $35.30
$35.30
$35.30 - $35.30
$35.30
Only 3 left!

The Sierra 23-6401 (SIE-23-6401) is a marine-grade zinc trim tab anode designed as a direct aftermarket replacement for Mercury and Mariner outboar...

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$35.30 - $35.30
$35.30
$35.30 - $35.30
$35.30

Yanmar OEM Internal Engine Anode 120650-13420

$28.16 - $28.16
$28.16
$28.16 - $28.16
$28.16
Only 3 left!

The Yanmar 120650-13420 is a genuine OEM sacrificial anode designed for Yanmar marine diesel engines, providing cathodic protection for internal co...

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$28.16 - $28.16
$28.16
$28.16 - $28.16
$28.16

Volvo Penta Aluminum Pencil Engine Anode – CM838929A (Replaces 838929 / 194)

$6.39 - $6.39
$6.39
$6.39 - $6.39
$6.39
Only 4 left!

The CM838929A is a marine-grade aluminum pencil anode designed to protect internal engine cooling passages from galvanic corrosion. Installed insid...

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$6.39 - $6.39
$6.39
$6.39 - $6.39
$6.39

Aluminum Rudder Anode 3-3/4" CMR03AL 194-CMR03AL

$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99
Item locally warehoused

The CMR03AL (194-CMR03AL) is a marine-grade aluminum rudder anode sized at 3-3/4", providing sacrificial cathodic protection for rudder assemblies,...

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$15.99 - $15.99
$15.99
$15.99 - $15.99
$15.99

Aluminum Rudder Anode 4-1/2" CMR04AL 194-CMR04AL

$31.89 - $31.89
$31.89
$31.89 - $31.89
$31.89
28 in stock

The CMR04AL (194-CMR04AL) is a marine-grade aluminum rudder anode sized at 4-1/2", providing sacrificial cathodic protection for rudder assemblies,...

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$31.89 - $31.89
$31.89
$31.89 - $31.89
$31.89

Mercury OEM Aluminum Anode Kit 818298Q1 MerCruiser Alpha One

$43.56 - $43.56
$43.56
$43.56
$43.56 - $43.56
$43.56
Only 2 left!

The Mercury / Quicksilver 818298Q1 is a genuine OEM complete aluminum anode kit designed for MerCruiser Alpha One sterndrives, replacing all factor...

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

Mercury OEM Aluminum Trim Tab Anode 826134Q (Pack of 3)

$28.27 - $28.27
$28.27
$28.27 - $28.27
$28.27
Only 4 left!

The Mercury / Quicksilver 826134Q is a genuine OEM aluminum trim tab anode sold in a pack of 3, designed to provide sacrificial cathodic protection...

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$28.27 - $28.27
$28.27
$28.27 - $28.27
$28.27

Mercury OEM Aluminum Anode 893404

$44.94 - $44.94
$44.94
$44.94 - $44.94
$44.94
Only 4 left!

Genuine Mercury OEM aluminum anode (893404) providing sacrificial cathodic protection for Mercury outboard and MerCruiser sterndrive trim tabs and ...

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$44.94 - $44.94
$44.94
$44.94 - $44.94
$44.94

Aluminum Hanging Anode 11ft Cable CMT-GROUPERA

$98.15 - $98.15
$98.15
$98.15 - $98.15
$98.15
Only 5 left!

Marine-grade aluminum hanging anode (CMT-GROUPERA) with 11-foot cable providing supplemental sacrificial cathodic protection for docked or moored v...

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$98.15 - $98.15
$98.15
$98.15 - $98.15
$98.15