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183 Products

$173.75$0.85

Anodes & Zincs

Anodes & zincs for hull, shaft, prop & rudder & engine. From Canada Metal, Performance Metal, Sierra and more available

183 Products

From: $7.25
Martyr Zinc Replacement Prop Nut Fasteners
Mfr: Canada Metal (Martyr Anodes)
From: $12.45
Martyr Volvo Outdrive Anode
Mfr: Canada Metal (Martyr Anodes)
$6.49
Aqua-Pacific Wire-On Aluminum Anode, 1 lb
SKU: 472696
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Mfr: Aqua-Pacific
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Mfg# 2CPALUM
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LFS# SHP2CPALUM
From: $3.85
Rudder Anodes, Aluminum
Mfr: Canada Metal (Martyr Anodes)
$3.65
1/2LB WIRE ON CRABPOT ANODE
SKU: 531166
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Mfr: Sharp Inc.
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Mfg# ALZINC
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LFS# ALZINC
$52.10
Mercury Bravo III Kit, 04-Present, Zinc
SKU: 256943
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Mfr: Canada Metal (Martyr Anodes)
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Mfg# CMBRAVO3KITZ
$86.89
Mercury Bravo III Kit, 04 - Present, Magnesium
SKU: 206621
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Mfr: Canada Metal (Martyr Anodes)
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Mfg# CMBRAVO3KITM
$27.12
Martyr, Yamaha Anode Kits, Aluminum, 150 - 200 HP Outboards
SKU: 256913
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Mfr: Canada Metal (Martyr Anodes)
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Mfg# CMY150KITA
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LFS# CMY150KITA
$30.90
Martyr, Yamaha Anode Kits, Aluminum, 200 - 300 HP Outboards
SKU: 256916
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Mfr: Canada Metal (Martyr Anodes)
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Mfg# CMYHP200300KITA
From: $12.45
LIMITED CLEARANCE SHAFTS
Mfr: Canada Metal (Martyr Anodes)
$6.12
Anode
SKU: 331793
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Mfr: Sierra / Seastar Solutions
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Mfg# 23-6400
$14.93
Anode - Mercruiser 34127A1, 34127T2
SKU: 158001
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6012
$18.48
Anode - Mercruiser 34762A1
SKU: 157929
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6013
$19.75
Anode - Mercruiser 43994A2, 821631Q 1
SKU: 157955
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6066
$32.73
Anode - Mercruiser 806105 (Magnesium)
SKU: 157958
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6079
$16.39
Anode - Mercruiser 806189A1, 806189Q 1, 806189T1
SKU: 157992
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6114
$37.29
Anode - Mercruiser 806190
SKU: 157961
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6089
$41.60
Anode - Mercruiser 806190A1, 806190Q1, 806190T1
SKU: 157964
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6092
$32.10
Anode - Mercruiser 821629, 821629Q1
SKU: 157973
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6099
$31.17
Anode - Mercruiser 821629A1, 821629Q1, 821629T1
SKU: 157960
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6080
$32.72
Anode - Mercruiser 821630Q1
SKU: 157993
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6240
$7.35
Anode - Mercruiser 826134, 826134Q
SKU: 157956
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6068
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LFS# SIE186068
$16.55
Anode - Mercury/Mariner 43396A2, 818298A1, Q1
SKU: 158000
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6249
$28.97
Anode - OMC 3855412
SKU: 157976
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Mfr: Sierra / Seastar Solutions
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Mfg# 18-6102

 

Marine Anodes and Zincs are necessary for preventing galvanic metal corrosion in boat drive systems. We supply anodes for outdrives, sterndrives, propeller shaft and propellers by popular brands like Canada Metals, Martyr Anodes and Aqua-Pacific.

 

Hull Anodes

 

Hull Anodes are used when you have underwater fittings bonded together electrically. The hull anode depletes instead of underwater metal fittings. These anodes must be carefully monitored to protect the propeller, through-hulls or the entire hull of metal boats.

 

Shaft and Prop Anodes

 

Shaft zincs or anodes are typically fashioned in two pieces and bolted together around the propeller shaft. Propeller zincs may be a ring zinc or a zinc prop nut. Metal rudders, struts and fins are easily protected with zinc anode disks bolted through them.

 

What is Galvanic Corrosion and Why You Need Anodes?

 

Sacrificial Zincs or Anodes are used anytime you have different metals that are physically or electrically connected and immersed in water. These submerged metals will cause some amount of electrical current to flow between them. The electrons that make up that current flow are supplied by the loss of one of the metals. Metal is lost in the form of metal ions - directly into the water! Temperature and salinity (how salty the water is) also factor into how rapidly the metal is corroded. This is called galvanic or dissimilar metal corrosion and if left unchecked, it can quickly destroy underwater metals.

 

Common metals subject to galvanic corrosion are bronze or aluminum propellers on a stainless steel shaft; but rudders, rudder fittings, metal struts, outboards, stern drives as well as heat exchangers and through-hull fititngs are also at risk. The way to counteract galvanic corrosion is to add a third metal into the circuit, one that gives up its electrons easier than the metals you want to preserve. This piece of metal is called a sacrificial anode, and most often it is zinc. In fact, most boaters refer to sacrificial anodes simply as zincs.