Anodes & Corrosion Protection

The CMT-R04 is a 5" zinc rudder anode (R-4 style) designed to protect rudders and trim tabs from galvanic corrosion in saltwater environments. This...

The CMT-R03AL is a 3-3/4" aluminum rudder anode (R-3 style) designed to protect rudders and trim tabs from galvanic corrosion. This compact clamshe...

The CMT-R03 is a 3-3/4" zinc rudder anode (R-3 style) designed to protect rudders and trim tabs from galvanic corrosion in saltwater environments. ...

The CMT-R02AL is a 2-13/16" aluminum rudder anode designed to protect rudders and submerged metal components from galvanic corrosion. Manufactured ...

Zinc rudder anode 2-13/16" designed for marine corrosion protection. This sacrificial anode protects rudders and underwater metal components from g...

The CMT-R01 is a 1-7/8" round zinc rudder anode designed to protect rudders and trim tabs from galvanic corrosion. This two-piece “pancake” style a...

Martyr zinc sacrificial propeller nut replacement anode (part #CMT-PNZH / PN-H-ZN), H-style pattern. Replacement anode only — not the complete prop...

The Martyr CMT-PNZF is a zinc replacement propeller nut anode in the F-style pattern, designed to help protect propeller shafts and propellers from...

The Martyr CMT-PNZC is a zinc replacement propeller nut anode in the C-style pattern, designed to help protect propeller shafts and propellers from...

The Martyr CMT-PNZB is a zinc replacement propeller nut anode in the B-style pattern, designed to help protect propeller shafts and propellers from...

The Martyr CMT-PNZA is a zinc replacement propeller nut anode in the A-style pattern, designed to help protect propeller shafts and propellers from...

The CMT-PNDAF14 is a 7/8" aluminum propeller nut anode designed to protect propeller nuts, shafts, and surrounding running gear from galvanic corro...

Martyr CMT-PNAZC13 is a zinc propeller nut assembly designed for shaft-driven propeller applications using a 1/2"-13 NC thread. This complete zinc/...

Martyr CMT-P075612Z is a zinc plate anode measuring 3/4" x 6" x 12", built for sacrificial corrosion protection on properly bonded metal surfaces i...

The CMT-H2B4375GA is a 4" round Style B aluminum hull anode with a 1/2" center mounting hole, designed to protect bonded underwater metals from gal...

Martyr CMT-H2B25GZ zinc Style B round hull anode, 2" diameter with 3/8" mounting hole. Sacrificial zinc anode for hull corrosion protection. Match ...

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

The CMT-EZ4 is a zinc engine anode (E4 style) with 1/2" UNC thread, designed to protect internal engine cooling systems from galvanic corrosion. In...

The CMT-EZ3 is a zinc engine anode (E3 style) with 1/2" UNC thread, designed to protect internal engine cooling systems from galvanic corrosion. In...

The CMT-EZ2 is a zinc pencil engine anode (E-2 type) with 7/16"-14 UNC thread, designed to protect internal engine cooling passages from galvanic c...

The CMT-EZ1H is a zinc engine anode (E1H style) with 3/8" UNC thread, designed to protect internal engine cooling systems from galvanic corrosion. ...

The CMT-EZ1 is a zinc engine anode with 3/8" UNC thread, designed to protect internal engine cooling passages and components from galvanic corrosio...

Zinc anode replacement for E00 series with 1/4" UNC thread, designed for marine corrosion protection. This sacrificial anode protects underwater me...

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...

Martyr CMT-E4 is a zinc pencil anode sized 3/4" NPT x 3/4" x 3-3/8", used to help protect marine engine cooling passages, heat exchangers, oil cool...

Martyr Zinc Pencil Anode 3/8" NPT × 1/2" × 1" – CMT-E1GShort-body sacrificial zinc pencil anode for engine cooling systems, heat exchangers, and ra...

Martyr CMT-E1 is a zinc pencil anode sized 3/8" NPT x 1/2" x 2", used to help protect marine engine cooling passages, heat exchangers, and related ...

Martyr CMT-E00 is a zinc pencil anode sized 1/8" NPT x 1/4" x 2", designed to help protect marine engine cooling passages, heat exchangers,...

Premium zinc anode kit engineered for Volvo Penta DPH and DPR drive systems. Complete corrosion protection solution designed to safeguard critical ...

The Martyr CMT-DPHKITA is an aluminum anode kit for Volvo Penta DPH and DPR sterndrives, built to help protect the drive from galvanic corrosion in...

Martyr CMT-DIVERZ zinc Diver's Dream hull anode, 1/2" × 12" × 6". Large flat plate sacrificial zinc anode for hull corrosion protection. Easy bolt-...

The CMT-DIVERMINIA is a low-profile aluminum hull anode designed specifically for diver-installed corrosion protection. Its slim 1/2" profile allow...

Martyr CMT-DIVERMINI zinc Diver's Dream hull anode, 1/2" × 4" × 6". Flat plate sacrificial zinc anode for hull corrosion protection. Easy bolt-on i...

Martyr CMT-DIVERHZ is a zinc Diver’s Dream heavy-duty hull anode measuring 1" x 12" x 6". This bolt-on hull/transom-style sacrificial anode is desi...

The CMT-DIVERA is a large-format low-profile aluminum hull anode designed for maximum corrosion protection on vessels requiring extended coverage. ...

Martyr Zinc Shaft Collar Anode 30mm ID – CMT-C30Sacrificial zinc donut/collar anode for 30mm metric propeller shafts. Slides over the shaft to prot...

Martyr CMT-C13 zinc donut shaft anode, 3" ID × 1-1/2" × 5". OEM-grade sacrificial zinc anode for marine propeller shaft corrosion protection. Match...

The CMT-C07AL is a 1-1/2" aluminum donut shaft anode designed to protect propeller shafts and running gear from galvanic corrosion. This two-pi...

Martyr CMT-C07 zinc donut shaft anode, 1-1/2" ID × 1-1/4" × 3". Sacrificial zinc anode for marine propeller shaft corrosion protection. Match by sh...

Martyr CMT-C06 zinc donut shaft anode, 1-3/8" ID × 1-1/4" × 3". Sacrificial zinc anode for marine propeller shaft corrosion protection. Match by sh...

Martyr CMT-C02 is a zinc limited-clearance shaft collar anode designed for 7/8" propeller shafts. This split collar shaft anode helps protect prope...

The MerCruiser Bravo 3 Zinc Anode Kit CMT-BRAVO3KITZ is a complete sacrificial anode kit for Bravo 3 sterndrives from 2004 and newer. This kit is d...

Martyr CMT-BNT1AKITZ zinc anode kit for Bennett trim tabs, 3.78" — includes 2 anodes. Sacrificial zinc anodes designed to fit Bennett trim tab syst...

The CMT-BNT1AKITA is a complete aluminum trim tab anode kit designed specifically for Bennett trim tab systems. Engineered to protect trim tabs and...

The CMT-984547Z is a zinc block anode designed for OMC Cobra sterndrives, providing sacrificial corrosion protection for the transom, gimbal plate,...

The CMT-8M0116590KITA is a complete aluminum anode kit designed for Mercury Verado Pro Series L6 350–400HP outboards, replacing all factory-install...

The Martyr CMT-89949 is a zinc bracket / transom bracket anode for select Mercury / Mariner outboard applications. Current listings consistently id...

The Mercury Verado 6 Trim Cylinder Zinc Anode 892227Z is a sacrificial corrosion-protection anode used on Verado 6-cylinder trim-cylinder applicati...