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Rudder / Trim Tab Magnesium Anodes

Two-piece pancake magnesium anode for rudders and trim tabs.  A stainless steel nut is pressed into one half, and a stainless steel socket cap screw connects the two halves together.  

These anodes are made of Mil-Spec Magnesium Alloy.

  • Highly active corrosion protection.
  • Superb self-cleaning performance.
  • Will not passivate in freshwater.

These magnesium anodes are highly recommended for vessels that operate exclusively in freshwater.

Fresh Water Use Only

Mil-Spec A-21412(SH) Magnesium Alloy

Trim Tab Corrosion

Don't let this happen to your trim tabs!
(Click to enlarge)

R-1M Rudder/Trim Tab Magnesium Anode - 1-7/8" Dia. R-2M Rudder/Trim Tab Magnesium Anode - 2-13/16" Dia.
R-1M Rudder Magnesium Anode - 1-7/8" Dia. (R1M) List Price: $12.99
Our Price: $5.35
PRODUCT SPECS

R-1M Rudder Magnesium Anode - 1-7/8" Dia. (R1M)
R-2M Rudder Magnesium Anode - 2-13/16" Dia. (R2M) List Price: $31.99
Our Price: $14.19
PRODUCT SPECS

R-2M Rudder Magnesium Anode - 2-13/16" Dia. (R2M)
R-3M Rudder/Trim Tab Magnesium Anode - 3-3/4" Dia. R-4M Rudder/Trim Tab Magnesium Anode - 5" Dia.
R-3M Rudder Magnesium Anode - 3-3/4" Dia. (R3M) List Price: $42.49
Our Price: $17.43
PRODUCT SPECS

R-3M Rudder Magnesium Anode - 3-3/4" Dia. (R3M)
R-4M Rudder Magnesium Anode - 5" Dia. (R4M) List Price: $58.49
Our Price: $32.48
PRODUCT SPECS

R-4M Rudder Magnesium Anode - 5" Dia. (R4M)
R-5M Rudder/Trim Tab Magnesium Anode - 5" Dia. Heavy
R-5M Rudder Magnesium Anode - 5" Dia. (R5M) List Price: $85.99
Our Price: $42.50
PRODUCT SPECS

R-5M Rudder Magnesium Anode - 5" Dia. (R5M)
 
Paint Stencils for R-Series Anodes – Bottom Painting Made Easy!
 
FREE!!! Bottom Paint Stencil for the R-2 Anode (One pair) FREE!!! Bottom Paint Stencil for the R-3 / R-3H Anode (One pair)
Paint Masks for the R-2 Anode List Price: $0.25
Our Price: $0.00
PRODUCT SPECS

Paint Masks for the R-2 Anode
Paint Masks for the R-3 Anode List Price: $0.30
Our Price: $0.00
PRODUCT SPECS

Paint Masks for the R-3 Anode
FREE!!! Bottom Paint Stencil for the R-4 / R-5 Anode (One pair)  
Paint Masks for the R-4/R-5 Anode List Price: $0.45
Our Price: $0.00
PRODUCT SPECS

Paint Masks for the R-4/R-5 Anode
 
 
Other Popular Trim Tab Zincs
 
T-20M Small Teardrop Magnesium Anode M-24M Magnesium Anode
T-20M Small Teardrop Magnesium Anode List Price: $12.69
Our Price: $8.39
PRODUCT SPECS

T-20M Small Teardrop Magnesium Anode
M-24M Magnesium Anode List Price: $15.99
Our Price: $8.33
PRODUCT SPECS

M-24M Magnesium Anode
Part Number Variations: R-1M, R-2M, R-3M, R-4M, R-5M, R1M, R2M, R3M, R4M, R5M, R-1MG, R-2MG, R-3MG, R-4MG, R-5MG, R1MG, R2MG, R3MG, R4MG, R5MG, R-1MG, R-2MG, R-3MG, R-4MG, R-5MG, R1MG, R2MG, R3MG, R4MG, R5MG, R1M, R2M, R3M, R4M, R5M, CMR01M, CMR02M, CMR03M, CMR04M, CMR05M, TEC-R1MG, TEC-R2MG, TEC-R3MG, TEC-R4MG, TEC-R5MG, 11140050