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Mil-Spec magnesium anodes are designed to provide superb corrosion protection for Mercruiser outdrives that operate in fresh water only.  They are the strongest anodes available and should not be used in salt or brackish water.

Fresh Water Only

Which Anodes Should I Use — Zinc, Aluminum or Magnesium?

  • For Mercruiser boats with no AC shore power connections, or having AC shore power connections with galvanic isolation, use Chart Merc-B (pdf).

Mil-Spec Magnesium Anodes

Mercruiser Bravo III Corrosion
Ouch!
Don't let this happen.
Click to enlarge.
Bravo III (2004+) Magnesium Anode Kit Bravo II & III Magnesium Anode Kit
Bravo III (2004+) Magnesium Anode Kit List Price: $119.99
Our Price: $83.14
PRODUCT SPECS

Bravo III (2004+) Magnesium Anode Kit
Bravo II & III Magnesium Anode Kit List Price: $89.99
Our Price: $59.16
PRODUCT SPECS

Bravo II & III Magnesium Anode Kit
Alpha One Gen II Magnesium Anode Kit Bravo One Magnesium Anode Kit
Alpha One Gen II Magnesium Anode Kit List Price: $119.99
Our Price: $83.55
PRODUCT SPECS

Alpha One Gen II Magnesium Anode Kit
Bravo One Magnesium Anode Kit List Price: $119.99
Price: $72.64
PRODUCT SPECS

Bravo One Magnesium Anode Kit
Alpha One Magnesium Anode Kit Alpha One Gen II Magnesium Anode Kit with Fin
Alpha One Magnesium Anode Kit List Price: $64.99
Our Price: $47.58
PRODUCT SPECS

Alpha One Magnesium Anode Kit
Alpha One Gen II Magnesium Anode Kit with Fin List Price: $119.99
Our Price: $87.84
PRODUCT SPECS

Alpha One Gen II Magnesium Anode Kit with Fin
 
Bravo 3 Propeller Nut with Magnesium Anode – Complete Bravo 3 Propeller Nut Magnesium Anode – Replacement
Bravo 3 Propeller Nut with Magnesium Anode – Complete List Price: $82.99
Our Price: $73.55
PRODUCT SPECS

Bravo 3 Propeller Nut with Magnesium Anode – Complete
Bravo 3 Propeller Nut Magnesium Anode – Replacement List Price: $37.99
Price: $20.04
PRODUCT SPECS

Bravo 3 Propeller Nut Magnesium Anode – Replacement
865182M Mercruiser Bravo III (2004+) Propeller Cone Magnesium Anode 76214-4M Mercury/Mercruiser Flat Trim Tab Magnesium Anode; No Threads
865182M Mercruiser Bravo III (2004+) Propeller Cone Magnesium Anode List Price: $17.49
Our Price: $13.91
PRODUCT SPECS

865182M Mercruiser Bravo III (2004+) Propeller Cone Magnesium Anode
76214-4M Mercury/Mercruiser Flat Trim Tab Magnesium Anode, No Threads List Price: $12.99
Price: $10.68
PRODUCT SPECS

76214-4M Mercury/Mercruiser Flat Trim Tab Magnesium Anode, No Threads
76214-5M Mercury/Mercruiser Flat Trim Tab Magnesium Anode 31640M Mercury/Mercruiser Standard Trim Tab Magnesium Anode
76214-5M Mercury/Mercruiser Flat Trim Tab Magnesium Anode List Price: $16.49
Our Price: $13.91
PRODUCT SPECS

76214-5M Mercury/Mercruiser Flat Trim Tab Magnesium Anode
31640M Mercury/Mercruiser Standard Trim Tab Magnesium Anode List Price: $19.99
Price: $12.86
PRODUCT SPECS

31640M Mercury/Mercruiser Standard Trim Tab Magnesium Anode
806190M Mercruiser Bravo Lift-Ram Magnesium Anode 806189M Mercruiser Alpha One Lift-Ram Magnesium Anode
806190M Mercruiser Bravo Lift-Ram Magnesium Anode List Price: $13.99
Our Price: $10.32
PRODUCT SPECS

806190M Mercruiser Bravo Lift-Ram Magnesium Anode
806189M Mercruiser Alpha One Lift-Ram Magnesium Anode List Price: $13.99
Price: $9.95
PRODUCT SPECS

806189M Mercruiser Alpha One Lift-Ram Magnesium Anode
806105M Mercruiser Alpha One Bearing Carrier Magnesium Anode 806188M Mercruiser Bravo One Bearing Carrier Magnesium Anode
806105M Mercruiser Alpha One Bearing Carrier Magnesium Anode List Price: $29.99
Our Price: $17.80
PRODUCT SPECS

806105M Mercruiser Alpha One Bearing Carrier Magnesium Anode
806188M Mercruiser Bravo One Bearing Carrier Magnesium Anode List Price: $18.49
Price: $13.71
PRODUCT SPECS

806188M Mercruiser Bravo One Bearing Carrier Magnesium Anode
55989M Mercruiser Alpha One Nut Magnesium Anode 821631M Mercruiser Alpha One Gimbal Magnesium Anode
55989M Mercruiser Alpha One Nut Magnesium Anode List Price: $8.49
Our Price: $6.57
PRODUCT SPECS

55989M Mercruiser Alpha One Nut Magnesium Anode
821631M Mercruiser Alpha One Gimbal Magnesium Anode List Price: $28.99
Price: $21.76
PRODUCT SPECS

821631M Mercruiser Alpha One Gimbal Magnesium Anode
Deep Socket for Installing Bravo 3 Propeller Nut Anodes Martyr X-1M Shaft Magnesium Anode - 3/4"
Deep Socket for Installing Bravo 3 Propeller Nut Anodes List Price: $79.99
Our Price: $52.98
PRODUCT SPECS

Deep Socket for Installing Bravo 3 Propeller Nut Anodes
Martyr X-1M Shaft Magnesium Anode - 3/4" List Price: $24.79
Our Price: $14.26
PRODUCT SPECS

Martyr X-1M Shaft Magnesium Anode - 3/4"
 
DP-612M Magnesium Anode Mini Divers Dream Magnesium Anode
DP-612M Magnesium Anode List Price: $72.99
Our Price: $59.02
PRODUCT SPECS

DP-612M Magnesium Anode
Mini Divers Dream Magnesium Anode List Price: $37.99
Price: $26.20
PRODUCT SPECS

Mini Divers Dream Magnesium Anode
R-3M Rudder Magnesium Anode - 3-3/4" Dia. HangTuff™ Magnesium Anode
R-3M Rudder Magnesium Anode - 3-3/4" Dia. List Price: $39.99
Our Price: $20.79
PRODUCT SPECS

R-3M Rudder Magnesium Anode - 3-3/4" Dia.
Hanging Magnesium Anode List Price: $99.99
Price: $69.35
PRODUCT SPECS

Hanging Magnesium Anode
Part Number Variations: CMBRAVO3KITM, 710-888760Q02, CMBRAVO23KITM, 710-888760Q01, CMBRAVO1KITM, 710-888757Q01, CMALPHAKITM, 710-888755Q01, 710-888755Q02, CMPNDMF14UNS, CMPNMD, 865182M, CM865182CM, 710-865182A02, 76214-5M, 762145M, CM762145M, 710-76214A 6, 710-76214A6, 76214-4M, 762144M, CM762144M, 710-76214 6, 806190M, CM806190M, 710-806190A 2, 710-806190A2, 806189M, CM806189M, 710-806189A 2, 710-806189A2, 806105M, CM806105M, 710-806188A 2, 710-806188A2, 806188M, CM806188M, 710-806188A 2, 710-806188A2, 55989M, CM55989M, 710-55989T 3, 710-55989T3, 821631M, CM821631M, 710-821631T 3, 710-821631T3