M-31640-ALU & M-34127-ALU Mercruiser Skeg Anodes (Aluminum)


M-31640-ALU & M-34127-ALU Mercruiser Skeg Anodes (Aluminum)


Mercury Mercruiser Zinc Anode 31640/34127

  1. Designed for Mercury Mercruiser engines
  2. Standard or Long Skeg design
  3. Force and Mariner compatible
  4. For use on R/MR/Alpha one sterndrives(1983-90) & prior drives. Alpha One Gen.II (1991& up)
  5. Made in USA by Sea Shield Marine
Availability: Out of stock SKU: M-31640-alu/M-34127-alu
  • Description
  • Additional information


Mercury Mercruiser Skeg Anode M-31640-ALU & M-34127-ALU

Part No

Weight(lb) Style Dimension Holes Metal
M-31640-ALU 0.44 Standard Skeg 2-1/4″ 7/16 NC Aluminum
M-34127-ALU 0.59 Long Skeg 4″ 7/16 NC Aluminum

Skeg Under anti-cavitation plate for outstanding protection. These sacrificial skegs are destroyed by stray electric current instead of your outdrive or propeller. Designed by divers and made in America, these aluminum anodes conform to Mil-Spec MIL-A-24779, providing the world’s best cathodic protection for your Mercury Mercruiser outdrive motor.

Additional information


Standard Skeg, Long Skeg