M-31640 & M-34127 Mercruiser Skeg Anodes (Zinc)


M-31640 & M-34127 Mercruiser Skeg Anodes (Zinc)


Mercury Mercruiser Standard and Long Skeg Trim Tab Anode

  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
SKU: M-31640/M-34127
  • Description
  • Additional information


Mercury Mercruiser Trim Tab Anode M-31640 & M-34127

Part No Weight(lb) Style Dimension Holes Metal
M-31640 1.08 Standard Skeg 2-1/4″ 7/16 NC Zinc
M-34127 1.47 Long Skeg 4″ 7/16 NC Zinc

Skeg Under anti-cavitation plate for outstanding protection. These sacrificial trim tab anodes are destroyed by stray electric current instead of your outdrive or prop. Designed by divers and made in America, these zinc skeg anodes conform to Mil-Spec MIL-A-18001, providing the world’s best cathodic protection.

Additional information


Standard Skeg, Long Skeg