A standard skeg trim tab anode, suitable for use in salt water. Mercury part number 31640 - fits 35HP and above engines with 7/16 inch UNC fitting. This is the same as Tecnoseal part number 01411 and 01101-1. Equivalent to old part CM31640Z.

The zinc trim tab anode is manufactured to US MIL Spec by Tecnoseal in Italy, one of the world's leading suppliers of sacrificial anodes for cathodic protection in the leisure boat market. Every zinc anode sold by Anode Outlet is genuine and manufactured to the highest quality anode specification. Item(s) shown in image may not come in manufacturers branded packaging due to production processes.

Fits the following sterndrives:

Mercury replacement part: 31640Q4 (fits Alpha 1, 120, 140, 470, 485 R, MR), Mercury 50hp.
Honda BF75AT/AW, BF90AT/AW, as replacement for 41107-ZW1-003-ZA.
Fits Mariner 40-60HP engines manufactured after 1991 as a replacement for 679-45251-00.

Also available in:
Aluminium - 00800AL.
Magnesium - 00800MG.

Sold in the following kits:
KITALPHAONEGEN1.
KIT75-115EFI.

Specifications:

Please refer to the diagram in the product images.
h: 61mm.
h1: 19mm.
Ø: 91mm.
m: 7/16" UNC.
Weight: 0.46kg.

Useful Links:

Category: Explore our full range of trim tab anodes for sterndrives.
Blog: Fitting anodes to trim tabs and rudders.
Blog: How often should a sacrificial anode be replaced on a boat?
Blog: Cathodic protection for boats.
Blog: Aluminium versus zinc anodes.