Feature 1、OEM Number: Replacing manufacturer part number for reference is 822157T2. Please make sure the OE number matches the part you are replacing. 2、Fitment: Trim tab anode is a good replacement for Mariner 25‑50 HP 2 stroke and 4 stroke, and Force outboard lower units from 1997‑2006. 3、Function: Boat motor trim tab anode is used as a sacrificial anode to protect propellers, struts, bearings, etc. from underwater electrolysis. 4、Advantage: Trim tab anode is a great way to protect your engine from damage, and timely replacement of anodes, reduce maintenance costs. 5、Aluminum Alloy Material: Made of high strength aluminum alloy, trim tab anode is resistant to oxidation and seawater environments, and it is also durable in saltwater environments. Item Type: Trim Tab Anode Material: Aluminum Alloy Application: Direct replacement of old or damaged anode blocks, anodes should be replaced when signs of appear to protect your engine from costly damage. OEM: 822157T2 Fitment: Replacement for Mariner 25-50 HP 2 stroke and 4 stroke, and Force outboard lower units from 1997-2006. Package List 1 x Trim Tab Anode Note 1. Please double check the part number of your item, matching information is for reference only. 2. If you are unsure of the item,