1、OEM Number: Replacing part number for reference is 6E8 45251 00, 6E8 45251 02. Please make sure the OE number matches the part you are replacing. 2、Application: Boat motor transmission anode is specially designed, suitable for 2 stroke 9.9D 15D and 4 stroke F8A, F8B, F9.9A 1988 ‑ 1993 F9.9B. 3、Strong Protection: Boat motor anode is used as a sacrificial anode to protect propellers, struts, bearings, etc. from underwater electrolysis. 4、Advantage: Outboard anode can be easily replaced and should be changed when showing signs of damage to protect your engine against costly damage. 5、Zinc Alloy Material: Using zinc alloy, anode is resistant to oxidation and seawater environments, can be used for a long time in marine enviroment.