SEI Annotation (Mercury Compatible)
SEI Anode is a marine protection part specifically designed for Mercury outboard motors, replacing the original OE# 89949A1. It is produced from a high-purity alloy as a sacrificial anode to protect the metal components of the engine and stern drive from galvanic corrosion in seawater.
Anode Advantages and Features
- Galvanic Corrosion Protection: Protects the engine by sacrificing itself to prevent corrosion of the aluminum stern drive housing.
- High-Purity Alloy: Cast from high-purity zinc or aluminum alloys conforming to international marine standards.
- Perfect Geometric Fit: Precisely sized to fit directly into original mounting slots and screw holes.
Technical Specifications
| Brand | SEI (Aftermarket / Equivalent) |
| OEM Reference Number | 89949A1 |
| Compatible Systems | Mercury outboard motors |
| Product Group | Cathodic Corrosion Protection (Anodes) |
Area of Application and Use
For boats operating in saltwater or brackish water conditions, the anode must be replaced when 50% of its volume has eroded, as its corrosion protection capability will weaken.
Maintenance and Installation Recommendations
Anodes should never be painted, sanded, or greased. To ensure full electrical contact, old oxides on the mounting surface should be cleaned with sandpaper.
Frequently Asked Questions
When should the anode be replaced?
It should be replaced when 50% of its volume has eroded, or at least once per season.
Is this anode an OEM part?
No, this product is an aftermarket (equivalent) product that works perfectly with the original part. It replaces the original Mercury part with OE# 89949A1.
Related Products and Categories
- Anode Products
- Gear Oils Products
- Seal Products
- Impeller Products
- Mercury Products
- Mercury Spare Parts Products
- Inboard Engine Products
Is This the Right Product for Your Boat?
Provide your engine brand, model, and stern drive serial number to the Clever Marin team, and let's confirm together that the SEI Anode model will be 100% compatible with your boat.
Delivery Information
Your orders are dispatched within an average of 28 business days. Free shipping on orders of 5000 TL and above.
Return Policy
You can return the products you purchased unconditionally within 14 days, provided they are unused and in their original packaging. You can contact us through our Customer Service page for return processes.