The small maintenance item that helps protect expensive underwater hardware.
Your anodes are the cheapest part on the boat.
Galvanic corrosion happens when dissimilar metals are electrically connected in water. The sacrificial anode is designed to corrode first so your drive, prop, lower unit, and underwater metal parts do not.
If anodes look untouched after a season, check bonding and metal-to-metal contact. If they are half gone, replace them before the expensive metal starts paying the price.
Material choiceMatch the metal to your water.
A strong choice for salt and brackish water and often used on boats that move between water types. Confirm the engine or drive manufacturer’s recommendation for your setup.
Freshwater only. More active, so it protects in lakes and rivers but can disappear quickly in saltwater.
Traditional saltwater material. It may not dissolve fast enough in pure freshwater to protect the drive correctly.
Choose the kit that matches your drive.
Tecnoseal Bravo 3 Complete Kit
For post-2004 Mercury Bravo 3 dual-prop drives. Choose aluminum, magnesium, or zinc based on water type and the drive manufacturer’s recommendation.
- Complete kit with hardware
- Verify 2004+ Bravo 3 fitment before ordering
- Do not mix anode materials on the same drive
Tecnoseal Bravo 2-3 Pre-2004 Kit
Older Bravo 2 and pre-2004 Bravo 3 drives use a different pattern than newer Bravo 3 kits.
- Use the pre-2004 fitment
- Match the alloy to water type and manufacturer guidance
- Inspect old hardware and bonding while replacing
Tecnoseal Bravo 1 Aluminum Kit
For Mercury Bravo 1 single-prop drives. Aluminum is commonly used where salt, brackish, or changing water conditions make it appropriate.
- Fits Bravo 1 drives
- Confirm alloy for your water type and drive
- Clean mount surfaces before installing
Performance Metals Alpha 1 Gen 2 Kit
For MerCruiser Alpha 1 Gen 2 drives. Confirm Gen 2 fitment because Gen 1 drives use a different kit.
- Complete Alpha 1 Gen 2 kit
- Popular fitment for many stern-drive boats
- Replace when half consumed
Performance Metals Verado 6 Kit
For Mercury Verado 6-cylinder outboards. Twin-engine boats need one kit per engine.
- Verado 6-specific fitment
- Good shortcut for offshore center consoles
- Verify 6-cylinder platform before ordering
Tecnoseal Yamaha V6 Kit
For Yamaha 200, 225, 250, and 300 HP V6 outboards. Confirm V6 fitment before ordering.
- For Yamaha V6 outboards
- Single and twin installations
- Do not use on different Yamaha platforms without confirming fitment
Replace before you have to.
Inspect anodes at least annually in freshwater and more often in saltwater. Replace when about half consumed. Clean contact points and never paint over anodes.