Mercury MerCathode Gen III Control Unit Kit (Black with Blue Decal) 42600A09

Mercury MerCathode Gen III Control Unit Kit (Black with Blue Decal) 42600A09 is a genuine Mercury/Quicksilver OEM replacement control unit for MerCathode Gen III corrosion protection systems. Designed for Mercury outboards and MerCruiser sterndrives equipped with a MerCathode system, this replacement control unit helps protect underwater metal components from galvanic corrosion in both freshwater and saltwater environments.

Compatible with the following:

• Mercury outboards equipped with MerCathode Gen III systems
• MerCruiser sterndrives equipped with MerCathode Gen III systems

This replacement kit includes the black Gen III control unit with the blue decal and is designed to reconnect to your existing MerCathode wiring and underwater components. The solid-state controller continuously monitors operating conditions and automatically adjusts output based on water chemistry, temperature, and the amount of submerged metal requiring protection.

Galvanic corrosion can shorten the life of lower units, sterndrives, and other underwater components when dissimilar metals are exposed to water. A properly functioning MerCathode system provides an added layer of protection beyond sacrificial anodes, helping reduce corrosion and extend the service life of your propulsion system.

Quicksilver is Mercury Marine's official parts and accessories brand, offering the same OEM quality and fit as Mercury-branded components.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.