What is a QL active corrosion Protection system?

The QL Active Corrosion Protection System helps prevent galvanic corrosion from attacking the metal parts of your sterndrive or outboard. This system complements the sterndrive/outboard sacrificial anodes and is not intended to replace those.


The reference anode senses the electrical potential of the surrounding water and sends a signal to the control unit, which in turn sends an appropriate current to the active anode.

Different combinations of water temperature, chemical composition and exposed surface require different levels of current. The active anode then emits varying levels of ions into the water surrounding the drive, and these ions effectively prevent galvanic corrosion, ultimately protecting the drive.

Read more in the Volvo Penta accessory catalogue