Volvo Penta™ Anodes CM3863206Z Martytr

Volvo Penta anode part number 3863206 (or equivalent CM3863206) is a sacrificial anode used on the cavitation plate of several Volvo Penta Aquamatic sterndrive models, including the DPS, DPH, DPR, and SX-A drives

Anode Details and Application
This anode is a crucial component of the cathodic protection system, designed to corrode itself and prevent galvanic corrosion on the more critical, expensive metal parts of the sterndrive and underwater hardware.

Location: It is mounted on the cavitation plate (also known as the spray plate) of the compatible sterndrive models.
Material: The specific part number 3863206 is typically a zinc anode, which is recommended for use in saltwater environments.
Water Type: Anodes should be selected based on the water type where the boat is primarily used:
Zinc (as in 3863206) for saltwater.
Aluminum for salt and brackish water (often now the preferred option by Volvo Penta for these environments).
Magnesium for freshwater.
Compatibility: It is compatible with the following Volvo Penta drive systems:
DPS (including DPS-A, DPS-B)
DPH
DPR
SX-A

According to sources like Anode Outlet, while there are slight height differences between the DPH and DPR versions, they are often interchangeable as the bolt centers and other dimensions are the same. The anode should be inspected regularly and replaced when it is worn down by more than one-third to ensure effective protection.