23520859 Anode Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta anodes are made to sacrifice themselves in order to protect the drive and propeller from galvanic corrosion. Volvo Penta now recommends aluminium anodes in salt and brackish water instead of the zinc previously recommended for salt water, and is gradually phasing out and replacing most of its zinc anodes with aluminium ones. Aluminium anodes give 30% higher corrosion protection capacity, up to 20-40% longer life span in salt water compared with similarly sized zinc anodes, a lower environmental impact, and are the better choice for brackish water too. Magnesium is the material listed for fresh water. This is the aluminium anode listed for spray plate, DPR, DPH, DPI drives, supplied for salt and brackish water.

🚤 Compatibility

Typically suits:

• Volvo Penta DPH-D1
• Volvo Penta D6-330A-F
• Volvo Penta D6-370A-F
• Volvo Penta D4-260A-F
• Volvo Penta D4-300A-F
• Volvo Penta D6-300A-F
• Volvo Penta D4-225A-F
• Volvo Penta D6-300A-G
• Volvo Penta D6-340A-G
• Volvo Penta D6-380A-G
• Volvo Penta DPH-E
• Volvo Penta DPI-A
• Volvo Penta D6-400A-G
• Volvo Penta D6-440A-G
• Volvo Penta D6-400A-F
• Volvo Penta D4-150A-G
• Volvo Penta D4-230A-G
• Volvo Penta D4-270A-G
• Volvo Penta D4-320A-G
• Volvo Penta D4-300A-G

• Engine Family: DPH, D, DPI
• HP Range: 150-440 HP

⚙️ Key Features

• Spray plate anode for DPR, DPH and DPI drives
• Aluminium, for salt and brackish water
• 0.796 kg
• Replaces the earlier 3588746 anode family
• Fresh water equivalent is magnesium anode 23520860
• Aluminium anode for Spray plate, DPR, DPH, DPI drives.
• Listed for salt and brackish water.
• Aluminium anodes give 30% higher corrosion protection capacity than a similarly sized zinc anode.
• Up to 20-40% longer life span in salt water than a similarly sized zinc anode.
• Lower environmental impact, and the better choice for brackish water as well as salt.
• Aluminium anodes can be used for all types of hull material.
• Volvo Penta anodes feature, where needed, an internal reinforcement made from an alloy that does not erode, which also ensures a reliable electrical connection between the anode and the drive.
• Material: aluminium
• Fits: Spray plate, DPR, DPH, DPI drives
• Aluminium sacrificial anode for the spray plate position
• Fits the Aquamatic duo prop DPR, DPH and DPI drives
• Position: spray plate
• Water type: Salt and brackish water
• Fits: the Aquamatic duo prop DPR, DPH and DPI drives

📋 Kit Contents

• 1 × aluminium cavitation-plate / lower-gear anode - 23520859
• Mounting screws are transferred or ordered separately unless included by the retail supplier

🔌 Function

Corrodes preferentially to the sterndrive housing, reducing galvanic attack on the drive and the bonded underwater metals.

⚠️ Common Signs of Failure

• Anode heavily consumed or missing
• Pitting or paint blistering appearing on the drive
• Anode painted or lacking metal-to-metal contact
• Stray current causing unusually rapid loss
• Anode material wrong for the water the boat lies in

🛠️ Service Notes

• The transom shield anode for DPH, DPR and DPI is 3588770 in aluminium, so order by position as well as by drive
• Aluminium gives around 30% higher protection capacity and up to 20-40% longer salt water life than a similarly sized zinc anode
• Fit onto clean bare metal, leave it unpainted, and renew at around half wastage
• Salt and brackish water: aluminium (or, on some older drives, cadmium-free zinc marked Zn). Fresh water: magnesium.
• When installing a new anode it is important to have good contact between the anode and the surface to which it is connected.
• If an anode has been exposed to air for a long time it can be covered by a passivating surface film that prevents it working properly; consider reactivating it with emery paper before launching. Do not use sandpaper, a wire brush or other steel tools when cleaning, as these may damage the galvanic protection.
• Water flow, salinity, temperature, pollution levels and stray current considerably affect anode life.
• Read the operator's manual for detailed information on maintaining and replacing anodes.
• Volvo Penta now recommends aluminium anodes in salt and brackish water, in place of the zinc previously recommended for salt water
• Aluminium anodes are listed as giving 30% higher corrosion protection capacity and up to 20-40% longer life in salt water than similarly sized zinc anodes, with lower environmental impact, and as the better choice for brackish water too
• Magnesium is the material listed for fresh water
• For some older drives, cadmium-free zinc anodes, marked Zn, are supplied for salt and brackish water instead of aluminium
• Volvo Penta anodes carry, where needed, an internal reinforcement in an alloy that does not erode, which also keeps a reliable electrical connection between the anode and the drive
• An anode that has been exposed to air for a long time can be covered by a passivating surface film that stops it working properly; consider reactivating it with emery paper before launching the boat
• Refer to the Operator's Manual for maintenance and replacement detail for your own product

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23520859 → Supersedes 3588746

OEM / Related Numbers

• 3589876 earlier number superseded by this part
• 3589875 earlier number superseded by this part
• 3588748 earlier number superseded by this part
• 3588746 earlier number superseded by this part
• 23520860 magnesium fresh-water equivalent

Other-Brand OEM Numbers

• VOE23520859

Aftermarket / Verified Equivalents

• Marinedustrie: aluminium replacement for 3588746 / 23520859
• Tecnoseal: 00748, 43.556.01, 43.558.01

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging