876138 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 magnesium anode listed for lower gear, 280, 290, DP drives, supplied for fresh water.

🚤 Compatibility

• Engine Family: MD, TMD, AD, AQAD, D, AQ, TSK, TAMD, BB, DP, SP, MS, AQD, KAD, KAMD

Full model list at the end of this description.

⚙️ Key Features

• Lower gear anode for the duo prop 280, 290 and DP drives
• Magnesium, for fresh water
• 0.197 kg
• Salt and brackish water equivalent is aluminium anode 23974010
• Single prop and SP fresh water equivalent is 876137
• Magnesium anode for Lower gear, 280, 290, DP drives.
• Listed for fresh 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: magnesium
• Fits: Lower gear, 280, 290, DP drives
• Magnesium sacrificial anode for the lower gear position
• Fits the Aquamatic duo prop 280, 290 and DP drives
• Position: lower gear
• Water type: Fresh water
• Fits: the Aquamatic duo prop 280, 290 and DP drives

🔌 Function

Corrodes sacrificially in place of the drive castings, absorbing the galvanic attack that would otherwise pit the housings.

⚠️ Common Signs of Failure

• Anode more than half eaten away
• Anode still bright after a season, meaning it is not bonded to the drive
• White powdery deposits or pitting on the gear housing
• Anode loose on wasted or seized fixings

🛠️ Service Notes

• Confirm the drive is a duo prop - the single prop and SP lower gear takes 876137
• Magnesium suits fresh water; a boat kept in salt or brackish water takes aluminium anode 23974010 for this position
• Clean the seat to bright metal and leave the anode unpainted so it makes proper electrical contact
• 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

Aftermarket / Verified Equivalents

• Orbitrade: 19821-2

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 740B, 500A, 501A, 501B, 570A, 572A, 740A, 430A, 430B, 431A, 431B, 432A, 434A, 231LB, 271LB, 275A, 285A, 290A, 570, 500B, 500, 430
• Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-E, DP-G, DP-A, DP-A2, DP-B, DP-B1
• Volvo Penta AD31, AD31B, AD31D, AD31D-A, AD31XD
• Volvo Penta AQ271A, AQ271C, AQ271B, AQ271D
• Volvo Penta SP-C, SP-E, SP-A2, SP-C1
• Volvo Penta TAMD31M, TAMD31A, TAMD31B, TAMD31D
• Volvo Penta TMD31A, TMD31B, TMD31D
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AD41B, AD41BJ
• Volvo Penta AQ205LB, AQ205A
• Volvo Penta AQ231A, AQ231B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD41B, TAMD41P
• Volvo Penta AD30A
• Volvo Penta AD40B
• Volvo Penta AQ211A
• Volvo Penta AQAD30A
• Volvo Penta AQD40A
• Volvo Penta BB740A
• Volvo Penta D41B
• Volvo Penta KAD42B
• Volvo Penta KAMD42B
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta MD40A
• Volvo Penta MS4B
• Volvo Penta TAMD30A
• Volvo Penta TAMD42B
• Volvo Penta TMD30A
• Volvo Penta TMD41B
• Volvo Penta TSK DP-E