852904 Magnetic Plug | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta magnetic plug from the Marine Propulsion group, weighing 0.018 kg and listed for 130 applications including MD, TMD, AQ, AD, AQAD and D series engines. It supersedes part number 839354, which was catalogued earlier simply as a plug.

🚤 Compatibility

• Engine Family: MD, TMD, AQ, AD, AQAD, D, BB, TAMD, MS, DP, SP, AQD, KAD, KAMD
• HP Range: 13-75 HP

Full model list at the end of this description.

⚙️ Key Features

• Magnetic
• 0.018 kg
• Supersedes 839354, previously catalogued as a plain plug
• 130 applications across six engine series

🔌 Function

Blanks off the drain while its magnet collects ferrous debris from the oil, so what it picks up tells you how the gears and bearings are wearing.

⚠️ Common Signs of Failure

• Heavy paste or metal flakes on the magnet at an oil change
• Bright chips or slivers rather than fine grey fur, which points to a real failure starting
• Weeping around the plug
• Magnet weak or the plug drive rounded out

🛠️ Service Notes

• Wipe the magnet clean at every oil change and look at what came off it - fine grey fur is normal, chips are not
• Renew the sealing washer with the plug
• The number it replaces, 839354, was catalogued as an ordinary plug, so an older list may not tell you the replacement is magnetic

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 852904 → Supersedes 839354

OEM / Related Numbers

• 839354 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 2003, 2003R, 740B, 500A, 501A, 501B, 570A, 572A, 740A, 430A, 430B, 431A, 431B, 432A, 434A, 2003TB, 231LB, 271LB, 275A, 280B, 285A, 290A, 290DP, 120S-D, 120S-E, 2001B, 2001D, 2003D, 2003T, 2003TR, 2002B, 2002D, 2003B, 2001, 570, 500B, 500, 2002, 430, 2001R
• 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 D2-40F, D2-55F, D2-50F, D2-75F, D2-60F
• Volvo Penta AQ271A, AQ271C, AQ271B, AQ271D
• Volvo Penta BB225A, BB225AV, BB225B, BB225C
• Volvo Penta MS25S, MS25S-A, MS25SR, MS25SR-A
• Volvo Penta SP-C, SP-E, SP-A2, SP-C1
• Volvo Penta TAMD31M, TAMD31A, TAMD31B, TAMD31D
• Volvo Penta AQ225D, AQ225E, AQ225F
• Volvo Penta D1-30F, D1-13F, D1-20F
• Volvo Penta TMD31A, TMD31B, TMD31D
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AD41B, AD41BJ
• Volvo Penta AQ200D, AQ200F
• Volvo Penta AQ205LB, AQ205A
• Volvo Penta AQ231A, AQ231B
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta MD22, MD22A
• Volvo Penta MS3B, MS3C
• Volvo Penta MS4B, MS4A
• 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 MS2B-A
• Volvo Penta TAMD30A
• Volvo Penta TAMD42B
• Volvo Penta TMD22A
• Volvo Penta TMD30A
• Volvo Penta TMD41B