859086 Sealing Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta sealing ring, weighing 0.005 kg and listed for 76 applications across the MD, TMD, TAMD, AD, AQAD and D series. It supersedes part number 842586. Gasket 859038 covers the same six families at 75 applications, so check which of the two your parts list calls for.

🚤 Compatibility

• Engine Family: MD, TMD, TAMD, AD, AQAD, D, TD, AQD, KAD, KAMD

Full model list at the end of this description.

⚙️ Key Features

• Supersedes 842586
• 0.005 kg
• 76 applications across six engine series
• MD, TMD, TAMD, AD, AQAD and D coverage
• 2 used per assembly

🔌 Function

Seals around a shaft, spigot or fitting, closing the annular gap so fluid cannot pass along it.

⚠️ Common Signs of Failure

• Weeping around a fitting that stays damp however hard it is tightened
• Ring found flattened, nicked or cut on removal
• Material gone hard and taken a permanent set in the groove
• Fitting that has been over-tightened to chase a leak, distorting the seat
• Staining that reappears within hours of cleaning the area

🛠️ Service Notes

• Renew the ring every time the fitting is disturbed and check the seat face for scoring or a raised burr

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 859086 → Supersedes 842586

OEM / Related Numbers

• 842586 earlier number superseded by this part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 TAMD31L-A, TAMD31M-A, TAMD31P, TAMD31P-A, TAMD31S, TAMD31A, TAMD31B, TAMD31D
• Volvo Penta TAMD41B, TAMD41D, TAMD41H-A, TAMD41H-B, TAMD41P-A, TAMD41P, TAMD41A
• Volvo Penta AD31, AD31B, AD31D-A, AD31L-A, AD31P-A, AD31XD
• Volvo Penta AD41B, AD41D, AD41L-A, AD41P-A, AD41A, AD41BJ
• Volvo Penta D41, D41B, D41D, D41L-A
• Volvo Penta TMD31A, TMD31B, TMD31D, TMD31L-A
• Volvo Penta TMD41A, TMD41B, TMD41D, TMD41L-A
• Volvo Penta KAD42A, KAD42B, KAD42P-A
• Volvo Penta KAD44P, KAD44P-B, KAD44P-C
• Volvo Penta KAMD42A, KAMD42B, KAMD42P-A
• Volvo Penta KAMD43P, KAMD43P-A, KAMD43P-B
• Volvo Penta KAMD44P-B, KAMD44P-C, KAMD44P-A
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta KAD43P-B, KAD43P-A
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD42WJ-A, TAMD42B
• Volvo Penta AQAD30A
• Volvo Penta AQD40A
• Volvo Penta KAD300-A
• Volvo Penta KAD32P
• Volvo Penta KAMD300-A
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta MD40A
• Volvo Penta TAMD30A
• Volvo Penta TD30A
• Volvo Penta TMD30A