842972 Valve Disc | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta valve disc 89 mm long, from the Inlet and Exhaust System group, listed for 104 applications across TMD, MD, TAMD, AD, AQAD and D series engines. The published weight of 0.002 kg is far too low for a valve disc of this length and cannot be used to identify the part, so order by the 89 mm length and by part number.

🚤 Compatibility

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

Full model list at the end of this description.

⚙️ Key Features

• 89 mm long
• 104 applications across TMD, MD, TAMD, AD, AQAD and D series engines
• Published weight is implausibly low and is no guide to identification
• L=89mm (Volvo assembly listing)

🔌 Function

Forms the moving face of the valve, closing against its seat to shut off flow through the passage.

⚠️ Common Signs of Failure

• Valve no longer shutting off cleanly, giving leak-past
• Disc face pitted, grooved or carboned up
• Stem worn or bent so the disc does not seat square
• Rattle or knock from the valve gear
• Seat found blued or eroded on strip-down

🛠️ Service Notes

• Order by the 89 mm length and the part number, because the published weight is clearly wrong
• Inspect the seat and guide when the disc is out, as a worn seat will destroy a new disc

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D12C-A MP, D12D-A MG, D12D-A MH, D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MH, D12D-C MP, D12D-D MP, D12D-E MG, D12D-E MH, D12D-E MP, D12D-F MP, D12D-G MH, D12D-G MP, D12D-H MP
• Volvo Penta TAMD74P-A, TAMD74P-B, TAMD74A, TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B
• Volvo Penta TAMD122A, TAMD122A/C, TAMD122D, TAMD122P-A, TAMD122P-B, TAMD122P-C
• Volvo Penta TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TAMD165A, TAMD165C, TAMD165P
• Volvo Penta TAMD72A, TAMD72P-A, TAMD72WJ-A
• Volvo Penta TMD40A, TMD40B, TMD40C
• Volvo Penta AD31, AD31B
• Volvo Penta AD41B, AD41A
• Volvo Penta AQAD40B, AQAD40A
• Volvo Penta TAMD102A, TAMD102D
• Volvo Penta TAMD120A, TAMD120B
• Volvo Penta TAMD31A, TAMD31B
• Volvo Penta TAMD40A, TAMD40B
• Volvo Penta TAMD41B, TAMD41A
• Volvo Penta TAMD60B, TAMD60C
• Volvo Penta TAMD63L-A, TAMD63P-A
• Volvo Penta TAMD70E, TAMD70D
• Volvo Penta TAMD71B, TAMD71A
• Volvo Penta TAMD73P-A, TAMD73WJ-A
• Volvo Penta TD100CHC, TD100CRC
• Volvo Penta TD120BHC, TD120BRC
• Volvo Penta TD121CHC, TD121CRC
• Volvo Penta TMD100A, TMD100C
• Volvo Penta TMD120A, TMD120B
• Volvo Penta TMD31A, TMD31B
• Volvo Penta TMD41A, TMD41B
• Volvo Penta AQAD30A
• Volvo Penta AQD40A
• Volvo Penta AQD70D
• Volvo Penta D41B
• Volvo Penta KAD32P
• Volvo Penta MD30A
• Volvo Penta MD31A
• Volvo Penta MD40A
• Volvo Penta MD70C
• Volvo Penta TAD121CHC
• Volvo Penta TAMD103A
• Volvo Penta TAMD121D
• Volvo Penta TAMD163P-A
• Volvo Penta TAMD30A
• Volvo Penta TAMD61A
• Volvo Penta TAMD62A
• Volvo Penta TAMD75P-A
• Volvo Penta TMD102A
• Volvo Penta TMD121C
• Volvo Penta TMD122A
• Volvo Penta TMD30A
• Volvo Penta TMD70C