3979500 Washer | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta washer from the Alternator, Charging, Electric Motor, Electric Drives group, listed for 27 applications across the D, TWD and TAD series. Its published weight of 0.120 kg is unusually high for a washer and does not sit sensibly against the 0.029 kg washer 3987785 in this same range, so treat the weight as no guide and order by part number.

🚤 Compatibility

• Engine Family: D, TWD, TAD

Full model list at the end of this description.

⚙️ Key Features

• 27 applications across the D, TWD and TAD series
• Alternator, Charging, Electric Motor, Electric Drives group
• Sibling washer in this range is 3987785

🔌 Function

Spreads the load of a fastener over the surface beneath it and stops the joint from digging in or working loose.

⚠️ Common Signs of Failure

• Fastener found slack after a period of running
• Washer dished, cracked or worn bright on one face
• Bearing surface beneath it indented or pulled
• Corrosion between washer and mounting face

🛠️ Service Notes

• Weights on graded washers are unreliable — order by number and check the washer against the one you removed
• Renew rather than reuse where the washer is part of an electrical earth or clamping path

📦 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 TAD1241GE, TAD1241VE, TAD1241-42VE
• Volvo Penta TAD1242GE, TAD1242VE
• Volvo Penta TAD1250VE, TAD1250-52VE
• Volvo Penta TAD1240GE
• Volvo Penta TAD1251VE
• Volvo Penta TAD1252VE
• Volvo Penta TWD1240VE