3987785 Washer | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta washer from the Alternator, Charging, Electric Motor, Electric Drives group, weighing 29 grams and listed for 4 applications across the TWD and TAD series. Washer 3979500 sits in the same group with a published weight of 0.120 kg, a figure out of proportion for a washer, so use part numbers rather than weights across this pair.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD1240VE
• Volvo Penta TAD1241VE
• Volvo Penta TAD1242VE
• Volvo Penta TAD1241-42VE

• Engine Family: TWD, TAD

⚙️ Key Features

• 29 g
• 4 applications across the TWD and TAD series
• Alternator, Charging, Electric Motor, Electric Drives group
• Sibling washer in this group is 3979500

🔌 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 the washer and the mounting face

🛠️ Service Notes

• Order by part number — weights are an unreliable guide across graded washers
• Renew rather than reuse where the washer forms part of a clamping or earth path

📦 Condition

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