3847678 Vibration Damper | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta vibration damper from the Engine group, weighing 13.921 kg and listed for 24 applications on D series engines. It supersedes part number 3841145.

🚤 Compatibility

• Engine Family: D

Full model list at the end of this description.

⚙️ Key Features

• 13.921 kg
• 24 applications on D series engines
• Supersedes 3841145
• Engine group
• 2 used per assembly

🔌 Function

Absorbs crankshaft torsional vibration through its damping element, keeping those twisting pulses away from the crank, gears and driven components.

⚠️ Common Signs of Failure

• New vibration or a booming note at certain revs
• Rubber element cracked, bulging or extruded out of the ring
• Timing marks on the outer ring no longer lined up with the hub
• Wobble or run out visible with the engine idling
• Belt tracking badly or throwing dust as the ring moves

🛠️ Service Notes

• A damper is a safety-critical, non-serviceable item — do not attempt to repair one, and renew it if the element has moved or degraded
• At almost 14 kg support the damper properly during removal and fitting, and use new bolts where the workshop manual calls for them
• Check the crankshaft flange and the driven belts for damage, since a failed damper often takes them with it

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3847678 → Supersedes 3841145 → Supersedes 3812363 → Supersedes 3586367 → Supersedes 3836282

OEM / Related Numbers

• 3841145 earlier number superseded by this part
• 3812363 earlier number superseded by this part
• 3586367 earlier number superseded by this part
• 3836282 earlier number superseded by this part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 D11B3-A MP, D11B4-A MP, D11A-A, D11A-B, D11A-C, D11A-E, D11B2-A MP, D11A-C MP, D11A-D MP, D11A-E MP, D11A-C (IPS), D11B1-A MP
• Volvo Penta D9A2J, D9A2G, D9A2L MH, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2M MP, D9A2A, D9A2C, D9A2E