3841075 Volvo Penta Vibration Dampener | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta D4 / D6 Crankshaft Torsional Vibration Damper - Part Number: 3841075

A genuine used Volvo Penta crankshaft vibration damper and pulley assembly for selected D4 and D6 common-rail marine diesel engines.

The damper mounts to the front of the crankshaft and uses an elastomer-isolated mass to absorb torsional vibration generated by diesel combustion. It also forms part of the front belt-drive system. Volvo Penta identifies 3841075 with earlier reference 3582686, and later engine variants may use a different damper such as 23015703.

⚙️ Key Features

• Genuine Volvo Penta crankshaft vibration damper
• Correct Volvo reference 3841075
• Associated with earlier reference 3582686
• Used on selected D4 and D6 diesel engines
• Reduces crankshaft torsional vibration and belt-drive shock

🚤 Compatibility

Commonly used on

• Volvo Penta D4 marine diesel engines
• Volvo Penta D6 marine diesel engines
• Sterndrive, inboard and IPS installations using the applicable damper

Typically suits selected

• Volvo Penta D4-180
• Volvo Penta D4-210
• Volvo Penta D4-225
• Volvo Penta D4-260
• Volvo Penta D4-300
• Volvo Penta D6-280
• Volvo Penta D6-300
• Volvo Penta D6-310
• Volvo Penta D6-330
• Volvo Penta D6-340
• Volvo Penta D6-350
• Volvo Penta D6-370
• Volvo Penta D6-380
• Engines whose crankshaft diagram specifies 3582686 or 3841075
• Engine Type: Four- or six-cylinder common-rail marine diesel
• Year Range: Model, rating and serial-number controlled

🔌 Function

The damper absorbs crankshaft twisting pulses before they can create damaging vibration in the crankshaft, timing drive and accessory-belt system.

⚠️ Common Signs of Failure

• Rubber isolator is cracked or extruding
• Outer ring moves independently of the hub
• Timing or pulley marks no longer run true
• Belt vibration increases
• Engine develops a front-end knocking sound
• Damper has visible wobble or runout
• Accessory belts repeatedly fail
• Crankshaft vibration increases at a particular rpm

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3841075 associated with or replaces 3582686
• 3582686 earlier vibration-damper reference
• 23015703 is used as a later damper on certain D4 / D6 ratings, but is not confirmed as a universal direct replacement

OEM / Related Numbers

• 3841075
• 3582686
• 23015703 - later application-controlled vibration damper
• Crankshaft pulley and mounting bolts vary by engine rating
• Serpentine or auxiliary drive belt varies by D4 / D6 model

Aftermarket / Verified Equivalents

• No verified independent aftermarket equivalent
• Used and reconditioned damper assemblies are marketed under 3582686 / 3841075
• Confirm rubber condition and runout before using a remanufactured or used unit

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated