20722656 Vibration Damper | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Crankshaft Vibration Damper - Part Number: 20722656

Large crankshaft torsional vibration damper used on TAD1140VE, TAD1141VE and TAD1142VE engines. Documented service data identifies an approximately 13-inch diameter assembly weighing about 46.3 lb.

⚙️ Key Features

• Approximately 13-inch outside diameter

• Approximately 46.3 lb documented assembly weight

• Controls crankshaft torsional oscillation through the operating-speed range

• Maintains the original front-drive and pulley alignment

• Critical protective component for the crankshaft, gears and accessory drive

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20722656 (OEM vibration-damper reference)

OEM / Related Numbers:

• 21671175 crankshaft - later reference 22235000

• Crankshaft hub, pulley and front retaining hardware

• Front crankshaft sealing and accessory-drive components

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• TAD11 crankshaft front drive and torsional-vibration control

Typically suits:

• Engine models:

• TAD1140VE; TAD1141VE; TAD1142VE

• HP Range: Approximately 375-500 HP, depending on engine rating

• Engine Type: 11 L six-cylinder turbocharged/aftercooled industrial diesel

• Year Range: Approximately 2000s-2010s

🔌 Function

Absorbs torsional crankshaft oscillations created by the firing pulses, reducing stress on the crankshaft, timing drive and driven accessories.

Common signs of failure:

• Cracked, displaced or deteriorated damping element

• Visible wobble, runout or separation between damper sections

• New torsional vibration or rattling at specific engine speeds

• Repeated accessory-belt or front-drive failures

• Crankshaft, gear or front-hub damage if the damper no longer controls vibration

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging