# 20459925 Vibration Damper | Genuine Volvo Penta Part

## 🔧 Product Description

A genuine 205 mm crankshaft vibration damper for the D5A-B TA engine family. It reduces torsional oscillation in the crankshaft and helps protect the crankshaft, bearings, gear train and belt drive from repeated vibration loads.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD520VE
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, TAD, MD

## ⚙️ Key Features

-   Designed for the crankshaft torsional-vibration control assembly
-   205 mm vibration-damper diameter
-   Engine type: Volvo Penta D5 inline-four industrial diesel
-   205mm (Volvo assembly listing)

## 🔌 Function

Absorbs crankshaft torsional vibration to reduce fatigue loading across the rotating assembly.

## ⚠️ Common Signs of Failure

-   The rubber element is cracked, swollen, extruded or separating
-   Timing marks or the outer inertia ring shift relative to the hub
-   New crankshaft, belt-drive or gear-train vibration develops
-   The damper wobbles or runs out of true
-   Crankshaft or accessory-drive noise increases at particular engine speeds

## 🛠️ Service Notes

-   Treat the damper as a sealed assembly — it is not repairable, and nothing about it should be straightened, re-bonded or adjusted
-   Renew it if the rubber is cracked, swollen, oil-soaked or has moved relative to the hub, and whenever the engine has been run with a known torsional or vibration problem
-   Fit to clean, dry, undamaged mating faces, tightening the fasteners in the sequence and to the figures given in the workshop manual for your engine
-   Use new bolts wherever the manual calls for them; the loading here is cyclic and a reused or stretched fastener is a poor risk
-   While access is good, check the components it drives or couples to, and their alignment — a damper rarely fails for no reason

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20459925 - 205 mm vibration damper
-   20405540 - Related crankshaft references
-   20900811 - Related crankshaft references
-   21204112 - Related crankshaft references
-   21273414 - Related crankshaft references
-   20405529 - Related bearing references
-   20405541 - Related bearing references
-   21141948 - Related bearing references
-   21234191 - Related bearing references
-   20412286 - Related crankshaft seal
-   877337 - Related cylinder-liner kit references
-   3843536 - Related cylinder-liner kit references

## 📦 Condition

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

## Details

- **Price:** 1153.8 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1153.80 AUD | In stock |

## Images

- 20459925 Vibration Damper | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20459925-vibration-damper-genuine-volvo-penta)
> Updated: 2026-09-06