# 20727639 Vibration Damper | Genuine Volvo Penta Part

## 🔧 Product Description

Crankshaft torsional vibration damper used on selected TAD7 generator-engine configurations, including installations with a separate fan bracket. The correct damper depends on the genset speed, output and front-drive arrangement. Application note: Confirm the engine's product number, rated speed, genset output and separate-fan-bracket configuration.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD721GE
-   Volvo Penta TAD722GE
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4

-   **Engine Family:** TAD
-   **Year Range:** Approximately late 1990s-2000s

## ⚙️ Key Features

-   Application-specific torsional damper for TAD7 generator engines
-   Controls crankshaft firing-pulse oscillation at constant genset speed
-   Compatible with the specified separate fan-bracket/front-drive arrangement
-   Maintains accessory and timing-drive durability
-   Must be matched to engine product number, rated speed and generator configuration
-   Engine type: 7 L six-cylinder turbocharged generator diesel
-   2 used per assembly

## 🔌 Function

Absorbs torsional crankshaft vibration at the engine's governed operating speed, reducing stress on the crankshaft, timing gears and driven equipment.

## ⚠️ Common Signs of Failure

-   Cracked, shifted or deteriorated damping element
-   Visible damper wobble or separation
-   New vibration or rattling at governed generator speed
-   Repeated front-drive or fan-bracket failures
-   Crankshaft or timing-gear damage if torsional vibration is uncontrolled

## 🛠️ 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

## 📦 Condition

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

## Details

- **Price:** 1871.88 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1871.88 AUD | In stock |

## Images

- 20727639 Vibration Damper | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20727639-vibration-damper-genuine-volvo-penta)
> Updated: 2026-10-08