# 20771395 Tensioner | Genuine Volvo Penta Part

## 🔧 Product Description

Application-specific alternator tensioner arm used in the alternator mounting, pulley and belt tensioning system on the listed Volvo Penta engines. Provides the pivoting tensioner arm that positions the alternator and maintains the specified drive-belt tension.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD720VE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD520VE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 160-265 HP
-   **Year Range:** Approximately 1999 - 2012

## ⚙️ Key Features

-   Genuine Volvo Penta alternator tensioner arm
-   Direct service replacement for part number 20771395
-   Designed for the alternator mounting, pulley and belt tensioning system
-   Provides the pivoting tensioner arm that positions the alternator and maintains the specified drive-belt tension
-   Engine type: Four- and six-cylinder turbocharged industrial diesel

## 🔌 Function

Provides the pivoting tensioner arm that positions the alternator and maintains the specified drive-belt tension.

## ⚠️ Common Signs of Failure

-   Visible wobble, run-out or misalignment
-   Belt dust, glazing, edge wear or repeated belt failure
-   Binding, excessive free play or weak tensioner movement
-   Accessory speed loss, overheating or charging/cooling performance faults

## 🛠️ Service Notes

-   Inspect the complete drive, including bearings, belt condition and alignment.
-   Use the specified tightening torque and verify free rotation before starting the engine.

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   923829.0673 - Kalmar application number
-   20771411 - alternator brackets
-   20771391 - alternator brackets
-   20882914 - alternator brackets
-   20593398 - secondary tensioner
-   20773412 - 80mm hexagon screw
-   20773400 - washers
-   20460127 - washers
-   20549890 - washers
-   20773415 - rubber stops
-   978467 - 775mm V-belt set
-   978489 - 875mm V-belt set
-   20783944 - alternator pulley
-   21236925 - alternator references
-   21489722 - alternator references
-   21805948 - alternator references
-   20715635 - 28V 80A alternator references
-   3803961 - 28V 80A alternator references

### Other-Brand OEM Numbers

-   VOE20771395 - Volvo CE prefixed number format

### OEM Reman Alternatives

-   3801348 - remanufactured 14V 95A alternator
-   3801328 - remanufactured 28V 55A alternator

### Aftermarket / Verified Equivalents

-   Kalmar: 923829.0673 tensioner-arm application number

## 📦 Condition

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

## Details

- **Price:** 61.63 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 61.63 AUD | In stock |

## Images

- 20771395 Tensioner | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20771395-tensioner-genuine-volvo-penta)
> Updated: 2026-08-22