# 21841987 Pulley | Genuine Volvo Penta Part

## 🔧 Product Description

Small factory belt pulley used in a Volvo Penta engine accessory drive. Its groove profile, diameter and offset are specific to the matching bracket, shaft and belt path.

## ⚙️ Key Features

-   Factory belt-groove profile
-   Correct diameter and offset
-   Maintains belt tracking
-   Compact accessory-drive pulley
-   Select by engine product and serial number
-   Engine type: Volvo Penta diesel engine

## 🔌 Function

Guides or drives the accessory belt while maintaining the specified belt path and speed ratio.

## ⚠️ Common Signs of Failure

-   Worn or polished belt grooves
-   Belt fraying or misalignment
-   Noise from the associated bearing or shaft
-   Cracked or damaged mounting centre

## 🛠️ Service Notes

-   Inspect the belt running surfaces before fitting — a pulley with glazed, scored, pitted or rust-roughened grooves will chew through a new belt in very little running time
-   Check that the pulley runs true and that its bearing or bush turns smoothly with no roughness or side play; fit a new belt whenever a pulley is changed
-   Confirm that every pulley in the drive lies in the same plane and that the belt profile matches each groove — misalignment shows up as belt dust, squeal or a worn belt edge and will destroy a new belt quickly
-   Fit onto a clean, dry, burr-free shaft or hub face and tighten the retaining fasteners in the sequence and to the figures given in the workshop manual for your engine
-   Turn the engine over by hand before starting to confirm the belt is fully seated in every groove and that nothing fouls, then recheck belt tension after the first running period

## 📦 Condition

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

## Details

- **Price:** 54.19 AUD
- **Vendor:** Volvo Penta
- **Type:** Belts, Pulleys & Tensioners
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 54.19 AUD | In stock |

## Images

- 21841987 Pulley | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21841987-pulley-genuine-volvo-penta)
> Updated: 2026-09-06