# 20460886 Carbon Brush | Genuine Volvo Penta Part

## 🔧 Product Description

Carbon-brush service component for the specified 28 V alternator assembly. It maintains electrical contact with the rotating slip rings so field current can be supplied to the rotor. Carbon-brush service component used in the Volvo Penta 28 V / 140 A alternator assembly. It maintains sliding electrical contact with the rotor slip rings and is catalogued with alternator 20460893 and its component group.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD720VE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD750VE
-   Volvo Penta TAD520VE
-   Volvo Penta TAD760VE

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

## ⚙️ Key Features

-   Carbon brush for the 28 V alternator, 0.007 kg
-   Catalogued with alternator 20460893
-   Listed for 6 TAD applications

## 🔌 Function

Maintains sliding electrical contact between the stationary brush holder and alternator rotor slip rings, allowing the regulator to control magnetic field current.

## ⚠️ Common Signs of Failure

-   Intermittent or low alternator output
-   Charging warning lamp remains illuminated
-   Carbon brushes worn below their service length or sticking in the holder
-   Arcing, heavy carbon contamination or damaged slip-ring surfaces
-   Charging output changes when the alternator is tapped or exposed to vibration

## 🛠️ Service Notes

-   Check the slip-ring surface for scoring and carbon build-up before fitting new brushes - a rough ring wears fresh brushes down quickly

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20460893 original 28 V / 140 A alternator
-   20580795 regulator for later alternator 20580794
-   20494172 rectifier
-   20460885 alternator gasket

### OEM Reman Alternatives

-   3803960 Volvo Penta exchange alternator

## 📦 Condition

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

## Details

- **Price:** 34.44 AUD
- **Vendor:** Volvo Penta
- **Type:** Charging & Alternators
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 34.44 AUD | In stock |

## Images

- 20460886 Carbon Brush | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20460886-carbon-brush-genuine-volvo-penta)
> Updated: 2026-10-09