# 978739 V-Belt | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta v-belt for the MD2040 with the extra alternator, weighing 0.138 kg and listed for 16 applications across MD engines. The extra alternator is the detail that decides it — an MD2040 without that second machine takes a different belt.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD2010
-   Volvo Penta MD2010B
-   Volvo Penta MD2010-C
-   Volvo Penta MD2010-D
-   Volvo Penta MD2020
-   Volvo Penta MD2020B
-   Volvo Penta MD2020-C
-   Volvo Penta MD2020-D
-   Volvo Penta MD2030
-   Volvo Penta MD2030B
-   Volvo Penta MD2030-C
-   Volvo Penta MD2030-D
-   Volvo Penta MD2040
-   Volvo Penta MD2040B
-   Volvo Penta MD2040-C
-   Volvo Penta MD2040-D

-   **Engine Family:** MD

## ⚙️ Key Features

-   For the MD2040 with the extra alternator
-   Fits 16 applications across MD engines
-   0.138 kg
-   No published length

## 🔌 Function

Carries drive from the crankshaft pulley to the alternator on installations fitted with an additional charging machine.

## ⚠️ Common Signs of Failure

-   Squealing from the front of the engine on start-up or under load
-   One of the batteries not charging, or a charge warning light flickering
-   Cracks across the back of the belt, or glazed and shiny flanks
-   Black belt dust building up under the pulleys
-   Belt turned over in the groove or thrown off the pulley

## 🛠️ Service Notes

-   Confirm the engine has the extra alternator before ordering — belt 978482 is the MD2030 belt and 978460 covers TMD, TAMD and MD unmarked
-   Check the alignment of the additional pulley as well as the main drive when fitting

## 🔄 Supersession & Cross Reference

### Other-Brand OEM Numbers

-   Continental: 17451
-   Dayco: 13V1145
-   Dayco: 17450
-   Gates: 9451
-   Gates: 9451HD

## 📦 Condition

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

## Details

- **Price:** 68.71 AUD
- **Vendor:** Volvo Penta
- **Type:** Belts, Pulleys & Tensioners
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 68.71 AUD | In stock |

## Images

- 978739 V-Belt | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/978739-v-belt-genuine-volvo-penta)
> Updated: 2026-10-11