# 978740 V-Belt | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta v-belt weighing 0.265 kg and listed for 10 applications across TWD, TID and TD engines, superseding part number 966846. The note against it reads Alt with a length of 2 x 1150 mm, so this covers a pair of 1150 mm belts running together rather than a single belt.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TWD610V
-   Volvo Penta TWD710V
-   Volvo Penta TWD731VE
-   Volvo Penta TID71A
-   Volvo Penta TD730VE
-   Volvo Penta TD71A
-   Volvo Penta TD630VE
-   Volvo Penta TWD630VE
-   Volvo Penta TD640VE
-   Volvo Penta TD610V

-   **Engine Family:** TWD, TID, TD

## ⚙️ Key Features

-   2 x 1150 mm — a paired belt length, noted as Alt
-   Fits 10 applications across TWD, TID and TD engines
-   0.265 kg
-   Supersedes 966846

## 🔌 Function

Carries drive from the crankshaft pulley to an engine-driven accessory as a pair of belts sharing the load.

## ⚠️ Common Signs of Failure

-   Squealing from the front of the engine on start-up or under load
-   One belt visibly slacker or running deeper in its groove than the other
-   Cracks across the back of a belt, or glazed and shiny flanks
-   Black belt dust building up under the pulleys
-   Charge warning light flickering, or the alternator falling behind

## 🛠️ Service Notes

-   Renew both belts together — a new belt run against a worn one takes almost all the load and will not last
-   Belt 978548 is the other paired listing here at 2 x 1225 mm; check the length before ordering either

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   978740 → Supersedes 966846

### OEM / Related Numbers

-   966846 earlier number superseded by this part

### Other-Brand OEM Numbers

-   Dayco: 17450
-   Gates: 9451
-   Gates: 9451HD
-   Gates: 6476EXL
-   Dayco: 13A1145HD
-   Continental/ContiTech: 13X1145
-   SKF: VKMV 13AVX1145
-   INA: FB 13X1150

### Aftermarket / Verified Equivalents

-   DT Spare Parts: 1.21200
-   Flennor: A5365
-   Optibelt: 13A 1150
-   SNR: AVX13X1150
-   Goodyear/Veyance: 13AV1150HD

## 📦 Condition

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

## Details

- **Price:** 94.12 AUD
- **Vendor:** Volvo Penta
- **Type:** Belts, Pulleys & Tensioners
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 94.12 AUD | In stock |

## Images

- 978740 V-Belt | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/978740-v-belt-genuine-volvo-penta)
> Updated: 2026-09-06