# 478296 Gear | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta gear marked Nitro, from the Engine group, weighing 0.329 kg and listed for 50 applications across the TD, TAMD, TWD, TID and TAD series.

## 🚤 Compatibility

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

Full model list at the end of this description.

## ⚙️ Key Features

-   Marked Nitro
-   0.329 kg
-   50 applications across five engine series
-   Gears 478429 and 478777 in this range also carry the Nitro marking

## 🔌 Function

Transmits drive through the timing train, keeping the driven shafts in phase with the crankshaft.

## ⚠️ Common Signs of Failure

-   Whine or growl from the timing end that follows engine speed
-   Rattle at idle that quietens under load
-   Bright metal flakes in the oil filter
-   Teeth found pitted, chipped or worn to a step
-   Backlash outside specification when measured at the gear

## 🛠️ Service Notes

-   The Nitro marking is the specification that separates this gear from otherwise similar ones, so quote it when ordering
-   Inspect the mating gears and the shaft or bearing for matching wear and set backlash on assembly

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAMD74P-A, TAMD74P-B, TAMD74A, TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B
-   Volvo Penta TD61A, TD61ACE, TD61AG, TD61AGP, TD61AP, TD61APB, TD61AW
-   Volvo Penta TD71A, TD71ACE, TD71AG, TD71AGP, TD71AP, TD71APB, TD71AW
-   Volvo Penta TID71A, TID71AG, TID71AGP, TID71AP, TID71APB
-   Volvo Penta TAMD63L-A, TAMD63P-A
-   Volvo Penta TAMD73P-A, TAMD73WJ-A
-   Volvo Penta TD610M, TD610V
-   Volvo Penta TD630ME, TD630VE
-   Volvo Penta TD730ME, TD730VE
-   Volvo Penta TID61AG, TID61AGP
-   Volvo Penta TWD630ME, TWD630VE
-   Volvo Penta TAD730V
-   Volvo Penta TAMD75P-A
-   Volvo Penta TD121G-87
-   Volvo Penta TD640VE
-   Volvo Penta TID121K-87
-   Volvo Penta TWD610V
-   Volvo Penta TWD710V
-   Volvo Penta TWD730ME
-   Volvo Penta TWD731VE
-   Volvo Penta TWD740VE

## Details

- **Price:** 1739.42 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1739.42 AUD | In stock |

## Images

- 478296 Gear | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/478296-gear-genuine-volvo-penta)
> Updated: 2026-09-06