# 24301681 Idler Gear | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta idler gear from the Engine group, weighing 2.995 kg and listed for 12 D series engine applications. It supersedes part number 20850724.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D13C3-B MH
-   Volvo Penta D13C1-B MH
-   Volvo Penta D13C4-B MH
-   Volvo Penta D13C2-B MP
-   Volvo Penta D13C4-B MP
-   Volvo Penta D13C5-B MP
-   Volvo Penta D13C3-B MG
-   Volvo Penta D13C1-B MG
-   Volvo Penta D13C4-B MG
-   Volvo Penta D13C2-B MG
-   Volvo Penta D13C7-B MP
-   Volvo Penta D13C8-B MP

-   **Engine Family:** D

## ⚙️ Key Features

-   2.995 kg
-   Supersedes 20850724
-   12 D series engine applications

## 🔌 Function

Transfers drive between two gears while reversing or maintaining rotation direction in the train.

## ⚠️ Common Signs of Failure

-   Gear train noise varying with engine speed
-   Worn or scored bearing bore
-   Tooth pitting or chipping
-   Excessive backlash at the idler

## 🛠️ Service Notes

-   Check the idler bearing and its shaft for wear at the same time

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   24301681 → Supersedes 20850724

### OEM / Related Numbers

-   20850724 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 1715.01 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1715.01 AUD | In stock |

## Images

- 24301681 Idler Gear | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/24301681-idler-gear-genuine-volvo-penta)
> Updated: 2026-10-12