# 8192578 Idler Gear | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta idler gear from the Engine group, weighing 2.055 kg and listed for 31 applications across the TWD, TID, TAMD, TD and TAD series engines. Volvo Penta lists this part for engines from engine serial number 82972 onward.

## 🚤 Compatibility

-   **Engine Family:** TWD, TID, TAMD, TD, TAD
-   **Serial Range:** SNXXXXXXXXXX/82972-

Full model list at the end of this description.

## ⚙️ Key Features

-   2.055 kg
-   31 applications across five engine series
-   Engine timing gear train
-   Fitted from engine serial number 82972 onward

## 🔌 Function

Carries drive between the timing gears, keeping the camshaft and injection pump in step with the crankshaft.

## ⚠️ Common Signs of Failure

-   Whine or rattle from the timing gear end of the engine
-   Excess backlash felt at the gear when barring the engine over
-   Teeth pitted, chipped or worn to a step
-   Bore worn so the gear rocks on its spindle
-   Injection timing drifting away from specification

## 🛠️ Service Notes

-   Idler gear 8192518 is the other gear of this type here at 2.039 kg - only 16 grams separate them, so order by part number
-   Inspect the idler spindle and bearing surface and renew them together if either is worn

## 🔄 Supersession & Cross Reference

### Aftermarket / Verified Equivalents

-   SRP: IG-92578

## 📦 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 TWD710G, TWD710P, TWD710PB, TWD710V
-   Volvo Penta TAD730G, TAD730P, TAD730V
-   Volvo Penta TAMD72P-A, TAMD72WJ-A
-   Volvo Penta TAMD73P-A, TAMD73WJ-A
-   Volvo Penta TD730ME, TD730VE
-   Volvo Penta TWD740GE, TWD740VE
-   Volvo Penta TAD740GE
-   Volvo Penta TAD741GE
-   Volvo Penta TAMD71B
-   Volvo Penta TAMD75P-A
-   Volvo Penta TD71A
-   Volvo Penta TD710G
-   Volvo Penta TID71A
-   Volvo Penta TWD730ME
-   Volvo Penta TWD731VE

## Details

- **Price:** 1209.57 AUD
- **Vendor:** Volvo Penta
- **Type:** Power Transmission
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1209.57 AUD | In stock |

## Images

- 8192578 Idler Gear | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8192578-idler-gear-genuine-volvo-penta)
> Updated: 2026-09-19