# 3842365 Stay | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta stay from the Alternator, Charging, Electric Motor and Electric Drives group, weighing 0.700 kg and listed for 1 application on TWD series engines. It supersedes part number 3839109, which was catalogued earlier as a bracket.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TWD1240VE

-   **Engine Family:** TWD

## ⚙️ Key Features

-   Alternator and charging group
-   0.700 kg
-   1 application on TWD series engines
-   Supersedes 3839109, formerly catalogued as a bracket

## 🔌 Function

Braces the alternator against belt tension and engine vibration, holding it square to the drive.

## ⚠️ Common Signs of Failure

-   Belt squeal or a belt that keeps throwing off
-   Alternator visibly rocking or out of line with the pulleys
-   Cracks at the mounting holes or a bent stay
-   Bolt holes worn oval and fixings loose
-   Charging output dropping as belt tension is lost

## 🛠️ Service Notes

-   The old number was listed as a bracket, so a bracket in your records may well be this stay
-   Check the belt, pulley alignment and the alternator mounting bosses when fitting
-   Retension the belt after the first period of running

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3842365 → Supersedes 3839109

### OEM / Related Numbers

-   3839109 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 183.01 AUD
- **Vendor:** Volvo Penta
- **Type:** Brackets & Mounts
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 183.01 AUD | In stock |

## Images

- 3842365 Stay | Genuine Volvo Penta Part
- 3842365 Stay | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3842365-stay-genuine-volvo-penta)
> Updated: 2026-09-06