# 840781 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta plug from the Cooling System group, weighing 0.003 kg and listed for 10 applications. It is the smallest of the three plugs here, against 840797 at 0.011 kg and 840677 at 0.027 kg.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta 2003
-   Volvo Penta 2003R
-   Volvo Penta 2003TB
-   Volvo Penta 2003D
-   Volvo Penta 2003T
-   Volvo Penta 2003TR
-   Volvo Penta 2002B
-   Volvo Penta 2002D
-   Volvo Penta 2003B
-   Volvo Penta 2002

## ⚙️ Key Features

-   0.003 kg
-   10 published applications
-   Cooling System group

## 🔌 Function

Blanks off a small coolant opening so coolant is contained and directed correctly.

## ⚠️ Common Signs of Failure

-   Coolant weeping at the plug
-   Plug corroded or pitted
-   Drive or thread damaged on removal
-   Crust of deposits around the plug
-   Slow, unexplained coolant loss

## 🛠️ Service Notes

-   Three plugs of different sizes appear in this group, so check the size and position before ordering
-   Renew the sealing washer and clean the seat before fitting

## 📦 Condition

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

## Details

- **Price:** 53.35 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 53.35 AUD | In stock |

## Images

- 840781 Plug | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/840781-plug-genuine-volvo-penta)
> Updated: 2026-10-11