# 3887989 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta plug from the Cooling System group, weighing 0.034 kg and listed for 7 applications across the D series engines.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D12D-A MG
-   Volvo Penta D12D-A MH
-   Volvo Penta D12D-B MH
-   Volvo Penta D12D-C MH
-   Volvo Penta D12D-E MG
-   Volvo Penta D12D-E MH
-   Volvo Penta D12D-G MH

-   **Engine Family:** D

## ⚙️ Key Features

-   0.034 kg
-   7 D series applications
-   Cooling System group

## 🔌 Function

Closes off a machined port or passage in the cooling circuit, sealing it against coolant pressure.

## ⚠️ Common Signs of Failure

-   Coolant weeping or crusting around the plug
-   Thread or hexagon corroded and difficult to grip
-   Plug loose in its port
-   Sealing washer flattened or missing
-   Coolant loss with no other visible source

## 🛠️ Service Notes

-   Fit a new sealing washer where one is used and clean the port thread rather than relying on extra tightening to stop a weep

## 📦 Condition

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

## Details

- **Price:** 105.09 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 105.09 AUD | In stock |

## Images

- 3887989 Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3887989-plug-genuine-volvo-penta)
> Updated: 2026-09-18