# 858410 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta plug from the Cooling System group, weighing 0.002 kg and listed for 4 applications. No thread size or material is published for it, so it is identified by its part number and its fitment.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta 2003TB
-   Volvo Penta 2003TB SOLAS
-   Volvo Penta 2003T
-   Volvo Penta 2003TR

## ⚙️ Key Features

-   0.002 kg
-   4 applications
-   Cooling System group
-   No thread size is published - order by part number

## 🔌 Function

Blanks off its threaded port in the cooling circuit and holds the coolant in.

## ⚠️ Common Signs of Failure

-   Coolant weeping or crusting around the plug
-   Threads corroded, stripped or picked up on removal
-   Sealing face or washer seat damaged
-   Plug head rounded off by a poorly fitting tool

## 🛠️ Service Notes

-   Renew the sealing washer or O-ring rather than reusing it, and do not overtighten into a soft housing

## 📦 Condition

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

## Details

- **Price:** 41.48 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 41.48 AUD | In stock |

## Images

- 858410 Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/858410-plug-genuine-volvo-penta)
> Updated: 2026-10-20