# 20412269 Plug | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta radiator plug used on TD520GE, TAD530GE and TAD531GE cooling packages. It closes the assigned radiator tank opening and must match the radiator version and serial-number break.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TD520GE
-   Volvo Penta TD520VE
-   Volvo Penta TAD520GE
-   Volvo Penta TAD530GE MECH
-   Volvo Penta TAD530GE EDC4
-   Volvo Penta TAD531GE MECH
-   Volvo Penta TAD531GE EDC4

-   **Engine Family:** TD, TAD

## ⚙️ Key Features

-   Single radiator closure plug
-   Confirmed with TD520GE radiator 20405670
-   Also used on TAD530GE / TAD531GE serial-specific radiator packages
-   Designed for pressurised hot coolant
-   Radiator and plug sealing faces must be inspected during service
-   Engine type: Volvo Penta 5-litre industrial diesel

## 🔌 Function

Closes and seals a radiator tank or core opening.

## ⚠️ Common Signs of Failure

-   Coolant seepage
-   Plug corrosion or damaged threads
-   Radiator pressure loss
-   Plug loosening in service

## 🛠️ Service Notes

-   Clean the threads and the seating face before fitting, and make sure the opening itself is clear of old sealant, swarf and corrosion
-   Renew the sealing washer or O-ring where one is fitted rather than reusing a flattened one, and only use thread sealant where the workshop manual for your engine calls for it
-   Tighten to the figure given in the workshop manual for your engine — plugs in aluminium and other soft castings strip easily, and a plug pulled up hard to cure a leak usually distorts the seat and makes it worse
-   Where the plug closes an oil, fuel or coolant passage, run the engine up to temperature afterwards and check the joint under pressure before signing the job off
-   Keep removed plugs paired with the holes they came out of during a strip-down — plugs of very similar appearance often differ in thread, reach or sealing type

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20405670 - TD520GE radiator
-   20412320 - related TAD530GE / TAD531GE radiator references
-   20845189 - expansion tank
-   20412329 - filler cap

## 📦 Condition

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

## Details

- **Price:** 29.52 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 29.52 AUD | In stock |

## Images

- 20412269 Plug | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20412269-plug-genuine-volvo-penta)
> Updated: 2026-10-11