# 20585482 Expansion Tank | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta expansion tank from the Cooling System group, weighing 2.028 kg and listed for 5 applications on TAD engines.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD721GE
-   Volvo Penta TAD722GE
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4
-   Volvo Penta TAD734GE

-   **Engine Family:** TAD

## ⚙️ Key Features

-   2.028 kg
-   Listed for 5 applications on TAD engines
-   Cooling System group
-   Handles coolant expansion, deaeration and level checking

## 🔌 Function

Takes up coolant expansion, lets air out of the system and gives the level a place to be checked.

## ⚠️ Common Signs of Failure

-   Coolant leaking from the tank or its seams
-   Cracks or discolouration visible in the tank wall
-   System will not hold pressure
-   Coolant level swinging up and down abnormally
-   Mounting points cracked or broken

## 🛠️ Service Notes

-   Check the pressure cap before condemning the tank - a system that will not hold pressure often fails at the cap

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20585475 - Related Fan Shroud
-   20585484 - Related Coolant Level Sensor
-   20585438 - Related D5/D7 Charge Air Cooler
-   20585486 - Related Cap
-   20585513 - Related Brace
-   20585515 - Related Fan
-   3827336 - Related charge-air-cooler references
-   21922701 - Related charge-air-cooler references
-   20412320 - Related radiator references
-   21266489 - Related radiator references
-   21540808 - Related radiator references
-   20531427 - Expansion-tank references
-   20531428 - Expansion-tank references
-   20845189 - Expansion-tank references
-   20531429 - Related level-sensor references
-   20824642 - Related level-sensor references
-   20405882 - Fan-shroud references
-   20412321 - Fan-shroud references
-   21266511 - Fan-shroud references
-   21266512 - Fan-shroud references
-   20412278 - Related coolant and water pipes
-   20412279 - Related coolant and water pipes
-   20405697 - Related coolant and water pipes
-   20405950 - Earlier intercooler reference

## 📦 Condition

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

## Details

- **Price:** 1413.49 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1413.49 AUD | In stock |

## Images

- 20585482 Expansion Tank | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20585482-expansion-tank-genuine-volvo-penta)
> Updated: 2026-10-10