# 20405839 Dust Ejector | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Air Cleaner Dust Ejector Valve - Part Number: 20405839

  

Genuine Volvo Penta rubber dust ejector fitted to the lower cap of air cleaner 20405837 on the TD720GE. The one-way valve automatically releases accumulated dust and moisture from the dirty side of the air-cleaner housing while limiting unfiltered-air entry.

  

⚙️ Key Features

  

• Flexible one-way dust evacuation valve

• Fits air cleaner 20405837 and cap 20405829

• Used with filter insert 3840034 / earlier reference 20405830

• Helps prevent dust accumulation in the air-cleaner housing

• Valve lips must remain flexible and close together when not discharging debris

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20405839 - current Volvo Penta dust-ejector reference

  

OEM / Related Numbers:

  

• 20405837 - air cleaner

• 3840034 - filter insert

• 20405830 - earlier related filter-insert reference

• 20405829 - air-cleaner cap

• 20405833 - mounting bracket

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta TD720GE air-cleaner assemblies

  

Typically suits:

  

• Engine / equipment models:

• TD720GE

  

• Engine Type: Volvo Penta 7-litre turbocharged industrial diesel

• Year / Serial Range: Stage 1 / Tier 1 air-cleaner arrangement dependent

  

🔌 Function

  

Purges dust and moisture from the dirty side of the air cleaner without requiring the housing to be opened.

  

Common signs of failure:

  

• Dust building up inside the air-cleaner cap

• Valve lips hardened, split or permanently open

• Unfiltered air entering through the ejector

• Water remaining trapped in the housing

• Air-filter restriction increasing prematurely

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 114.86 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 114.86 AUD | In stock |

## Images

- 20405839 Dust Ejector | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405839-dust-ejector-genuine-volvo-penta)
> Updated: 2026-07-30