# 20405625 Conduit Coupling | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Crankcase Ventilation Conduit Coupling - Part Number: 20405625

  

Genuine Volvo Penta conduit coupling connecting the oil separator to the breather hose in D5 crankcase-ventilation systems. It is used with oil separator 20405626 and hose 20405629.

  

⚙️ Key Features

  

• Crankcase-breather hose coupling

• Used between oil separator 20405626 and hose 20405629

• Confirmed on filtered and unfiltered D5 ventilation arrangements

• Maintains a sealed vapour and oil-mist path

• Requires the original hose fit and support bracket

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20405625 - current Volvo Penta conduit-coupling reference

  

OEM / Related Numbers:

  

• 20405626 - oil separator

• 20405627 - oil-separator gasket

• 20405629 - breather hose

• 20450726 / 20459260 - related support brackets

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D5 crankcase-ventilation systems

  

Typically suits:

  

• Engine / equipment models:

• TD520GE

• TAD530GE

• TAD531GE

• TAD532GE

  

• Engine Type: Volvo Penta 5-litre industrial diesel

• Year / Serial Range: Air-filter and breather-layout dependent

  

🔌 Function

  

Joins the oil separator to the breather hose while containing crankcase vapour and oil mist.

  

Common signs of failure:

  

• Oil mist around the coupling

• Loose or cracked connection

• Crankcase fumes escaping

• Hose repeatedly working loose

• Restricted breather flow

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 26.53 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 26.53 AUD | In stock |

## Images

- 20405625 Conduit Coupling | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405625-conduit-coupling-genuine-volvo-penta)
> Updated: 2026-07-30