# 20405938 Hose Connection | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Crankcase Breather Hose Connection - Part Number: 20405938

  

Genuine Volvo Penta hose connection used between the oil separator and breather hose on low-mounted turbo TAD730GE and TAD731GE engines without the optional air filter. It provides the sealed transition from the separator housing to hose 20405629.

  

⚙️ Key Features

  

• Crankcase-ventilation hose adapter

• Used with oil separator 20412322

• Seals with gasket 20405943

• Connects to breather hose 20405629 and pipe 20460391

• Requires the specified hose clamps 20405755

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20405938 - current Volvo Penta breather connection reference

  

OEM / Related Numbers:

  

• 20412322 - oil separator

• 20405943 - separator gasket

• 20405629 - breather hose

• 20460391 - breather pipe

• 20405755 - hose clamps

• 20450728 - flange screw

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta TAD7 crankcase ventilation systems without air filter

  

Typically suits:

  

• Engine / equipment models:

• TAD730GE

• TAD731GE

  

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

• Year / Serial Range: Low-mounted turbo, front exhaust outlet and no-air-filter configuration dependent

  

🔌 Function

  

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

  

Common signs of failure:

  

• Oil mist or leakage around the connection

• Crankcase fumes escaping

• Hose connection cracked or loose

• Seal or gasket failure

• Increased crankcase pressure from a restricted connection

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 117.13 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 117.13 AUD | In stock |

## Images

- 20405938 Hose Connection | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405938-hose-connection-genuine-volvo-penta)
> Updated: 2026-07-30