# 20441519 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Thermostat Sealing O-Ring - Part Number: 20441519

  

Genuine Volvo Penta O-ring sealing the thermostat to housing 20405688 in D5 and D7 cooling systems. One O-ring is used with either the 5-litre thermostat 20506125 or 7-litre thermostat 20460312.

  

⚙️ Key Features

  

• Single thermostat sealing O-ring

• Used in housing 20405688

• Compatible with 5-litre and 7-litre thermostat arrangements

• Coolant- and temperature-resistant material

• Renew whenever the thermostat is removed

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20441519 - current Volvo Penta thermostat O-ring reference

  

OEM / Related Numbers:

  

• 20405688 - thermostat housing

• 20506125 - 5-litre thermostat

• 20460312 - 7-litre thermostat

• 20412325 - housing connection O-rings

• 20405517 - housing gasket

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D5 / D7 thermostat housings

  

Typically suits:

  

• Engine / equipment models:

• TD520GE

• TAD530GE

• TAD531GE

• TAD532GE

• TD720GE

• TAD730GE

• TAD731GE

  

• Engine Type: Volvo Penta 5- and 7-litre industrial diesel

• Year / Serial Range: Thermostat and housing version dependent

  

🔌 Function

  

Seals the thermostat in its housing so coolant follows the intended warm-up and circulation path.

  

Common signs of failure:

  

• Coolant leakage at the thermostat housing

• Temperature fluctuation

• Slow coolant loss

• O-ring hardening or cuts

• Bypass leakage around the thermostat

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 17.03 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 17.03 AUD | In stock |

## Images

- 20441519 O-Ring | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20441519-o-ring-genuine-volvo-penta)
> Updated: 2026-07-30