# 20460312 Thermostat | Genuine Volvo Penta Part

## 🔧 Product Description

Temperature-controlled thermostat that regulates coolant flow between the engine bypass and radiator circuit on TAD720-series engines.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD720GE
-   Volvo Penta TAD720VE
-   Volvo Penta TAD721GE
-   Volvo Penta TAD721VE
-   Volvo Penta TAD722GE
-   Volvo Penta TAD722VE
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4
-   Volvo Penta TAD750GE
-   Volvo Penta TAD751GE
-   Volvo Penta TAD750VE
-   Volvo Penta TAD520GE
-   Volvo Penta TAD520VE
-   Volvo Penta TAD760VE

-   **Engine Family:** TAD
-   **HP Range:** Approximately 237-280 HP
-   **Year Range:** Approximately 1998 - 2006

## ⚙️ Key Features

-   Genuine Volvo Penta engine coolant thermostat
-   Designed for the engine cooling thermostat housing
-   Direct service replacement for Volvo Penta part number 20460312
-   Temperature-controlled thermostat that regulates coolant flow between the engine bypass and radiator circuit on TAD720-series engines
-   Engine type: 7.2-litre six-cylinder turbocharged industrial diesel

## 🔌 Function

Regulates coolant flow between the warm-up bypass and radiator circuit to maintain stable engine operating temperature.

## ⚠️ Common Signs of Failure

-   Engine overheats because the thermostat remains closed or opens late
-   Engine runs too cool or warms slowly because the thermostat remains open
-   Temperature fluctuates under changing load
-   Cabin-heater or cooling performance changes unexpectedly
-   Thermostat fails the specified opening-temperature and lift test

## 🛠️ Service Notes

-   Renew the thermostat seal and clean the housing sealing surfaces
-   Bleed the cooling system and confirm stable operating temperature after installation
-   Renew the sealing ring, confirm the thermostat opening temperature, and bleed the cooling system fully after installation

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20459961 - thermostat sealing ring
-   20460953 - application thermostat housings
-   20450732 - application thermostat housings
-   21955857 - application thermostat housings
-   20460314 - alternate housing reference

### Other-Brand OEM Numbers

-   VOE20460312 - Volvo Construction Equipment prefixed number format

### Aftermarket / Verified Equivalents

-   Olsson Parts 47046 - 87°C branded thermostat reference

## 📦 Condition

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

## Details

- **Price:** 162.09 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 162.09 AUD | In stock |

## Images

- 20460312 Thermostat | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20460312-thermostat-genuine-volvo-penta)
> Updated: 2026-10-10