# 22820756 Thermostat | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta thermostat weighing 0.390 kg, superseding part number 21412642 and covering its four TWD series applications. It is within 14 grams of the 86-degree thermostat 22820752, so weight cannot separate them - check the rating.

## ⚙️ Key Features

-   Thermostat from the Cooling System group
-   0.390 kg
-   Supersedes part number 21412642
-   Covers the four TWD series applications listed against the superseded number
-   Within 14 grams of the 86 degree thermostat 22820752, so weight cannot separate the two

## 🔌 Function

Regulates coolant flow to the heat exchanger, staying shut until the engine reaches operating temperature and then metering flow to hold that temperature under changing load.

## ⚠️ Common Signs of Failure

-   Long warm-up and a gauge that never reaches its normal mark
-   Rapid overheating with the outlet hose still cold, indicating the valve has jammed shut
-   Temperature hunting up and down under steady throttle
-   Valve face and seat scaled or pitted so the unit leaks past when closed
-   Capsule or spring found collapsed when the housing is opened

## 🛠️ Service Notes

-   Confirm the rating stamped on the unit you are replacing, since thermostats of the same size differ only by opening temperature
-   Renew the gasket or sealing ring and inspect the housing sealing face before refitting

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   22820756 → Supersedes 21412642 → Supersedes 21237215

### OEM / Related Numbers

-   21412642 earlier number superseded by this part

### Other-Brand OEM Numbers

-   Mahle: THD 3 76

### Aftermarket / Verified Equivalents

-   Calorstat by Vernet: THS18201.76
-   Calorstat by Vernet: THCT18201.76
-   DT Spare Parts: 2.15640
-   Febi Bilstein: 40673
-   NRF: 725438
-   Auger: 91254
-   Sampa: 036.056

## 📦 Condition

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

## Details

- **Price:** 210.72 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 210.72 AUD | In stock |

## Images

- 22820756 Thermostat | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/22820756-thermostat-genuine-volvo-penta)
> Updated: 2026-10-10