# 22820752 Thermostat | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta thermostat rated at 86 degrees, weighing 0.404 kg and listed for five D series engine applications. The opening temperature is the critical specification - fitting a different rating changes the engine's running temperature. It supersedes part number 21412643.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D16C-A MG
-   Volvo Penta D16C-A MH
-   Volvo Penta D16C-B MH
-   Volvo Penta D16C-C MH
-   Volvo Penta D16C-D MH

-   **Engine Family:** D

## ⚙️ Key Features

-   Thermostat rated at 86 degrees
-   0.404 kg
-   Supersedes part number 21412643
-   Listed for five D series engine applications
-   Within 14 grams of thermostat 22820756, so the rating and not the weight identifies it

## 🔌 Function

Blocks flow to the heat exchanger until the coolant reaches its rated temperature, then opens progressively so the engine warms quickly and then holds a steady running temperature.

## ⚠️ Common Signs of Failure

-   Engine slow to warm up, or running below normal temperature on a cold day
-   Overheating soon after start-up with the upper hose staying cold, showing a stuck-shut unit
-   Temperature swinging up and down instead of settling
-   Corroded or scaled valve and seat, so the unit no longer closes fully
-   Wax capsule leaking or the return spring collapsed on strip-down

## 🛠️ Service Notes

-   Fit a thermostat of the correct rating only, since a different opening temperature changes how the whole engine runs
-   Renew the housing gasket or sealing ring and check the housing face for erosion at the same time
-   Test the old unit in hot water before condemning it if the symptom is intermittent

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   22820752 → Supersedes 21412643 → Supersedes 21237216 → Supersedes 20560252 → Supersedes 20441484

### OEM / Related Numbers

-   21412643 earlier number superseded by this part
-   21237216 earlier number superseded by this part
-   20560252 earlier number superseded by this part
-   20441484 earlier number superseded by this part

### Other-Brand OEM Numbers

-   Gates: TH62486

### Aftermarket / Verified Equivalents

-   Calorstat by Vernet: THS18201.86
-   Calorstat by Vernet: THCT18201.86
-   DT Spare Parts: 2.15641
-   Febi Bilstein: 44162
-   NRF: 725394

## 📦 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

- 22820752 Thermostat | Genuine Volvo Penta Part
- 22820752 Thermostat | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/22820752-thermostat-genuine-volvo-penta)
> Updated: 2026-10-12