# 838133 Thermostat Housing | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta thermostat housing from the Cooling System group, weighing 0.272 kg and listed for 2 applications on the MD series.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD5A
-   Volvo Penta MD5B

-   **Engine Family:** MD

## ⚙️ Key Features

-   0.272 kg
-   2 applications on the MD series

## 🔌 Function

Houses the thermostat in the coolant flow and provides the outlet connection and sealing faces for the circuit.

## ⚠️ Common Signs of Failure

-   Coolant weeping from the housing joint or outlet
-   Corrosion pitting or scaling inside the housing
-   Sealing face pitted so a new gasket will not hold
-   Overheating or slow warm-up traced to the housing area
-   Fixing thread pulled or corroded in the casting

## 🛠️ Service Notes

-   Renew the thermostat, gasket and seal when the housing is changed, as it is a poor use of the strip-down to refit old items
-   Check the housing face for flatness on a straight edge before it goes back on

## 📦 Condition

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

## Details

- **Price:** 843.22 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 843.22 AUD | In stock |

## Images

- 838133 Thermostat Housing | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/838133-thermostat-housing-genuine-volvo-penta)
> Updated: 2026-08-22