# 3838338 Pressure Cap | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta pressure cap rated at 1 bar, from the Cooling System group. It weighs 64 grams and is listed for 10 applications across the D and MD engine series.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta D7A-B TA
-   Volvo Penta D7A-T
-   Volvo Penta D7A-TA
-   Volvo Penta D7C-B TA
-   Volvo Penta D7C-TA
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, MD

## ⚙️ Key Features

-   Rated at 1 bar
-   64 grams
-   10 applications across D and MD series
-   Cooling System group

## 🔌 Function

Seals the coolant header and holds the system at its designed pressure, raising the coolant's boiling point, then releases above the set pressure to protect the circuit.

## ⚠️ Common Signs of Failure

-   Coolant pushed out into the expansion tank or overflow when hot
-   Coolant boiling or surging at temperatures it used to hold
-   Rubber sealing washer hardened, cracked or deformed
-   Weeping or steaming from the filler neck
-   Hoses collapsing as the engine cools, showing the vacuum valve has stuck

## 🛠️ Service Notes

-   Fit the correct 1 bar rating — a cap of a different pressure will either vent early or overpressure the circuit
-   Never open the cap while the engine is hot; release it only once the system has cooled
-   Check the filler neck seat and cam surfaces for corrosion when fitting a new cap

## 📦 Condition

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

## Details

- **Price:** 234.77 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 234.77 AUD | In stock |

## Images

- 3838338 Pressure Cap | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3838338-pressure-cap-genuine-volvo-penta)
> Updated: 2026-10-09