# 8149353 Pressure Cap | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta 100 kPa pressure cap for engines from serial number 1009196793 onwards, to be used with expansion tank 23360152. It weighs 0.045 kg, is listed for 12 applications across D and MD series engines and supersedes part number 21661754, which was catalogued earlier simply as a cap.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta D9A2J
-   Volvo Penta D7A-B TA
-   Volvo Penta D7A-T
-   Volvo Penta D7A-TA
-   Volvo Penta D7C-B TA
-   Volvo Penta D7C-TA
-   Volvo Penta D9A2A
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, MD
-   **Serial Range:** SN1009196793-, 100 Kpa, Use to Expansion tank 23360152

## ⚙️ Key Features

-   Rated 100 kPa
-   For engines from serial number 1009196793 onwards
-   For use with expansion tank 23360152
-   0.045 kg
-   Supersedes 21661754

## 🔌 Function

Holds the cooling system at its designed 100 kPa working pressure, raising the coolant's boiling point, and vents to the overflow above that pressure.

## ⚠️ Common Signs of Failure

-   Coolant pushed into the overflow whenever the engine gets hot
-   Boiling or steaming at temperatures the gauge says should be safe
-   Perished, swollen or torn sealing rubber on the cap
-   Weak or seized spring so the cap no longer holds pressure
-   Hose collapse on cooling down because the vacuum valve has stuck shut

## 🛠️ Service Notes

-   Only ever remove a pressure cap on a cold system; hot coolant under pressure comes out at you
-   Fit the cap specified for your engine — its pressure rating is part of the cooling system design, and a cap that vents at the wrong pressure causes overheating or collapsed hoses
-   Check the seat in the filler neck is clean and undamaged first, as a good cap cannot seal against a corroded or distorted seat
-   Fit the cap right home to its stop so both the pressure valve and the vacuum valve can work as intended
-   When hoses collapse or the level in the expansion tank swings and never returns, suspect the cap's vacuum valve before chasing bigger faults

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   8149353 → Supersedes 21661754

### OEM / Related Numbers

-   21661754 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 73.24 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 73.24 AUD | In stock |

## Images

- 8149353 Pressure Cap | Genuine Volvo Penta Part
- 8149353 Pressure Cap | Genuine Volvo Penta Part - photo 2 of 2

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8149353-pressure-cap-genuine-volvo-penta)
> Updated: 2026-10-11