# 858525 Coolant Pipe | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta coolant pipe on the sea water pump to shield run, weighing 0.69 kg and listed for 2 applications in the AD series. Pipe 858544 covers the same run at 0.925 kg for 3 applications across AD and D - the routing description does not separate them, so go by the engine series and the part number.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta AD31
-   Volvo Penta AD31B

-   **Engine Family:** AD

## ⚙️ Key Features

-   Sea water pump to shield run
-   0.69 kg
-   2 applications in the AD series
-   Pipe 858544 covers the same run on AD and D engines

## 🔌 Function

Carries raw water between the sea water pump and the shield as part of the cooling circuit.

## ⚠️ Common Signs of Failure

-   Raw water weeping or dripping at either end fitting
-   Salt crusting along the pipe run
-   Pipe corroded thin, pitted or perforated
-   Sealing face or flare damaged so the union will not seal
-   Pipe chafed where it passes a bracket

## 🛠️ Service Notes

-   Confirm the engine series - 858544 covers the same run on other applications
-   Renew the union seals at both ends and refit the clips and standoffs

## 📦 Condition

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

## Details

- **Price:** 658.81 AUD
- **Vendor:** Volvo Penta
- **Type:** Hoses & Pipes
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 658.81 AUD | In stock |

## Images

- 858525 Coolant Pipe | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/858525-coolant-pipe-genuine-volvo-penta)
> Updated: 2026-10-10