# 3812439 Leak-Off Pipe | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta leak-off pipe from the Fuel System group, weighing 0.102 kg and listed for 3 applications on D series engines. Leak-off pipe 3812452 is the lighter alternative at 0.048 kg, listed for engines up to serial number 5102178578C.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D2-40
-   Volvo Penta D2-40B
-   Volvo Penta D2-40F

-   **Engine Family:** D
-   **HP Range:** 40 HP

## ⚙️ Key Features

-   0.102 kg
-   3 applications on D series engines
-   Alternative leak-off pipe 3812452 covers engines up to serial number 5102178578C

## 🔌 Function

Collects the small amount of fuel that leaks past each injector and returns it, so it cannot build pressure or find its way into the oil.

## ⚠️ Common Signs of Failure

-   Diesel smell in the engine bay, with wet unions
-   Air drawn into the fuel system, giving hard starting
-   Pipe hardened, cracked or split at the connections
-   Sealing washers flattened and weeping
-   Fuel level rising in the sump from a leaking return

## 🛠️ Service Notes

-   Renew the sealing washers at every leak-off connection, as they are single-use
-   Check whether the engine falls before serial number 5102178578C, since pipe 3812452 covers the earlier build
-   Never plug or bypass a leak-off line

## 📦 Condition

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

## Details

- **Price:** 719.99 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 719.99 AUD | In stock |

## Images

- 3812439 Leak-Off Pipe | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3812439-leak-off-pipe-genuine-volvo-penta)
> Updated: 2026-08-22