# 865360 Leak-Off Line | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta leak-off line from the Fuel System group, weighing 0.544 kg and listed for 9 applications across TWD and TAD series engines. It supersedes 862566.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TWD1620G
-   Volvo Penta TWD1630G
-   Volvo Penta TWD1630P
-   Volvo Penta TWD1630V
-   Volvo Penta TAD1630G
-   Volvo Penta TAD1630GE
-   Volvo Penta TAD1630P
-   Volvo Penta TAD1631GE
-   Volvo Penta TAD1631G

-   **Engine Family:** TWD, TAD

## ⚙️ Key Features

-   0.544 kg
-   9 applications across TWD and TAD series engines
-   Supersedes 862566

## 🔌 Function

Returns surplus fuel that leaks past the injector needles back to the fuel system.

## ⚠️ Common Signs of Failure

-   Diesel weeping from the injector leak-off connections
-   Smell of fuel around the cylinder head
-   Rough running or hard starting from air drawn into the return
-   Line perished, split or chafed through
-   Connector seals hardened and no longer sealing

## 🛠️ Service Notes

-   Renew the sealing washers at every leak-off connection — they are a common source of a persistent fuel smell
-   Check the injectors themselves if the leak-off return is unusually heavy

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   865360 → Supersedes 862566

### OEM / Related Numbers

-   862566 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 286.01 AUD
- **Vendor:** Volvo Penta
- **Type:** Hoses & Pipes
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 286.01 AUD | In stock |

## Images

- 865360 Leak-Off Line | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/865360-leak-off-line-genuine-volvo-penta)
> Updated: 2026-09-19