# 859939 Delivery Pipe | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta delivery pipe for cylinder number 4, from the Fuel System group, weighing 0.107 kg and listed for 3 applications on TMD and MD series engines. It is the third of the set that replaced the single older number 859704, alongside 859937 for cylinder 2 and 859938 for cylinder 3. The three are the same weight and differ only in routing, so identify by cylinder number.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TMD22A
-   Volvo Penta MD22A
-   Volvo Penta MD22P

-   **Engine Family:** TMD, MD

## ⚙️ Key Features

-   For cylinder number 4
-   Supersedes 859704, one of three cylinder-specific replacements
-   0.107 kg, the same as 859937 and 859938
-   3 applications on TMD and MD engines

## 🔌 Function

Carries fuel at injection pressure from the pump outlet to the injector on cylinder 4.

## ⚠️ Common Signs of Failure

-   Diesel seeping from a union nut under running pressure
-   One cylinder misfiring or knocking, following the pipe when swapped
-   Chafing where the pipe has been touching another pipe or a casting
-   Cracks forming at the cone or behind the union nut
-   Cone face damaged or picked up on inspection

## 🛠️ Service Notes

-   Never straighten or reshape a delivery pipe to make it reach
-   Renew the separating clamps at the same time so the pipes cannot rub
-   Bleed through and check each union under running pressure before finishing

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   859939 → Supersedes 859704

## 📦 Condition

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

## Details

- **Price:** 265.62 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 265.62 AUD | In stock |

## Images

- 859939 Delivery Pipe | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/859939-delivery-pipe-genuine-volvo-penta)
> Updated: 2026-08-22