# 3979101 Oil Line | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta oil line weighing 0.234 kg and listed for 4 applications across the THD and DH series. Although it is named as an oil line, it is grouped under the Fuel System, so check which circuit your breakdown shows it on. It is the heaviest of the four oil lines here, ahead of 3979183 at 0.214 kg, 3979104 at 0.134 kg and 3979103 at 0.130 kg.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta THD102KB
-   Volvo Penta THD102KD
-   Volvo Penta THD102K-KB
-   Volvo Penta DH10A

-   **Engine Family:** THD, DH

## ⚙️ Key Features

-   0.234 kg
-   4 applications across the THD and DH series
-   Named an oil line but grouped under the Fuel System
-   Heaviest of the four oil lines in this range

## 🔌 Function

Carries oil under pressure between two fixed points on the engine along a set route.

## ⚠️ Common Signs of Failure

-   Oil misting or running along the line
-   Weeping at a union or a cracked flare
-   Line chafed or rubbed thin at a bracket or clip
-   Pressure lower than expected at the far end
-   Line found strained or pulled out of shape

## 🛠️ Service Notes

-   Order by part number — the four oil lines in this range differ mainly by engine family and are close in weight
-   Support the line at its clips so the unions are not carrying the weight, and check for leaks at working temperature

## 📦 Condition

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

## Details

- **Price:** 187.88 AUD
- **Vendor:** Volvo Penta
- **Type:** Hoses & Pipes
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 187.88 AUD | In stock |

## Images

- 3979101 Oil Line | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3979101-oil-line-genuine-volvo-penta)
> Updated: 2026-10-07