# 3979104 Oil Line | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta oil line from the Lubricating and Oil System group, weighing 0.134 kg and listed for 3 applications on the THD series. Oil line 3979103 is the DH listing and is only 4 grams lighter, so the engine family is the reliable guide rather than the weight.

## 🚤 Compatibility

Typically suits:

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

-   **Engine Family:** THD

## ⚙️ Key Features

-   0.134 kg
-   3 applications on the THD series
-   Lubricating and Oil System group
-   Only 4 grams from the DH oil line 3979103

## 🔌 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 clip
-   Pressure lower than expected at the far end

## 🛠️ Service Notes

-   3979103 is the near-identical DH listing — order by part number, not by weight
-   Renew the sealing washers and check the line is clipped so the unions carry no load

## 📦 Condition

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

## Details

- **Price:** 172.9 AUD
- **Vendor:** Volvo Penta
- **Type:** Hoses & Pipes
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 172.90 AUD | In stock |

## Images

- 3979104 Oil Line | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3979104-oil-line-genuine-volvo-penta)
> Updated: 2026-10-11