# 3840379 Insert | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta insert from the Cooling System group, weighing 2.461 kg and listed for 5 applications on D series engines. It sits within 23 grams of insert 3840921 at 2.438 kg, so the published weights do not reliably separate the two - order by part number, and note that 3840921 carries 10 applications against this one's 5.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D3-190A-B
-   Volvo Penta D3-190A-C
-   Volvo Penta D3-190I-A
-   Volvo Penta D3-190I-B
-   Volvo Penta D3-190I-C

-   **Engine Family:** D
-   **HP Range:** 190 HP

## ⚙️ Key Features

-   2.461 kg
-   5 applications on D series engines
-   Only 23 grams apart from insert 3840921, so weight is no guide
-   Cooling System group

## 🔌 Function

Forms the internal element of its cooling assembly, directing coolant flow through the housing.

## ⚠️ Common Signs of Failure

-   Running temperature drifting up, particularly at higher load
-   Weeping from the housing joint faces
-   Passages furred with scale or packed with silt
-   Pitting or erosion on the insert surfaces
-   Coolant loss with no obvious external leak

## 🛠️ Service Notes

-   Order by number rather than by weight, as 3840921 is almost identical on the scales
-   Fit new seals and gaskets throughout the housing
-   Flush the cooling system before refitting

## 📦 Condition

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

## Details

- **Price:** 1967.74 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1967.74 AUD | In stock |

## Images

- 3840379 Insert | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3840379-insert-genuine-volvo-penta)
> Updated: 2026-10-10