# 3840854 Valve Cover | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta valve cover from the Engine group, weighing 1.091 kg and listed for 3 applications on D series engines. The other valve cover here, 3840858, weighs 1.358 kg and is specified for D2-40A and D2-40B engines, so check your engine designation before choosing between them.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D1-30
-   Volvo Penta D1-30B
-   Volvo Penta D1-30F

-   **Engine Family:** D
-   **HP Range:** 30 HP

## ⚙️ Key Features

-   1.091 kg
-   3 applications on D series engines
-   Engine group
-   Lighter than the D2-40A and D2-40B cover 3840858

## 🔌 Function

Encloses the valve gear and seals the top of the cylinder head against oil loss.

## ⚠️ Common Signs of Failure

-   Oil weeping down the side of the head from the cover joint
-   Oil smell or smoke where oil has reached the hot exhaust
-   Cover gasket flattened, hardened or displaced
-   Cover cracked, or its sealing flange distorted
-   Breather passages fouled with oil sludge

## 🛠️ Service Notes

-   Fit a new gasket and tighten evenly to specification - overtightening distorts the flange and causes fresh leaks
-   Clean the breather passages while the cover is off
-   If your engine is a D2-40A or D2-40B, 3840858 is the cover listed against it

## 📦 Condition

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

## Details

- **Price:** 619.26 AUD
- **Vendor:** Volvo Penta
- **Type:** Engine Components
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 619.26 AUD | In stock |

## Images

- 3840854 Valve Cover | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3840854-valve-cover-genuine-volvo-penta)
> Updated: 2026-09-06