# 3804566 Cylinder Head Core | Genuine Volvo Penta Part

## 🔧 Product Description

Core deposit for a cylinder head, in the Engine group. It is the refundable charge raised against the old cylinder head when the exchange unit is bought, and it comes back once the worn cylinder head is returned. The line itself is an accounting entry rather than a part, so nothing ships against it on its own. Under Volvo Penta's core numbering the exchange unit it belongs to takes part number 3801566, which is the number to quote for the component itself. It is one of 12 cylinder head cores running through this block, and nothing published against them separates one from another, so order the number that matches the cylinder head actually coming off rather than working from the description.

## ⚙️ Key Features

-   Core deposit line, not a cylinder head you can fit
-   Belongs with the exchange unit, part number 3801566
-   Refunded when the old cylinder head is returned
-   Not separable from the other cylinder head cores here, so order by part number
-   Engine group

## 🔌 Function

As a line item it carries the refundable core charge on the exchange; the head itself closes the top of the cylinders and carries the valves, seats and injector bores, sealing combustion while passing coolant and gas through its ports.

## ⚠️ Common Signs of Failure

-   This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the cylinder head being exchanged
-   Coolant disappearing with no leak to be found, and white steam at the exhaust
-   Bubbling or pressure at the header tank, with the engine running hotter than it should
-   Oil turned creamy, or a compression test dropping away on one or two cylinders
-   On strip-down, cracking or erosion between the valve seats, burnt valves and a face found out of flat

## 🛠️ Service Notes

-   The charge is refunded when the worn cylinder head is returned, so keep the old unit and send it back rather than scrapping it
-   Ordering this number on its own supplies no part - it goes on the order beside the exchange unit, part number 3801566
-   Have the old head checked for flatness and cracks before it is condemned, since a skimmable head and a failed gasket give the same symptoms

## 📦 Condition

-   Refundable core deposit - not a physical part

## Details

- **Price:** 4950.0 AUD
- **Vendor:** Volvo Penta
- **Type:** Exchange & Reman Units
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4950.00 AUD | In stock |

## Images

- 3804566 Cylinder Head Core | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3804566-cylinder-head-core-genuine-volvo-penta)
> Updated: 2026-09-06