# 3804458 Engine Core | Genuine Volvo Penta Part

## 🔧 Product Description

Core deposit for a Volvo Penta engine, from the Engine group. It is an accounting line rather than a fittable part: the refundable charge raised against the old engine when a replacement is supplied on exchange, credited back once that worn unit is returned. Ordering it supplies nothing in itself. It is raised against unit 3801458. Core numbers in this series run three thousand above the unit they belong to, so the deposit and the unit are read as a pair. The line is listed at 333.389 kg; nothing ships out against the deposit, so treat that as the scale weight of the engine going back for credit.

## ⚙️ Key Features

-   Refundable core deposit on an engine, not a fittable part
-   Credited back on return of the old engine
-   Pairs with unit 3801458, three thousand below this core number
-   Listed at 333.389 kg, the return weight to plan freight around

## 🔌 Function

Holds the refundable deposit raised against the old engine when a replacement is bought on exchange, and releases it as a credit when that unit is returned. It does no mechanical work. The engine itself turns fuel into shaft power for the drive.

## ⚠️ Common Signs of Failure

-   This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the engine being exchanged
-   Blue smoke and heavy breathing from the crankcase
-   Oil pressure low, worst when hot at idle
-   Knocking, rumbling or ticking from the bottom end or the valve gear
-   Coolant and oil mixing, or combustion pressure pushing into the cooling system

## 🛠️ Service Notes

-   The deposit is refunded when the old engine is sent back, so return it complete and as it came off - the credit depends on the core being fit to rebuild, and a stripped or broken-up unit can lose it
-   Ordering this line on its own supplies no part. It has to go on the order alongside unit 3801458, which is the item that actually ships
-   3804457 and 3804458 are both engine cores listed at 333.389 kg with nothing else to tell them apart - order by part number, not by the scale

## 📦 Condition

-   Refundable core deposit - not a physical part

## Details

- **Price:** 2530.0 AUD
- **Vendor:** Volvo Penta
- **Type:** Exchange & Reman Units
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2530.00 AUD | In stock |

## Images

- 3804458 Engine Core | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3804458-engine-core-genuine-volvo-penta)
> Updated: 2026-10-08