# 3804977 Coolant Pump Core | Genuine Volvo Penta Part

## 🔧 Product Description

Core deposit for a coolant pump, in the Cooling System group. It is the refundable charge raised against the old coolant pump when the exchange unit is bought, and it comes back once the worn coolant pump 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 3801977, which is the number to quote for the component itself. The other coolant pump cores in this block are 3804964, 3804975 and 3804976, and nothing published against them separates one from another, so order the number that matches the coolant pump actually coming off.

## ⚙️ Key Features

-   Core deposit line, not a coolant pump you can fit
-   Belongs with the exchange unit, part number 3801977
-   Refunded when the old coolant pump is returned
-   Not separable from the other coolant pump cores here, so order by part number
-   Cooling System group

## 🔌 Function

As a line item it carries the refundable core charge on the exchange; the coolant pump itself circulates coolant through the engine and its coolers, carrying the combustion heat away to be dumped overboard.

## ⚠️ Common Signs of Failure

-   This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the coolant pump being exchanged
-   Coolant temperature climbing under load, with alarms at the helm
-   Coolant dripping from the pump's weep hole, or staining beneath the pump body
-   Rumbling, grinding or squealing from the pump that follows engine speed
-   Play or roughness felt at the pulley, or a belt that keeps wearing on one side

## 🛠️ Service Notes

-   The charge is refunded when the worn coolant pump 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 3801977
-   Renew the coolant and the pump gasket on fitting, and check the belt and its tension, since a fluid that has lost its inhibitor or an over-tightened belt will finish the replacement too

## 📦 Condition

-   Refundable core deposit - not a physical part

## Details

- **Price:** 330.0 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 330.00 AUD | In stock |

## Images

- 3804977 Coolant Pump Core | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3804977-coolant-pump-core-genuine-volvo-penta)
> Updated: 2026-08-22