# 21921055 Heat Exchanger | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta heavy-duty engine heat exchanger, part number 21921055. It is a shell-and-tube unit that transfers engine heat from the closed coolant circuit into the raw-water circuit while keeping the two fluids separated.

## ⚙️ Key Features

-   Genuine Volvo Penta heat-transfer assembly
-   Shell-and-tube coolant-to-raw-water construction
-   28.94 kg
-   Factory coolant and raw-water connection geometry
-   Designed for continuous marine-engine load
-   Maintains separation between the cooling circuits
-   Engine type: Volvo Penta marine or industrial engine system

## 🔌 Function

Transfers heat from the closed engine-coolant circuit into the raw-water circuit without allowing the two to mix.

## ⚠️ Common Signs of Failure

-   Rising coolant temperature at sustained load
-   Coolant or raw-water leakage at the end covers
-   Internal restriction from scale, debris or marine growth
-   Coolant or salt contamination across the circuits
-   Reduced heat transfer despite normal pump operation

## 🛠️ Service Notes

-   Renew the end-cover seals and check the anode arrangement whenever the exchanger is opened

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   21920976 - related mounting bracket where specified

## 📦 Condition

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

## Details

- **Price:** 16365.84 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 16365.84 AUD | In stock |

## Images

- 21921055 Heat Exchanger | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21921055-heat-exchanger-genuine-volvo-penta)
> Updated: 2026-10-12