# 22850980 Heat Exchanger | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta shell-and-tube heat exchanger from the Cooling System group, weighing 5.162 kg and listed for three D series engine applications. It is within 5 grams of exchanger 22850982, so weight cannot separate them. It supersedes part number 21847335.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D1-20
-   Volvo Penta D1-20B
-   Volvo Penta D1-20F

-   **Engine Family:** D
-   **HP Range:** 20 HP

## ⚙️ Key Features

-   Heat exchanger from the Cooling System group
-   Shell-and-tube construction
-   5.162 kg
-   Listed for three D series engine applications
-   Within 5 grams of exchanger 22850982, so weight cannot separate them
-   Supersedes part number 21847335

## 🔌 Function

Transfers heat from the engine coolant into the raw water passing through it, holding the engine at its working temperature while keeping the two circuits separate.

## ⚠️ Common Signs of Failure

-   Temperature climbing under load and slow to come back down
-   Coolant level dropping with no visible external leak
-   Salt crust or weeping at the end cap joints
-   Raw water side found packed with scale, weed or impeller debris
-   Tubes perforated, letting sea water into the coolant side

## 🛠️ Service Notes

-   22850982 is within 5 grams of this and covers the same three engines - check parts list for your engine and order by number, not by weight
-   Inspect the impeller and strainer whenever the stack is found blocked, and account for any missing impeller vanes
-   Fit new end cap seals and O-rings when it goes back together

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   22850980 → Supersedes 21847335 → Supersedes 3840128

### OEM / Related Numbers

-   21847335 earlier number superseded by this part
-   3840128 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 2868.81 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2868.81 AUD | In stock |

## Images

- 22850980 Heat Exchanger | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/22850980-heat-exchanger-genuine-volvo-penta)
> Updated: 2026-10-11