# 3825963 Heat Exchanger Element | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta heat exchanger element for engines from serial number 1101051559 onwards, from the Cooling System group, weighing 32.21 kg and listed for 4 applications across the TMD and TAMD series. It is the replaceable tube stack that goes into the existing exchanger housing. It supersedes part numbers 3825311 and 864844, one of which was catalogued earlier as a heat exchanger element.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TMD100C
-   Volvo Penta TMD102A
-   Volvo Penta TAMD102A
-   Volvo Penta TAMD103A

-   **Engine Family:** TMD, TAMD
-   **Serial Range:** SN1101051559/XXXXXX-

## ⚙️ Key Features

-   For engines from serial number 1101051559 onwards
-   32.21 kg
-   Replaceable tube stack for the existing housing and end covers
-   Supersedes 3825311 and 864844
-   4 applications across TMD and TAMD engines
-   Also supersedes Volvo part number 823278

## 🔌 Function

Carries the tube stack that transfers heat from the engine coolant to the raw water inside the exchanger housing.

## ⚠️ Common Signs of Failure

-   Coolant temperature climbing under load and slow to come back down
-   Traces of coolant in the raw water or salt deposits in the coolant
-   Tube stack furred, silted or blocked at the ends
-   Element corroded, pitted or perforated
-   Zinc anodes consumed far faster than expected

## 🛠️ Service Notes

-   Check the engine serial number, as this element covers the build from 1101051559 onwards
-   At 32.21 kg this needs lifting help and protective packing - the tube stack is easily damaged in transit
-   The housing and end covers are reused where they are still serviceable, so renew all sealing rings and anodes, clean the housing bore, and pressure-test both circuits before returning to service

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   3825963 → Supersedes 3825311 → Supersedes 864838

### OEM / Related Numbers

-   864844 earlier number superseded by this part
-   3825311 earlier number superseded by this part
-   864838 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 13315.78 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 13315.78 AUD | In stock |

## Images

- 3825963 Heat Exchanger Element | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3825963-heat-exchanger-element-genuine-volvo-penta)
> Updated: 2026-10-11