# 20556333 Wiring Harness | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta wiring harness from the Ignition and Control Systems group, 5.0 m long, for engines with the EDC IV electrical system: TD520GE and TAD520GE up to serial number 0935273, and TD720GE, TAD720GE, TAD721GE and TAD722GE up to serial number 0935273. It weighs 2.359 kg and is listed for 21 applications across TD and TAD series engines.

## 🚤 Compatibility

-   **Engine Family:** TD, TAD
-   **Serial Range:** TD520GE, TAD520GE:Electrical system EDC IV. SN-0935273, TD720GE, TAD720GE, TAD721GE, TAD722GE:Electrical system EDC IV. SN-0935273, L=5.0m

Full model list at the end of this description.

## ⚙️ Key Features

-   5.0 m long
-   For the EDC IV electrical system
-   TD520GE and TAD520GE up to serial number 0935273
-   TD720GE, TAD720GE, TAD721GE and TAD722GE up to serial number 0935273
-   2.359 kg

## 🔌 Function

Carries electrical power and control signals between the engine components it links.

## ⚠️ Common Signs of Failure

-   Warning lamps or gauges dropping out intermittently with engine vibration
-   Fault codes that clear when a connector is moved by hand
-   Insulation chafed through where the loom crosses a bracket or a hot pipe
-   Green or powdery corrosion inside the connector shells
-   Engine stopping or refusing to crank with nothing wrong at the component itself

## 🛠️ Service Notes

-   Check the connector pins and the earth points before replacing the loom - harness faults commonly sit at the terminations rather than in the middle of a run
-   Confirm the electrical system and the engine serial number before ordering, since this harness covers EDC IV installations up to 0935273 on the designations listed

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20556355 - Related Housing
-   20556381 - Related Plug
-   20556427 - Related Cable Connection
-   20556430 - Related Cable Connection
-   20556858 - Related Hexagon Screw
-   20557208 - Related Gasket

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta TAD520GE, TAD520VE
-   Volvo Penta TAD530GE MECH, TAD530GE EDC4
-   Volvo Penta TAD531GE MECH, TAD531GE EDC4
-   Volvo Penta TAD720GE, TAD720VE
-   Volvo Penta TAD721GE, TAD721VE
-   Volvo Penta TAD722GE, TAD722VE
-   Volvo Penta TAD730GE MECH, TAD730GE EDC4
-   Volvo Penta TAD731GE MECH, TAD731GE EDC4
-   Volvo Penta TAD532GE EDC4
-   Volvo Penta TAD732GE EDC4
-   Volvo Penta TAD733GE EDC4
-   Volvo Penta TD520GE
-   Volvo Penta TD720GE

## Details

- **Price:** 2100.2 AUD
- **Vendor:** Volvo Penta
- **Type:** Electrical & Wiring
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2100.20 AUD | In stock |

## Images

- 20556333 Wiring Harness | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20556333-wiring-harness-genuine-volvo-penta)
> Updated: 2026-10-10