# 21739026 Wiring Harness | Genuine Volvo Penta Part

## 🔧 Product Description

Main electrical harness used across Volvo Penta TAD5 and TAD7 generator engines. It distributes ECU power, sensor signals, actuator feeds and engine-interface circuits through the original sealed connectors.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD560VE
-   Volvo Penta TAD561VE
-   Volvo Penta TAD750GE
-   Volvo Penta TAD751GE
-   Volvo Penta TAD752GE
-   Volvo Penta TAD753GE
-   Volvo Penta TAD754GE
-   Volvo Penta TAD765VE
-   Volvo Penta TAD764VE
-   Volvo Penta TAD763VE
-   Volvo Penta TAD762VE
-   Volvo Penta TAD761VE

-   **Engine Family:** TAD

## ⚙️ Key Features

-   Genuine Volvo Penta electrical harness
-   Factory connector keying and branch lengths
-   Marine/industrial-grade insulation and protective loom
-   Designed for the original ECU and sensor generation
-   Engine serial and connector-layout verification required
-   Engine type: Inline-six turbocharged generator diesel

## 🔌 Function

Carries electrical power, ground, communication and sensor or actuator signals between the connected engine-system components.

## ⚠️ Common Signs of Failure

-   Multiple unrelated sensor fault codes
-   Loss of ECU or control-system communication

## 🛠️ Service Notes

-   Compare the new harness with the old one before fitting — check the connector types, the number of pins and the branch lengths, and lay it out alongside the old loom to confirm every branch reaches its component
-   Disconnect the batteries before unplugging or fitting a harness, and support the loom as you work so its weight never hangs on a connector or a bulkhead grommet
-   Route it along the original path and secure it with the original clips and ties, clear of hot exhaust surfaces, sharp edges and anything that moves; leave a service loop at each connector rather than pulling a branch tight
-   Push every connector home until the lock latches and protect the joints with a marine dielectric grease — an intermittent electrical fault is far more often a partly seated or salt-corroded pin than a broken wire
-   Renewing the harness is the right repair where insulation is chafed, brittle or oil-soaked, or where corrosion has tracked inside the connector bodies; patch repairs in a damp engine bay tend to fail again, and any single conductor that is repaired should be joined with tinned marine cable of the same gauge, a proper crimp and adhesive-lined heat-shrink

## 🔄 Supersession & Cross Reference

### Other-Brand OEM Numbers

-   VOE21739026

## 📦 Condition

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

## Details

- **Price:** 178.99 AUD
- **Vendor:** Volvo Penta
- **Type:** Electrical & Wiring
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 178.99 AUD | In stock |

## Images

- 21739026 Wiring Harness | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21739026-wiring-harness-genuine-volvo-penta)
> Updated: 2026-10-10