# 21138335 Wiring Harness | Genuine Volvo Penta Part

## 🔧 Product Description

A configuration-specific wiring harness for the d13 electronically controlled marine diesel electrical system. It distributes power, ground and sensor/actuator signals through sealed branches whose length and connector population match the engine dataset and installed options.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D4-260I-A
-   Volvo Penta D4-260I-B
-   Volvo Penta D4-300I-A
-   Volvo Penta D4-210A-A
-   Volvo Penta D4-210A-B
-   Volvo Penta D4-225A-B
-   Volvo Penta D4-210I-A
-   Volvo Penta D4-210I-B
-   Volvo Penta D4-180I-B
-   Volvo Penta D4-225I-B

-   **Engine Family:** D
-   **HP Range:** 180-300 HP

## ⚙️ Key Features

-   Sealed application-specific connectors
-   Branch lengths follow the original engine routing
-   Conductor sizes match circuit load
-   Integrated shielding or twisted pairs where required
-   Harness generation, ECU dataset and engine serial number must match
-   Engine type: D13 electronically controlled marine diesel electrical system

## 🔌 Function

Connects the ECU, sensors, actuators and installation interfaces while protecting low-voltage signals from heat, oil, moisture and vibration.

## ⚠️ Common Signs of Failure

-   Multiple unrelated fault codes appearing together
-   Power or communication dropping out when the loom is moved by hand
-   Heat damage or hardened insulation on a branch near the exhaust
-   Water in a connector, with corroded or discoloured pins
-   Chafed-through conductor shorting to the engine block, found on strip-down

## 🛠️ Service Notes

-   Trace and repair the cause of any chafe before fitting a replacement, or the new harness will fail in the same place
-   Check the supply and ground terminations, as voltage drop there mimics a failed harness

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   20513343 - cam/flywheel speed sensor used by related harnesses
-   21109100 - sensor-kit references used by serial-controlled versions
-   21138559 - sensor-kit references used by serial-controlled versions

## 📦 Condition

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

## Details

- **Price:** 2026.99 AUD
- **Vendor:** Volvo Penta
- **Type:** Electrical & Wiring
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2026.99 AUD | In stock |

## Images

- 21138335 Wiring Harness | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21138335-wiring-harness-genuine-volvo-penta)
> Updated: 2026-09-22