21138337 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 D4-260A-B
• Volvo Penta D4-260A-A
• Volvo Penta D4-260D-B
• Volvo Penta D4-300A-A
• Volvo Penta D4-300D-A

• Engine Family: D
• HP Range: 260-300 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

• Intermittent loss of engine communication or instrument data
• Faults that change when the harness is flexed or the engine rocks
• Split or abraded outer sheath at a support point
• Connector seals perished, letting moisture into the pins
• Broken screen or conductor found inside the loom on strip-down

🛠️ Service Notes

• Harness 21138335 is the alternative branch layout, so confirm the routing and connector count against the engine before ordering
• Renew the cable clips and sleeving with the 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