3886310 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta wiring harness from the Cables and Fuses group, weighing 2.268 kg and listed for 5 applications across the D series. It supersedes part number 3840337. It is one of four D-series harnesses here that each replace a 38403xx number, with 3883799 replacing 3840339, 3883808 replacing 3840343 and 3887714 replacing 3840341, and all four fall between 2.191 kg and 2.563 kg, so the superseded number identifies yours.

🚤 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

• 2.268 kg
• Supersedes 3840337
• 5 applications across the D series
• One of four D-series harnesses here that replace a 38403xx number

🔌 Function

Carries power and signals between the engine, its sensors and the control system as a single pre-terminated loom.

⚠️ Common Signs of Failure

• Intermittent faults that appear with vibration or when the loom is moved
• Sensor signals dropping out or reading out of range
• Insulation chafed or melted where the loom passes a hot or moving part
• Corrosion inside the connectors
• Engine cutting out, derating or failing to crank

🛠️ Service Notes

• Check which earlier number your harness replaced: 3840337 for this one, 3840339 for 3883799, 3840343 for 3883808 and 3840341 for 3887714
• Isolate the batteries before disconnecting the loom, and support it at every original clip so it cannot chafe

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3886310 → Supersedes 3840337

OEM / Related Numbers

• 3840337 earlier number superseded by this part

📦 Condition

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