3840321 Control Unit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta PCU control unit from the Ignition and Control Systems group, weighing 1.399 kg and listed for 40 applications on D series engines. Software is ordered separately or downloaded with Vodia, so the unit arrives without the configuration your engine needs. It supersedes part number 3589079.

🚤 Compatibility

• Engine Family: D
• HP Range: 180-370 HP

Full model list at the end of this description.

⚙️ Key Features

• PCU
• Software ordered separately or downloaded with Vodia
• 1.399 kg
• 40 applications on D series engines
• Supersedes 3589079

🔌 Function

Acts as the powertrain control unit, reading the engine sensors and commanding fuelling and protection functions.

⚠️ Common Signs of Failure

• Engine will not start, or shuts down and derates without a clear cause
• Fault lamps lit and multiple sensor faults logged at once
• Loss of communication with the display or diagnostic tool
• Water tracks, salt or corrosion inside the connector
• Unit unresponsive with power and earth both proven good

🛠️ Service Notes

• Budget for the software as a separate item - the unit is not usable until it is loaded with Vodia
• Prove supply, earth and connector pins before replacing, as harness faults look identical
• SHCU 3840354 is the other control unit in this family and is not interchangeable

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3840321 → Supersedes 3589079

OEM / Related Numbers

• 3589079 earlier number superseded by this part

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-350A-A, D6-350A-B, D6-370D-B, D6-370D-A, D6-310I-B, D6-280I-B, D6-280I-A, D6-310I-A, D6-310D-B, D6-370I-A, D6-370I-B, D6-310A-B, D6-310A-A, D6-280A-A, D6-280A-B, D6-370A-B
• Volvo Penta D4-260A-B, D4-260A-A, D4-260D-B, D4-260I-A, D4-260I-B, D4-210A-A, D4-210A-B, D4-225A-B, D4-210I-A, D4-210I-B, D4-180I-B, D4-225I-B
• Volvo Penta D9A2J, D9A2G, D9A2D, D9A2B, D9A2F, D9A2K, D9A2H, D9A2A, D9A2C, D9A2E
• Volvo Penta D12D-B MP
• Volvo Penta D16C-A MH