3887186 Starter Relay | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta starter relay from the Starting System group, weighing 0.254 kg and listed for 24 applications across D, TWD and TAD series engines. It supersedes part number 3840001.

🚤 Compatibility

• Engine Family: D, TWD, TAD

Full model list at the end of this description.

⚙️ Key Features

• 0.254 kg
• Supersedes 3840001
• 24 applications across D, TWD and TAD series engines
• Starting System group

🔌 Function

Switches the heavy starter current on a small signal from the key or start button, so the control circuit never carries starter load.

⚠️ Common Signs of Failure

• A single click and no crank when the key is turned
• Starter engaging only intermittently, or when the relay is tapped
• Starter staying engaged after the engine fires
• Burnt smell, or terminals discoloured and pitted
• Heavy voltage drop measured across the relay while cranking

🛠️ Service Notes

• Check battery condition, main cables and earths before condemning the relay — a poor connection gives the same symptoms
• Isolate the batteries before working on the starter circuit

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3887186 → Supersedes 3840001

OEM / Related Numbers

• 3840001 earlier number superseded by this part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 D12D-A MG, D12D-A MH, D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MH, D12D-C MP, D12D-D MP, D12D-E MG, D12D-E MP, D12D-F MP, D12D-G MP, D12D-H MP
• Volvo Penta TAD1241GE, TAD1241VE, TAD1241-42VE
• Volvo Penta TAD1242GE, TAD1242VE
• Volvo Penta TAD1250VE, TAD1250-52VE
• Volvo Penta TAD1240GE
• Volvo Penta TAD1251VE
• Volvo Penta TAD1252VE
• Volvo Penta TWD1240VE