3840921 Insert | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta insert from the Cooling System group, weighing 2.438 kg and listed for 10 applications on D series engines. It sits within 23 grams of insert 3840379 at 2.461 kg, so the published weights do not separate them - order by part number, using the application count as a secondary check. End cover 3840924 shares the same 10 applications and is likely to be needed with it.

🚤 Compatibility

Typically suits:

• Volvo Penta D3-110I-B
• Volvo Penta D3-110I-C
• Volvo Penta D3-130I-C
• Volvo Penta D3-130A-B
• Volvo Penta D3-160A-B
• Volvo Penta D3-130A-C
• Volvo Penta D3-160A-C
• Volvo Penta D3-160I-C
• Volvo Penta D3-130I-B
• Volvo Penta D3-160I-B

• Engine Family: D
• HP Range: 110-160 HP

⚙️ Key Features

• 2.438 kg
• 10 applications on D series engines
• Only 23 grams apart from insert 3840379, so weight is no guide
• Same application count as end cover 3840924

🔌 Function

Forms the internal element of its cooling assembly, directing coolant flow through the housing.

⚠️ Common Signs of Failure

• Coolant temperature climbing under load
• Weeping from the housing joints
• Passages scaled up or packed with silt
• Erosion or corrosion pitting on the insert faces
• Coolant loss with no visible external leak

🛠️ Service Notes

• Order by number, as insert 3840379 is almost identical on the scales
• Renew all seals and gaskets and consider end cover 3840924 at the same time
• Flush the cooling system so the new insert does not silt up straight away

📦 Condition

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