3828638 Expansion Tank | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 12 litre expansion tank from the Cooling System group, weighing 5.897 kg and listed for 10 applications across the TD, TWD and TAD series engines. It supersedes part numbers 3828467 and 845436.

🚤 Compatibility

Typically suits:

• Volvo Penta TD121G-87
• Volvo Penta TWD1231VE
• Volvo Penta TWD1010G
• Volvo Penta TWD1030ME
• Volvo Penta TWD1031VE
• Volvo Penta TD100G
• Volvo Penta TD1010G
• Volvo Penta TD1030VE
• Volvo Penta TAD1030V
• Volvo Penta TAD1030VE

• Engine Family: TD, TWD, TAD

⚙️ Key Features

• 12 litre capacity
• 5.897 kg
• Cooling System group
• Supersedes 3828467 and 845436
• 10 applications across TD, TWD and TAD engines
• Also supersedes Volvo part number 848716

🔌 Function

Holds the coolant that expands out of the circuit as it warms, and returns it as the engine cools.

⚠️ Common Signs of Failure

• Coolant level falling with no obvious external leak
• Tank cracked, weeping or stained around the seams
• Filler neck or cap seat corroded or distorted
• Internal sludge, scale or oil film in the tank
• Mounting points cracked or fixings loose

🛠️ Service Notes

• The 12 litre capacity is the ordering detail, so confirm it against your installation before ordering
• Renew the pressure cap and the hose connections at the same time, and check the mounting brackets for cracks
• It consolidates two earlier numbers, so the shape or connection positions may differ from the tank you are removing - check clearances and hose runs before fitting

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3828638 → Supersedes 3828467

OEM / Related Numbers

• 845436 earlier number superseded by this part
• 3828467 earlier number superseded by this part
• 848525 referenced in the part notes

📦 Condition

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