17214674 Expansion Tank | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta expansion tank for the cooling system, accommodating coolant volume change as the engine heats and cools while maintaining system pressure. It supersedes part number 11110410 and is listed for the TAMD63L-A and TAMD63P-A marine diesel engines.

🚤 Compatibility

Typically suits:

• Volvo Penta TAMD63L-A
• Volvo Penta TAMD63P-A

• Engine Family: TAMD

⚙️ Key Features

• Engine-coolant expansion and deaeration tank
• Provides reserve volume for coolant thermal expansion
• Confirmed on TAMD63L-A and TAMD63P-A engine installations
• Shared with Volvo construction equipment and industrial cooling packages
• Engine type: Volvo Penta TAMD63 and shared Volvo industrial diesel applications

🔌 Function

The expansion tank gives the coolant somewhere to expand into as it heats, and returns it to the circuit on cooling, keeping the system full and correctly pressurised. It also provides the filling point and a means of checking coolant level.

⚠️ Common Signs of Failure

• Coolant loss with no other visible leak point
• Cracking, crazing or weeping at the tank seams or mountings
• Coolant level that will not hold between checks
• Pressure not building or being held in the cooling system
• Discoloured, oily or contaminated coolant visible in the tank

🛠️ Service Notes

• Check the level cold with the engine stopped, and fill to between the level marks where the tank has them, or to the level given in the workshop manual for your engine — an overfilled system simply pushes coolant out past the cap as it warms
• Use the coolant type and mix specified for your engine and top up with the same; mixing coolant types can destroy the corrosion protection the whole cooling system depends on
• Inspect the tank for hairline cracks, crazing and staining around the seams and the hose spigots, and check the hoses and clips while you are there
• Check the cap seal and that the cap both relieves and draws back properly — a cap that will not vent empties the tank, and one that will not let coolant return collapses a hose
• Never release the cap on a hot pressurised system; let it cool first, and bleed and refill the system as the manual for your engine describes after any work

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 17214674 → Supersedes 11110410

OEM / Related Numbers

• 11110410 earlier number superseded by this part
• 17251612 - related pressure-cap reference where specified

Aftermarket / Verified Equivalents

• 11110410 - related Volvo expansion-tank reference in aftermarket listings
• Heavy-duty aftermarket replacement: 11110410

📦 Condition

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