22356962 Expansion Tank | Genuine Volvo Penta Part

🔧 Product Description

A genuine coolant expansion tank for Volvo Penta D3 marine diesel cooling systems. The tank provides the designed coolant reserve, deaeration space and pressure-cap connection while accepting the factory level guard, hoses and mounting bracket.

🚤 Compatibility

• Engine Family: D
• HP Range: 110-220 HP

Full model list at the end of this description.

⚙️ Key Features

• Moulded expansion tank for the D3 closed-cooling system
• Correct provision for coolant level monitoring
• Factory hose, pressure-cap and mounting locations
• Maintains the required air space for coolant expansion and recovery
• Direct replacement for the earlier D3 expansion-tank reference
• Engine type: 2.4-litre, five-cylinder common-rail marine diesel

🔌 Function

Provides a pressurised coolant reservoir, allows trapped air to separate from the coolant and accommodates coolant expansion as engine temperature changes.

⚠️ Common Signs of Failure

• Coolant seepage from moulded seams or hose connections
• Cracks around the cap neck, mounting points or level-sensor port
• Repeated coolant loss with no external hose leak
• Low-coolant warnings caused by tank damage or sensor seating problems
• Overheating, poor coolant recovery or air remaining in the closed-cooling circuit

🛠️ 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

• 22356962 → Supersedes 21666983

OEM / Related Numbers

• 21666983 (earlier Volvo Penta reference)
• 3547710 (associated coolant level guard)
• 1674083 (associated pressure cap)
• 21142689 (associated mounting bracket)
• 21162074 (associated hose)

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D3-110I-B, D3-110I-C, D3-130I-C, D3-220I-G, D3-130A-A, D3-160A-A, D3-130A-B, D3-160A-B, D3-130A-C, D3-160A-C, D3-140A-D, D3-170A-D, D3-200A-D, D3-220A-D, D3-140I-D, D3-140A-E, D3-170A-E, D3-200A-E, D3-220A-E, D3-140I-E, D3-140A-F, D3-170A-F, D3-200A-F, D3-220A-F, D3-140I-F, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-190A-B, D3-190A-C, D3-190I-A, D3-110I-A, D3-130I-A, D3-160I-A, D3-110I-D, D3-150I-D, D3-170I-D, D3-200I-D, D3-220I-D, D3-110I-E, D3-150I-E, D3-170I-E, D3-200I-E, D3-220I-E, D3-110I-F, D3-150I-F, D3-170I-F, D3-200I-F, D3-220I-F, D3-110I-G, D3-150I-G, D3-170I-G, D3-200I-G, D3-110I-H, D3-160I-C, D3-190I-B, D3-190I-C, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-130I-B, D3-160I-B, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H