24121610 Volvo Penta Expansion Tank | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta D4 / D6 Coolant Expansion Tank - Part Number: 24121610

A genuine used Volvo Penta coolant expansion tank for selected D4 and D6 marine diesel engines.

The tank mounts above the engine's closed freshwater-cooling circuit and provides space for coolant expansion, system filling and air separation. Volvo Penta catalogues identify 24121610 as the current replacement for the earlier 3887582, 3584072 and 2114007 / 21140007 tank references.

⚙️ Key Features

• Genuine Volvo Penta expansion tank
• Current Volvo reference 24121610
• Suits selected D4 and D6 diesel engines
• Part of the heat-exchanger and closed-cooling circuit
• Replaces multiple earlier tank assemblies

🚤 Compatibility

Commonly used on

• Volvo Penta D4 marine diesels
• Volvo Penta D6 marine diesels
• Inboard, sterndrive and IPS installations
• Heat-exchanger assemblies using tank 3887582 or 24121610

Typically suits selected variants of

• Volvo Penta D4-180
• Volvo Penta D4-210
• Volvo Penta D4-225
• Volvo Penta D4-260
• Volvo Penta D4-300
• Volvo Penta D6-280
• Volvo Penta D6-310
• Volvo Penta D6-330
• Volvo Penta D6-350
• Volvo Penta D6-370
• Volvo Penta D6-400
• Volvo Penta D6-435
• A, B, C, D, E and F generation engines whose heat-exchanger diagram specifies this tank family
• HP Range: Approximately 180HP - 435HP
• Engine Type: Four- or six-cylinder common-rail marine diesel
• Year Range: Model and serial-number controlled

🔌 Function

The expansion tank accommodates coolant volume changes as the engine heats and cools. It also provides a high filling point and allows trapped air to separate from the coolant.

⚠️ Common Signs of Failure

• Coolant leaks from a split tank
• Coolant level repeatedly falls
• Tank mounting points are cracked
• Pressure cap cannot seal correctly
• Coolant stains appear around the seams
• Engine overheats because the cooling system cannot retain pressure
• Tank is distorted by excessive temperature or pressure
• Internal contamination or corrosion is present

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 24121610 → Replaces 2114007 / 21140007
• 24121610 → Replaces 3887582
• 3887582 associated with earlier tank 3584072
• 3584072 earlier expansion-tank reference

OEM / Related Numbers

• 24121610
• 2114007
• 21140007
• 3887582
• 3584072
• Pressure cap: 23321023
• Mounting screws: 965184
• Mounting washers: 976944
• Cooling-system O-rings: 949722, 976041 and 969415
• Associated coolant hoses vary by D4 / D6 model and serial number

Aftermarket / Verified Equivalents

• No confirmed independent aftermarket equivalent
• Replacement tank kits are marketed under 24121610 / 3887582 / 3584072, but most are genuine Volvo Penta assemblies

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated