Mercedes Sprinter Coolant Reservoir – Genuine OEM | VS30 All Engines | #9105015300H (2019–2024)

A cracked or leaking coolant reservoir on a VS30 Sprinter will bleed your cooling system dry over time — leading to low coolant warnings, air pockets in the cooling circuit, and eventually an overheating engine that can cause serious long-term damage. This is the Genuine Mercedes-Benz OEM coolant reservoir for VS30 Sprinters, a direct plug-and-play replacement that restores proper coolant storage, system pressure, and level monitoring without modification.

What This Part Does

The coolant reservoir — also called an expansion tank — stores the excess coolant that expands as the engine reaches operating temperature and pressurizes the cooling circuit to prevent boiling and cavitation. It feeds coolant back into the system as temperatures drop and provides a visual reference point for checking coolant level without opening a pressurized radiator cap. When the reservoir cracks, warps, or its sealing surfaces fail, the system loses pressure and coolant — quietly at first, then rapidly under load. A compromised reservoir also introduces air into the cooling circuit, which reduces heater output, disrupts thermostat function, and accelerates wear on the water pump.

Common Symptoms of a Failing Coolant Reservoir

• Coolant puddles or dried white residue beneath the van after parking
• Repeated low coolant warnings with no obvious external leak source
• Engine temperature climbing above normal, especially under load or at highway speeds
• Weak or inconsistent heater output indicating air in the cooling circuit
• Visible cracks, discoloration, or brittleness in the reservoir body or mounting tabs

When to Replace

Replace when the reservoir shows visible cracking, weeping, or structural damage. Also replace when coolant levels drop repeatedly without a clear external leak — the reservoir is often the source of slow, pressurized seepage that only appears at operating temperature.

VS30 Specific — VIN Verification Required

This reservoir fits VS30 Sprinters across the 3.0L OM642 diesel, 2.1L OM651 diesel, 2.0L diesel, and 2.0L gasoline configurations. It does not fit NCV3 (2007–2018) or T1N (2001–2006) Sprinters. Always verify by VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2019–2024 Mercedes-Benz Sprinter 1500 – All engines (VS30)
• 2019–2024 Mercedes-Benz Sprinter 2500 – All engines (VS30)
• 2019–2024 Mercedes-Benz Sprinter 3500 / 3500XD – All engines (VS30)

Part Numbers

• Mercedes OEM: 9105015300H / A9105015300H
• Cross-reference: 9105015300
• Manufacturer: Genuine Mercedes-Benz
• SKU: 9105015300H