Mercedes Sprinter Water Pump – OEM Replacement | OM642 3.0L V6 | #6422002201 (2010–2022)

DESCRIPTION:

The water pump is the heart of your Sprinter's cooling system — and on the OM642 3.0L V6, it's one of the most well-documented failure points on high-mileage vans. A leaking or failing pump means coolant isn't circulating, and an engine that can't shed heat won't last long. This OEM-spec replacement restores full coolant flow and protects your engine from the kind of overheating damage that turns a manageable repair into a catastrophic one.

What This Part Does

The water pump circulates coolant continuously through the engine block, cylinder heads, radiator, and heater core, keeping engine temperature within the optimal operating range. It's belt-driven off the serpentine belt and runs any time the engine is running. When the impeller corrodes, the shaft bearing wears, or the seal fails, coolant loss begins — and overheating follows quickly.

Common Symptoms of a Failing Water Pump

• Coolant puddle under the front of the van
• High-pitched whining or grinding from the front of the engine
• Temperature gauge climbing higher than normal
• Coolant level dropping with no visible external leak
• Steam from under the hood

When to Replace It

Replace immediately at any sign of leaking or bearing noise — do not drive a Sprinter with a failing water pump. A warped cylinder head from overheating costs far more than a water pump. This is also a smart preventive replacement during any timing or serpentine belt service on high-mileage OM642 engines.

Fitment

• 2010–2022 Mercedes-Benz Sprinter 2500 – 3.0L V6 Diesel (OM642)
• 2010–2022 Mercedes-Benz Sprinter 3500 – 3.0L V6 Diesel (OM642)
• 2007–2009 Dodge Sprinter 2500/3500 – 3.0L V6 Diesel (OM642)
• 2007–2017 Freightliner Sprinter 2500/3500 – 3.0L V6 Diesel (OM642)

Always verify your VIN before ordering. Contact us and we'll confirm fitment before you buy.

Part Numbers

• Mercedes OEM: 6422002201 / A6422002201
• Cross Reference: 6422000701, 6422001701, 68047688AA, 68087367AA