Mercedes Sprinter High-Pressure Fuel Injection Pump – Bosch CP3 | OM642 3.0L V6 | #6420701101 (2007–2018)

DESCRIPTION:

The high-pressure fuel injection pump is the heart of the OM642's common rail fuel system — and when it starts to fail, your Sprinter lets you know fast. Loss of power, hard starting, rough running, and low rail pressure fault codes are all signs that the CP3 pump is no longer generating the pressure the system needs. This is the genuine Bosch CP3 replacement pump for the OM642 3.0L V6, restoring full fuel rail pressure and clean combustion from day one.

What This Part Does

The high-pressure injection pump pressurizes diesel fuel to approximately 2,000 PSI and delivers it to the common fuel rail, where it's stored at pressure until individual injectors release precise bursts into the combustion chambers. The OM642 uses a Bosch CP3 radial piston pump driven off the camshaft. When internal components wear, the pump can no longer maintain adequate rail pressure — causing misfires, power loss, and injector performance issues even when the injectors themselves are healthy.

Common Symptoms of a Failing Injection Pump

• Low fuel rail pressure fault codes
• Hard starting or long crank times
• Rough idle or misfires across multiple cylinders
• Loss of power under load
• Black smoke and poor fuel economy

Important: VIN Verification Required

This pump is application-specific. Fitment varies by engine code, ECO Start/Stop equipment code, and emissions specification. Do not order based on year and model alone — always verify your OEM part number from the original unit or contact us with your VIN before ordering.

Fitment

• 2007–2009 Dodge Sprinter 2500/3500 – 3.0L V6 Diesel (OM642)
• 2007–2017 Freightliner Sprinter 2500/3500 – 3.0L V6 Diesel (OM642)
• 2010–2018 Mercedes-Benz Sprinter 2500 – 3.0L V6 Diesel (OM642)
• 2010–2018 Mercedes-Benz Sprinter 3500 – 3.0L V6 Diesel (OM642)

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

Part Numbers

• Mercedes OEM: 6420701101 / A6420701101 / 642-070-11-01
• Bosch: 0445010322 / 0445010211
• Cross Reference: 6420700901, 6420701301, 68028392AA
• SKU: 6420701101B