Mercedes Sprinter Turbocharger – Garrett | NCV3 3.0L OM642 | #6420907080 (2007–2009)

A failing turbocharger on a NCV3 Sprinter doesn't just rob power — it can push oil into the intake and intercooler, foul the charge air system, and cause progressive engine damage that turns a turbo replacement into a much larger repair. This is the Garrett turbocharger for 2007–2009 NCV3 Sprinters equipped with the 3.0L OM642 V6 diesel engine, a direct replacement that restores factory boost pressure, throttle response, and power delivery.

What This Part Does

The turbocharger uses exhaust gas energy to spin a turbine wheel, which drives a compressor wheel on the same shaft that forces additional dense air into the intake manifold — allowing the engine to produce significantly more power than an equivalent naturally aspirated engine. On the OM642, the turbo is a Garrett variable geometry design (VGT) with electronically controlled vanes that adjust the turbine's effective nozzle area to optimize boost delivery across the full RPM range. At low RPM, the vanes close to accelerate exhaust gas flow and spool the turbo quickly; at high RPM, they open to prevent over-boost and protect the turbo from excessive shaft speed. When the turbo's shaft bearings wear, the compressor or turbine wheel contacts the housing, or the VGT actuator fails, boost pressure drops — triggering reduced power, fault codes, and in severe cases, oil consumption and blue smoke from the exhaust.

Common Symptoms of a Failing Turbocharger

• Noticeable loss of power, particularly under load or at highway speeds
• Slow or delayed throttle response with reduced acceleration
• Excessive black or blue smoke from the exhaust at startup or under boost
• Whistling, whining, or grinding noise from the turbo area under acceleration
• Boost pressure fault codes or engine entering limp mode
• Oil consumption with no visible external leak — oil pushed into the intake via failed turbo seals

When to Replace

Replace when shaft play is confirmed, when the turbo produces abnormal noise under boost, or when boost pressure fault codes persist after ruling out hoses, actuators, and charge air leaks. Also replace when oil contamination in the intake tract or intercooler is traced back to turbo seal failure. Always flush the charge air system and intercooler after replacing a failed turbo — metal debris from a failed compressor wheel can contaminate the entire charge air path.

NCV3 OM642 Specific — VIN Verification Required

This turbocharger is for 2007–2009 NCV3 Sprinters equipped with the 3.0L OM642 V6 diesel engine. It is a different unit from the 2010+ BlueTec turbocharger (6420908980). Turbocharger part numbers vary by engine tune, emissions configuration, and build date — always verify your engine code and VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2007–2009 Dodge Sprinter 2500 – 3.0L OM642 (NCV3/W906)
• 2007–2009 Dodge Sprinter 3500 – 3.0L OM642 (NCV3/W906)
• 2007–2009 Freightliner Sprinter 2500 / 3500 – 3.0L OM642 (NCV3)
• 2007–2009 Mercedes-Benz Sprinter 2500 / 3500 – 3.0L OM642 (NCV3)

✔ 2007–2009 only — 2010+ BlueTec models use a different turbocharger (#6420908980)
✔ Always flush charge air system and intercooler after replacing a failed turbocharger
✔ This part is VIN specific — always verify before ordering

Part Numbers

• Mercedes OEM: 6420907080 / A6420907080 / 642-090-70-80
• Full OEM with suffix: 642090708080
• Manufacturer: Garrett
• SKU: 6420907080