NEW Engine 2005 Mercedes E-420 4.0CDI V8 260 Hp OM628-910

Engine 2005 Mercedes E-420 4.0CDI V8 260 Hp OM628-910 (628.910 50 345678 ).The OM628 engine was Mercedes-Benz’s first V8 diesel with twin-turbocharging and common rail injection, offering a level of torque and refinement that was ahead of its time. It was originally developed for large luxury cars like the E-Class W211, S-Class W220, and G-Class W463.

Even today, a well-maintained OM628 delivers strong performance, smoothness, and remarkable fuel economy for a V8.

⚙️ Key Features

• Twin-Turbochargers:
  This engine uses two small turbos instead of one large one, providing faster boost (better throttle response) and very strong torque from low RPM.

• Common Rail Direct Injection:
  The OM628 was among the first V8 diesels to use Bosch’s second-generation common rail, allowing very high fuel pressure (~1,350 bar) for precise, efficient combustion.

• Durability:
  Designed to last well over 400,000 km (250,000 miles) with proper maintenance (oil changes every 10,000-15,000 km, good diesel quality, etc.).

• Power Delivery:
  Massive torque at low revs, making it very smooth and powerful, ideal for highway cruising and heavy acceleration.

• Cooling System:
  Sophisticated water-cooled system with an extra oil cooler and turbo intercoolers to manage the engine’s high thermal load.

🚀 Performance

• Very strong low-end torque — maximum pulling power available at only ~1,800 rpm.

• Smooth V8 performance; less vibration compared to inline diesels.

• Tuned for durability and long-distance cruising — often used in high-mileage taxis and armored vehicles.

🛠 OM628.910 Engine Overview