Mercedes-Benz OM642 350 CDI V6 Diesel Engine

Genuine Mercedes-Benz OM642 350 CDI V6 Diesel Engine – Complete Long Block – 258 HP – Removed from a 2012 S-Class (W221)

A Complete, Test-Running OM642 Turbo Diesel Engine for Major Repairs or Swap Projects.

This is a complete, original Mercedes-Benz OM642 V6 turbo diesel engine, identification 642.862, rated at 258 horsepower. Removed from a 2012 Mercedes-Benz S-Class (W221) Vito with 176,272 km (109,530 miles), this is a fully assembled long block. It represents a comprehensive, cost-effective solution for replacing a failed engine in a compatible vehicle or for a repower project, offering proven Mercedes-Benz durability and performance.

Product Overview & Core Specifications

This is a used, complete OEM engine assembly. It includes all core internal components and is sold as removed from the donor vehicle. Ideal for professional workshops or experienced installers seeking a complete power unit.

• Engine Code: OM642 DE 30 LA (642.862)

• Power Output: 258 HP (190 kW)

• Mileage: 176,272 km / ~109,530 mi (on odometer at removal)

• Year of Manufacture: 2012

• Condition: Used, Complete Long Block Assembly

• Fuel Type: Diesel

• Configuration: V6 Turbocharged with Intercooler

Key Features & What’s Included

✔ Complete OM642 Core Engine: Includes block, cylinder heads, crankshaft, pistons, connecting rods, and valve train.
✔ Essential Attached Components: Includes oil pan, valve covers, and likely the intake manifold and engine-mounted brackets/pulleys as pictured.
✔ Proven Performance: The renowned 3.0L V6 diesel offering strong torque and reliability.
✔ Direct Replacement Potential: A comprehensive solution for engine failure, eliminating the need to source dozens of individual parts.

Primary Vehicle Applications & Compatibility

This OM642.862 engine is a direct fit for various Mercedes-Benz models. Verification against your vehicle’s original engine data plate/VIN is CRITICAL.

• Target Vehicles (Model years circa 2009-2013):

  • Mercedes-Benz S-Class (W221) 350 CDI / S350 BlueTEC

  • Mercedes-Benz Vito/Viano (639) 350 CDI

  • Mercedes-Benz ML-Class (W164) 350 CDI / ML350 BlueTEC

  • Mercedes-Benz GL-Class (X164) 350 CDI / GL350 BlueTEC

  • Mercedes-Benz E-Class (W212) 350 CDI / E350 BlueTEC

Important Technical & Buyer Advisory

This is a Major Drivetrain Component for Professional Use.

• Condition: Sold as a used assembly in “as-removed” condition. Not tested or guaranteed by us. A pre-purchase inspection by your mechanic is highly advised.

• Core Exchange: This unit may be eligible as a core for a remanufactured engine; confirm with your supplier.

• Installation Complexity: Requires professional installation, including transfer of ALL ancillary components from your original engine (injectors, high-pressure pump, turbocharger, wiring harness, sensors, ECM, etc.) and thorough system bleeding/purge.

• Electronic Integration: The Engine Control Module (ECM) from your original vehicle MUST be used and may require adaptation/coding via Mercedes-Benz SD Connect/XENTRY.

• Mandatory Verification: You MUST provide your vehicle’s VIN and original engine number to confirm software/hardware compatibility (e.g., emissions standard, sensor types, auxiliary drive configuration).

What is Typically NOT Included (Verify via Photos)

• Engine Control Module (ECU/ECM)

• Turbocharger & exhaust manifolds

• Fuel injectors & high-pressure pump

• Alternator, A/C compressor, power steering pump

• Engine wiring harness

• Heat shields and exhaust components