Mercedes-Benz OM642 350 CDI V6 Diesel Engine

Mercedes-Benz OM642 350 CDI V6 Diesel Engine Overview

The Mercedes-Benz OM642 350 CDI V6 Diesel Engine is a genuine OEM turbo diesel engine engineered for exceptional torque delivery, long-distance reliability, and premium Mercedes-Benz performance. Engine code OM642 DE 30 LA (642.862) identifies this complete V6 diesel power unit as a dependable replacement solution for compatible Mercedes-Benz vehicles.

This complete long block assembly was removed from a 2012 Mercedes-Benz donor vehicle and has approximately 176,272 km (109,530 miles). The engine remains a strong option for professional workshops, engine swap projects, restoration builds, and OEM drivetrain replacements.

Designed to Mercedes-Benz factory specifications, the OM642 V6 turbo diesel platform delivers smooth performance, durable operation, and efficient diesel drivability.

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.

Features & Specifications

• Part Type: Complete long block engine assembly

• Engine Code: OM642 DE 30 LA (642.862)

• Engine Configuration: V6 Turbocharged Diesel with Intercooler

• Displacement: 3.0 L

• Power Output: 258 HP (190 kW)

• Fuel Type: Diesel

• Condition: Used complete engine assembly

• Mileage: Approx. 176,272 km / 109,530 miles

• Year of Manufacture: 2012

• Manufacturer: Mercedes-Benz OEM

• Installation Type: Engine replacement

• Factory Mercedes-Benz diesel configuration

• OEM compatibility and fitment

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

Why It’s a Smart Choice

The Mercedes-Benz OM642 350 CDI V6 Diesel Engine is an excellent replacement solution for customers seeking reliable OEM diesel performance, factory compatibility, and strong long-term durability.

Benefits include:

• Genuine Mercedes-Benz OEM engineering

• Powerful V6 turbo diesel performance

• Strong torque delivery for daily driving

• Direct replacement compatibility

• Smooth long-distance drivability

• Durable diesel engine construction

• Reduced installation complications

• Maintains original Mercedes-Benz specifications

Unlike low-quality aftermarket alternatives, this genuine OM642 engine preserves factory drivability, electronics compatibility, and OEM diesel efficiency.

Performance & Efficiency

The Mercedes-Benz OM642 350 CDI V6 Diesel Engine delivers dependable turbo diesel performance, impressive low-end torque, and smooth power delivery for premium driving applications.

Performance highlights include:

• Reliable 258 HP diesel performance

• Smooth turbocharged acceleration

• Strong low-end torque response

• OEM diesel fuel efficiency

• Excellent highway driving capability

• Durable long-distance operation

• Mercedes-Benz drivetrain compatibility

• Optimized V6 diesel drivability

The OM642 diesel platform is highly respected for combining performance, durability, and efficient long-term operation.

Reliability & OEM Engineering

This genuine Mercedes-Benz OM642 350 CDI V6 Diesel Engine is manufactured to OEM standards to ensure reliable operation, precise fitment, and long service life.

The engine offers:

• OEM factory quality standards

• Durable turbo diesel engine internals

• Smooth operational reliability

• Factory drivetrain compatibility

• Reduced installation complexity

• Long-term diesel durability

• Proven Mercedes-Benz engineering

• Reliable premium vehicle performance

Perfect for:

• Mercedes-Benz diesel engine replacements

• OM642 restoration projects

• Professional workshop installations

• OEM drivetrain replacements

• Turbo diesel performance applications

• Long-distance driving vehicles

Delivery & Warranty

• Genuine Mercedes-Benz OEM engine assembly

• Professionally inspected before dispatch

• Secure packaging for transportation

• Ready for professional installation

• Reliable OEM replacement solution

• International shipping available

• Complete engine supplied as shown

• Long-lasting diesel engine reliability

Additional Information

The Mercedes-Benz OM642 350 CDI V6 Diesel Engine is designed for workshops, diesel specialists, and vehicle owners seeking authentic Mercedes-Benz OEM turbo diesel reliability and performance.

Its 3.0L V6 turbo diesel configuration delivers strong torque output, dependable fuel efficiency, and smooth long-distance drivability while maintaining original Mercedes-Benz engineering standards.

Whether replacing a damaged engine, completing a professional swap project, or restoring OEM drivetrain performance, this genuine OM642 diesel engine provides trusted Mercedes-Benz quality and dependable long-term value.

👉 Check compatibility before purchase: https://carenginesales.com/how-to-know-if-an-engine-fits-your-car-complete-compatibility-guide/

👉Learn more about Mercedes Engines performance and specifications: https://www.mercedes-benz.com/Cars