Description
OM642 Engine for Sale – 3.0L V6 Mercedes-Benz Diesel Engine
If you are searching for an OM642 engine for sale, you are looking for one of Mercedes-Benz’s most widely used 3.0-liter V6 diesel engines. The Mercedes-Benz OM642 is known for its strong torque, fuel efficiency, smooth operation, and broad application across Mercedes-Benz cars, SUVs, vans, and other vehicles.
At Forged & Stocked Engines, we supply OM642 diesel engines for sale for customers looking for replacement engines, engine swaps, rebuild projects, and performance applications. Depending on availability, OM642 engines may be offered as used, inspected, rebuilt, or complete replacement engines.
OM642 Engine Overview
The Mercedes-Benz OM642 is a 3.0L V6 turbocharged diesel engine produced for a wide range of Mercedes-Benz vehicles. It belongs to Mercedes-Benz’s modern generation of common-rail diesel engines and uses electronic fuel injection, turbocharging, and advanced emissions-control technology.
The engine is particularly recognized for its strong low-end torque, making it suitable for SUVs, luxury vehicles, commercial vans, and vehicles that require substantial pulling power.
OM642 Engine Specifications
| Specification | OM642 |
|---|---|
| Engine Type | V6 Diesel |
| Displacement | 3.0L / 2,987 cc |
| Configuration | 6-Cylinder V6 |
| Aspiration | Turbocharged |
| Fuel System | Common-Rail Direct Injection |
| Valvetrain | DOHC |
| Cooling | Liquid Cooled |
| Fuel Type | Diesel |
| Applications | Mercedes-Benz Cars, SUVs & Vans |
| Engine Family | Mercedes-Benz OM642 |
Exact horsepower, torque, turbocharger configuration, emissions equipment, and engine management specifications can vary according to the model year, vehicle application, market, and OM642 variant.
OM642 Engine Horsepower and Torque
The OM642 was produced in numerous versions, so output figures vary between applications.
Depending on the specific version, the 3.0L V6 diesel can produce approximately 200–260+ horsepower, with torque commonly exceeding 400 lb-ft in many applications.
The engine’s strong torque characteristics are one of its biggest advantages. Maximum torque at relatively low engine speeds gives OM642-powered vehicles strong acceleration and excellent drivability.
For a replacement engine, it is important to match the exact engine version to the vehicle’s VIN, model year, transmission, ECU, emissions configuration, and accessories.
Mercedes-Benz Vehicles Using the OM642
The OM642 was installed in many Mercedes-Benz vehicles, including various versions of:
- Mercedes-Benz E-Class
- Mercedes-Benz S-Class
- Mercedes-Benz C-Class
- Mercedes-Benz ML-Class
- Mercedes-Benz GLE
- Mercedes-Benz GL-Class
- Mercedes-Benz G-Class
- Mercedes-Benz R-Class
- Mercedes-Benz CLS
- Mercedes-Benz Sprinter
- Mercedes-Benz Vito
- Mercedes-Benz V-Class
- Mercedes-Benz Jeep applications using Mercedes diesel powertrains
Because the OM642 was used across multiple platforms and production years, engine identification is essential before purchasing a replacement engine.
OM642 Engine for Sale – Used and Replacement Options
When purchasing an OM642 replacement engine, buyers should determine exactly what level of engine assembly they need.
Used OM642 Engine
A used OM642 engine can be an economical replacement option when the original engine has suffered catastrophic failure.
A used engine may be supplied as a long block or complete engine, depending on availability.
Tested OM642 Engine
A tested engine provides an additional level of confidence because important components can be inspected before shipment.
Testing may include checking compression, oil pressure, leaks, mechanical condition, and general engine operation where applicable.
Rebuilt OM642 Engine
A rebuilt OM642 engine can be an option for customers who want an engine that has undergone internal inspection and replacement of selected components.
The exact rebuilding process depends on the condition of the core engine and the customer’s specifications.
Complete OM642 Engine
A complete OM642 engine may include components such as:
- Cylinder heads
- Intake system
- Turbocharger
- Fuel injection system
- Fuel rails
- High-pressure fuel pump
- Alternator
- Starter
- Engine wiring
- Sensors
- Oil pan
- Exhaust components
- Engine accessories
However, included components vary by supplier and engine configuration, so buyers should confirm what is included before placing an order.
Common OM642 Engine Problems
Like any modern diesel engine, the OM642 can experience issues as mileage and age increase. Common areas that may require inspection include:
- Oil cooler seals
- Intake manifold components
- Swirl flap system
- EGR system
- Diesel particulate filter system
- Turbocharger components
- Fuel injectors
- High-pressure fuel system
- Glow plugs
- Glow plug control module
- Crankcase ventilation components
- Cooling system
- Emissions-control components
The exact problems depend on mileage, maintenance history, model year, operating conditions, and the specific OM642 variant.
When purchasing a used engine, buyers should ask about its mileage, testing, compression results where available, oil condition, warranty, and included accessories.
Why Buy an OM642 Replacement Engine?
Replacing a failed engine can be considerably more practical than replacing an entire vehicle, particularly when the vehicle is otherwise in good condition.
An OM642 replacement engine can provide:
Strong Diesel Torque:
The 3.0L V6 provides substantial torque for everyday driving, towing, and SUV applications.
Good Fuel Economy:
The common-rail diesel design was developed to provide a combination of performance and fuel efficiency.
Wide Vehicle Application:
The OM642 was used across numerous Mercedes-Benz platforms.
Replacement Availability:
Because of its broad production and application range, replacement OM642 engines are available through specialist suppliers and salvage networks.
Excellent Swap Potential:
The engine’s strong torque output makes it attractive for certain engine-swap and custom automotive projects.
How to Choose the Correct OM642 Engine
Not every OM642 engine is interchangeable.
Before purchasing, provide the supplier with as much information as possible, including:
- Vehicle make and model
- Model year
- VIN
- Original engine code
- Vehicle market/country
- Transmission type
- Required engine assembly
- Emissions configuration
- Turbocharger configuration
- Required accessories
The VIN is particularly useful because Mercedes-Benz produced different OM642 versions with differences in electronics, emissions equipment, accessories, and engine management.
OM642 Engine Replacement Cost
The price of an OM642 engine depends on several factors:
- Engine condition
- Mileage
- Production year
- Engine variant
- Complete vs. long-block configuration
- Included accessories
- Testing
- Rebuilding work
- Warranty
- Shipping destination
A complete low-mileage engine with accessories will generally cost more than a bare long block.
For an accurate price, buyers should request a quotation based on their vehicle’s exact specifications.
Shipping an OM642 Engine
OM642 engines can be shipped domestically within the United States or internationally.
For export shipments, engines are typically secured to a pallet or placed inside a suitable wooden crate to protect the engine during transportation.
Shipping quotations may depend on:
- Engine weight
- Crate dimensions
- Destination ZIP or postal code
- Shipping method
- Residential or commercial delivery
- Liftgate requirements
- International destination
- Customs requirements
Customers should request the engine dimensions, shipping weight, and crate dimensions when calculating transportation costs.
OM642 Engine Warranty
When buying an OM642 engine, always ask about the supplier’s warranty before purchasing.
A professional engine warranty should clearly explain:
- Warranty duration
- Parts covered
- Labor coverage
- Installation requirements
- Testing requirements
- Core-return requirements
- Exclusions
- Claim procedures
Warranty terms can differ significantly between suppliers, so buyers should read the warranty conditions carefully.
Order an OM642 Engine for Sale
If you need an OM642 engine for sale in the USA, contact Forged & Stocked Engines with your vehicle information and engine requirements.
We can help identify the appropriate OM642 engine based on your Mercedes-Benz model, year, VIN, engine code, and required configuration.
Whether you need a used OM642 engine, replacement OM642 diesel engine, complete OM642 engine, or rebuilt OM642 engine, confirming compatibility before purchase can help prevent costly installation problems.
Frequently Asked Questions About the OM642 Engine
Is the OM642 a good engine?
The OM642 is a widely used Mercedes-Benz 3.0L V6 turbo-diesel engine known for strong torque, smooth operation, and broad vehicle application. Proper maintenance and selecting the correct engine variant are important.
How much horsepower does an OM642 have?
OM642 output varies by application and model year. Many versions produce approximately 200–260+ horsepower, while torque can exceed 400 lb-ft.
What vehicles use the OM642?
The OM642 was used in various Mercedes-Benz C-Class, E-Class, S-Class, ML, GL, GLE, G-Class, R-Class, CLS, Sprinter, Vito, and V-Class applications, among others.
Can I replace my Mercedes engine with an OM642?
If your vehicle originally used an OM642, a replacement is generally the most straightforward option. For swaps into other vehicles, compatibility involving the ECU, wiring, transmission, cooling, fuel system, exhaust, and emissions equipment must be considered.
Is every OM642 engine the same?
No. There are multiple OM642 variants. Engine specifications and components can differ depending on production year, vehicle model, market, emissions requirements, and application.
Where can I buy an OM642 engine?
OM642 engines are available through specialist Mercedes-Benz engine suppliers, used-engine dealers, salvage networks, and engine rebuilding companies. Always verify the engine code and compatibility before purchasing.
Final Thoughts
The OM642 3.0L V6 diesel engine remains an important Mercedes-Benz diesel powerplant because of its combination of torque, drivability, efficiency, and wide vehicle application.
If you are searching online for an OM642 engine for sale, Mercedes OM642 engine for sale, 3.0 diesel engine for sale, or OM642 replacement engine, make sure you verify the exact engine variant and vehicle compatibility before ordering.
For a quote on an OM642 engine, provide your Mercedes-Benz model, year, VIN, and required engine configuration so the correct replacement can be identified.
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