Used OM642 Diesel Engine for Sale – Mercedes-Benz 3.0L V6 Turbo

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⭐ Used OM642 Diesel Engine for Sale – Mercedes-Benz 3.0L V6 Turbo

Complete Buyer’s Guide, Specifications & Worldwide Availability

It remains arguably one of the most respected, durable, and widely used diesel powerplants around the world: the Mercedes-Benz 3.0L V6 turbo diesel under the OM642 designation. With strong torque, smooth power delivery, and long life, it powers dozens of Mercedes-Benz models ranging from SUVs, sedans, and vans to commercial vehicles.

Looking for a used OM642 engine for sale for one of your replacement, upgrade, or resale projects? This guide covers everything you need to know. Most importantly, we sell high-quality used OM642 diesel engines worldwide, fully inspected and ready for installation.

This 3000-word guide will help you understand:

Why the OM642 engine is in such high demand

Which models use the 3.0L V6 turbo diesel?

Full engine specifications

Reliability insights

Buying considerations

Shipping, compatibility, and installation notes

Why buying a secondhand engine is an economical option

What you get when you order from us

Understanding the OM642 Engine: Why It’s a Buyer’s Favorite

Mercedes launched the OM642 as a modern, efficient, and highly durable alternative to outdated diesel engines. Because of its outstanding balance of power, reliability, and fuel efficiency, it became a success worldwide almost instantly due to its low level of vibration.

Top advantages which make the OM642 so popular:

Strong performance with the 3.0L V6 turbo

The OM642 punched out around 190-258 hp, factory rating, depending on the model year and state of tune. It promises phenomenal acceleration for SUVs and sedans while returning outstanding fuel economy.

✔ High torque for towing & commercial use

It has a torque output of 440–620 Nm, enough to give good pulling power to vans, off-road vehicles, and general utility work.

Known for long life spans

Many OM642s, when properly serviced, have well exceeded 400,000 km, making secondhand engines a very viable replacement option that is cost-effective.

✔ Versatile & compatible

Since it powers many Mercedes-Benz car models, a matching unit for various models is easy to find all over the world.

Excellent aftermarket support

Parts, maintenance kits, and upgrades can be found anywhere since this motor attracts popularity across the globe.

Vehicles Using the OM642 3.0L V6 Turbo Diesel Engine

The OM642 was installed in the following Mercedes-Benz model series worldwide:

Mercedes SUVs & Crossovers

ML-Class / GLE-Class
GL-Class / GLS-Class
G-Class (select 3.0L diesel models)

Mercedes Sedans & Coupes

E-Class
S-Class
CLS-Class

Mercedes Vans & Commercial Vehicles

Sprinter
Vito / V-Class (selected models)

Other Automotive Brands (selected models)

Due to licensing agreements, some models from other carmakers also had the OM642 fitted, including several diesel variants of Jeep and Chrysler.

With its compatibility across a wide range of platforms, this engine is very much sought after and easy to install across numerous vehicle types worldwide.

Full Specifications of the Mercedes-Benz OM642 Diesel Engine

Following are detailed specifications for the OM642 to help a buyer evaluate it for compatibility and performance.

Engine Type

3.0-liter V6 turbo diesel
DOHC, 24-valve
Common-rail direct injection

Displacement

2987 cc

Turbocharger

Single turbocharger
Variable geometry design (VNT)
Intercooled

Horsepower Output

190–258 hp (varies by model and year)

Torque

440–620 Nm

Compression Ratio

Approx. 18:1

Fuel Injection System

Bosch common-rail
Piezoelectric injectors

Materials

Lightweight aluminum block
Steel forged crankshaft

Emission Control Compatibility

EGR
DPF (with most variants)
SCR (in later versions)

Transmission Pairing

Compatible with:
5-speed automatic
7G-Tronic 7-speed
9G-Tronic (some applications only)

These specifications place the OM642 as one of the most advanced and respected diesel V6 engines in the world.

We Sell High-Quality Used OM642 Diesel Engines Worldwide

Our company supplies pre-owned and tested OM642 engines to customers around the world. Every engine is strictly checked and verified for top quality.

✔ The engines are tested before sale.
Compression tests and quality checks are run to confirm the engine starts, idles, and runs properly.

Clean and rust-free engines

We source our engines from areas where vehicles are well maintained, thus limiting any form of wear.

✔ Worldwide shipping
We export to workshops, dealerships, fleets, and individual buyers globally.

✔ Full compatibility guidance
We help you match:
ECU options
Turbo configurations
Emissions components
Mounting brackets
Model-year variations

✔ Flexible purchase options
Whether you want:
A complete assembly of an engine
A long block
A short block
A performance-ready unit
A low-kilometer tested engine

We can provide what you need.

Why Do Buyers Choose Used OM642 Motors Instead of New or Rebuilt Units?

1. Affordability

The used OM642 is much more affordable than a new crate engine and still has great lifespan and performance.

2. OEM Quality

A used engine still retains its original Mercedes engineering—free of internal aftermarket modifications.

3. Reliable, Proven Durability

This engine is known to achieve high mileage with proper servicing, hence making the used option quite reliable.

4. Faster availability

New factory engines require long waiting periods. Second-hand ones can be dispatched almost right away.

5. Ecologically sustainable

Reusing an engine reduces manufacturing-related demand and waste.

Buying Guide: What You Should Check Before Purchasing a Used OM642 Engine

Points to Consider When Buying a Used Mercedes OM642:

Engine Mileage
Lower mileage engines will tend to provide longer operational life.
Compression & leak-down results
These tests offer peeks at internal engine health.
Emission system version
ECU setups and emissions may vary according to different markets: EU/US/Asia.
The condition of the turbocharger
The variable-geometry turbo OM642 should spool seamlessly.
Oil cooler seals
Common wear points—make sure they are updated or checked.
Fuel injector condition
Piezo injectors should be cleaned and tested.

We check all of these components in our pre-sale inspection process.

What Comes with Your OM642 Engine When You Buy from Us?

Depending on your purchasing option, your engine may include:

✔ Complete Engine Assembly
Turbocharger
Injectors
High-pressure pump
Intake manifold
Wiring harness
EGR components
Valve covers
Sensors
Fuel rails

✔ Long Block Option
Engine block
Crankshaft
Pistons
Cylinder heads

✔ Short Block Option
Block
Crank
Pistons

✔ Add-Ons (Optional)
Alternator
Starter motor
ECU
Transmission bundle

We will confirm the exact configuration prior to shipment.

Overview of OM642 Reliability

The OM642 has gained a reputation for being:

✔ Strong internal rigidity
Excellent longevity is further ensured with an aluminum block and a steel crankshaft.

✔ Good fuel economy for a V6
They find it more efficient than the previous diesels.

✔ Quiet and smooth functioning
Above all, balance and engineering assure a refined driving experience.

✔ Excellent towing and load capacity
Ideal for commercial purposes.

✔ Stable global parts availability
One major long-term ownership advantage is the ease of sourcing components.

Common Maintenance Notes (Important for Buyers)

The OM642 is very reliable, but it’s no exception in that some components periodically need attention.

Common wear items:
Turbo actuator
Oil cooler seals
EGR valve
Swirl motor
DPF (for DPF-equipped models)

These parts are inspected before shipment and replacement parts are available upon request.

Worldwide Shipping & Delivery Options

We supply and deliver used OM642 engines to the following customers and many more around the globe:

Workshops
Dealerships
Fleet operators
Car exporters
Diesel engine resellers
Individual buyers

Shipping options include:

Crate shipping
Container shipping
Air cargo (express)
Freight forwarding

All the engines are well-packed to avoid damage during transportation.

Why Order from Us?

✔ Verified, tested engines only
We sell engines with confirmed health and compression.

✔ Actual mileage reported
We provide the correct mileage information based on diagnostics and documentation.

✔ Worldwide delivery support
We offer logistics and customs clearance services.

✔ Professional customer service
We answer fitment questions, provide photos, and walk you through the process.

✔ Year-round inventory available
No long wait times—engines ready to ship.

How to Order a Used OM642 Engine

You can reach us with the following information:

Model and year of the vehicle
This is done to ensure proper configuration of the engine.
Engine code, if available
Helps identify exact compatibility.
Preferred engine type
(Complete, long block, short block, or add-on package)
Destination country
For shipping quotation.

When details are confirmed, we prepare the engine, package it securely, and arrange shipping.

Conclusion — Where to Buy a Used Mercedes-Benz OM642 3.0L V6 Turbo Diesel Engine?

The OM642 is still one of the most trusted diesel engines all over the world, which is prized for its strengths: durability, power, and efficiency. A good used OM642 engine is an exceptional solution for everyone who needs a reliable replacement or upgrade.

Our company is selling worldwide clean, tested, and fully verified OM642 diesel engines, with full specification, fast shipping, and professional customer support. Our OM642 is a smart investment in case one needs to have a reliable engine which will provide long performance.

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