Mercedes-Benz M278 Engine for Sale: Everything You Need to Know Before Buying
If you are in the market for a powerful, reliable, and high-performance engine, the Mercedes-Benz M278 engine is a great option. Whether you are replacing a faulty engine, upgrading your vehicle, or restoring a Mercedes to its former glory, understanding the M278 engine details is important. This is an all-inclusive guide that discusses everything you need to know before you buy your M278; yes, we sell Mercedes-Benz M278 engines. We carry both used and rebuilt units with warranty-backed reliability ready to ship.
What Is the Mercedes-Benz M278 Engine?
The M278 is a 4.7-liter V8 biturbo engine produced by Mercedes-Benz as part of its BlueDIRECT family of engines. The engine debuted in 2010 as a successor to the naturally aspirated M273 engine. The M278 was designed to deliver high performance while maintaining fuel efficiency and lower emissions and has been a popular engine in luxury sedans and SUVs.
Main Specifications
- Engine Type: 4.7L V8 biturbo
- Fuel Type: Gasoline
- Horsepower: 402 hp to 449 hp, based on model year and variant
- Torque: 443 lb-ft to 516 lb-ft
- Configuration: DOHC, 32-valve
- Fuel System: Direct Injection
- Turbochargers: Twin-turbo
- Cooling: Water-cooled
The Mercedes-Benz M278 Engine is among the most powerful engines in its category, producing refined luxury and raw, unbridled power.
Vehicle Compatibility
Mercedes-Benz M278 Engine variants are used in a variety of high-performance Mercedes-Benz models, including the following:
- Mercedes-Benz S-Class (S550)
- Mercedes-Benz CLS-Class (CLS550)
- Mercedes-Benz E-Class (E550)
- Mercedes-Benz GLE-Class (GLE550)
- Mercedes-Benz GL-Class (GL550)
- Mercedes-Benz SL-Class (SL550)
Mercedes-Benz G-Class (G500 in some markets)
Check your vehicle’s VIN and engine code prior to ordering to ensure optimum compatibility. Compatibility can be checked by our experts as part of our sales process.
Things to Watch Out For
Like any modern performance engine, there are several known issues in the M278. Being aware of them will enable you to make an informed decision.
Timing Chain Tensioner Wear
Early model Mercedes-Benz M278 Engine may be susceptible to timing chain failure. Rebuilt engines typically have new timing components to prevent this failure.
Oil Leaks
Valve cover gaskets and timing cover seals may leak. All of our rebuilt M278 engines have new seals and gaskets.
Turbocharger Failure
Certain models are related to early signs of turbo wear. We test and rebuild turbos or replace them completely in our rebuilt engines.
Carbon Build-Up
One of the consequences of direct injection is the depositing of carbon on the intake valves. Our remanufactured M278 engines are thoroughly cleaned to eliminate this problem.
Why Buy a Mercedes-Benz M278 Engine from Us?
We sell top-quality Mercedes-Benz M278 engines, used and professionally rebuilt. Here’s why buying from us is the correct choice:
Thoroughly Tested Units
Every engine is compression-tested, inspected for cracks or wear, and verified for full functionality before being shipped.
Warranty Provided
We stand behind our products. Our remanufactured M278 engines are guaranteed for 6 to 24 months, depending on configuration.
Expert Support
We have Mercedes engine specialists who guide you through the choice and installation procedure.
Fast Shipping
We offer fast, global shipping to help get your car running as quickly as possible.
Used and Rebuilt Options
Whether you need an affordable used M278 engine or a like-new rebuilt one, we’ve got you covered.
Rebuilt vs. Used: Which M278 Engine Is Best for Your Needs?
Rebuilt Engines
Engines that have been disassembled, cleaned, inspected, and reassembled using new or remanufactured parts. Best for:
- Long-term dependability
- Improved performance
- Engine restoration projects
Used Engines
Engines that have been pulled from donor vehicles and tested for operation. Best for:
- Budget buyers
- Quick replacement requirements
- Vehicles with shorter-term use expectations
Still undecided which to choose? Contact us for a personal recommendation.
Our Rebuild Process: Trustworthy Quality
Our rebuilt M278 engines are rebuilt professionally with only high-quality OEM components and the latest machining practices. Our process is as follows:
- Full disassembly and inspection
- Replacement of worn-out parts (bearings, pistons, rings, gaskets)
- Pressure and leak tests
- Resurfacing of blocks and heads
- Complete reassembly and bench testing
The result is a high-performance engine that matches or surpasses original factory specifications.
We offer flexible pricing, frequent promotions, and core exchange options to make your final cost lower.
Installation Support and Services
We don’t just sell engines-we support you throughout your installation process:
- Installation instructions
- Compatibility checks
- Engine mount recommendations
- ECU and wiring guidelines
Availability of qualified Mercedes-Benz technicians in your area
We must make your installation simple and stress-free.
Customer Testimonials
“I bought a remanufactured M278 engine from here for my CLS550. Support team was really knowledgeable and the engine runs like new. Highly recommended!” – Michael L.
“Fast shipping and the engine was exactly as described. Good compression and no issues after 6 months. Thanks!” – Rachel T.
How to Order Your M278 Engine
Order your Mercedes-Benz M278 engine here. It couldn’t be simpler:
- Contact us for a free quote. Call or email our sales team.
- Give us your VIN, and we verify the fit.
- Choose Your Engine: Rebuilt or used?
- Shipping Arrangements: We handle the logistics, delivering to your door or straight to your installer.
- Install with Confidence: Take advantage of the support and installing resources.
- We offer several payment options and finance options for all qualified customers.
Final Thoughts: Is the M278 Engine Suitable for You?
If you have a Mercedes-Benz with a dying engine—or you’re mapping out a performance overhaul—the M278 engine is a beast that performs. With twin-turbo power, robust engineering, and broad compatibility, it continues to be popular with enthusiasts and mechanics alike.
Whether you opt for an affordable used engine or splurge on a precision-rebuilt unit, purchasing your Mercedes-Benz M278 engine from us guarantees reliability, performance, and peace of mind.
Ready to Purchase? Let’s Get Started
We’re honored to be your premier source for Mercedes-Benz M278 engines for sale. Contact us today to verify availability, obtain a quote, or pose a question. We’re here to assist you every step of the way.
Call us today and get your M278 engine shipped fast!
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