Mercedes M278 Engine for Sale – Your Top Provider of Luxury V8 Performance
If you want to purchase a Mercedes M278 engine, you are in the right place. We are your premier source of performance-tested, high-quality M278 V8 Mercedes-Benz engines for sale. Whether you’re installing a replacement engine in an older model, restoring a luxury car, or simply want to provide it with some additional performance, our M278 engines provide you with the power, reliability, and class that you expect from a Mercedes-Benz engine.
This comprehensive blog is all you’ve ever needed to know about the M278 engine. From its specifications and compatibility to its issues and most importantly—why our M278 engines are your one-stop shop when it’s time to purchase. Mercedes M278 Engine For Sale
What Is the Mercedes M278 Engine?
Mercedes-Benz M278 is a 4.7-liter twin-turbo V8 engine introduced to complement the naturally aspirated M273 engine. It is Mercedes’ venture into more fuel-efficient yet high-performance forced induction engines. Implemented in most of the luxury flagship models, the M278 has a nice mix of luxury and performance. Mercedes M278 Engine For Sale
Major Specifications:
- Engine type: 4.7L V8 biturbo (twin-turbocharged)
- Fuel system: Direct injection
- Horsepower: ~429 hp to 577 hp (in AMG models)
- Torque: A maximum of 664 lb-ft (in the high-performance variants)
- Applications: S-Class, E-Class, CLS-Class, G-Class, GL-Class, and more.
The M278 is designed to deliver uncompromising top-class performance with no compromise for stringent emission regulations. It features the latest Mercedes technology of start/stop technology, direct injection, and twin turbocharging. Mercedes M278 Engine For Sale
Cars Supportable by the M278 Engine
In case you are asking if our Mercedes M278 engine for sale will fit your car, here is the list of vehicles that we can install them in: Mercedes M278 Engine For Sale
- Mercedes-Benz S550 (W221, W222)
- Mercedes-Benz CLS550 (W218)
- Mercedes-Benz E550 (W212)
- Mercedes-Benz GL550 (X166)
- Mercedes-Benz GLE550 (W166)
- Mercedes-Benz SL550 (R231)
- Mercedes-Benz G550 (pre-facelift)
- Mercedes-Benz ML550 (W166)
The M278 also has AMG-tuned versions in models like the Mercedes-AMG S63, but those engines are sometimes categorized under the M157 designation due to internal AMG modifications. Mercedes M278 Engine For Sale
Why Buy a Mercedes M278 Engine from Us?
You might find various options online when searching for a Mercedes M278 engine for sale, but not all engines are created equal. Here’s what sets us apart:
1. Quality and Testing
All of our M278 engines are inspected and tested thoroughly. Engines are leak-down-tested, compression-tested, and visually inspected for wear. We want to give you a turnkey product so you can have confidence in knowing you can install with ease. Mercedes M278 Engine For Sale
2. Options for Different Conditions
Select from: Mercedes M278 Engine For Sale
- Used M278 engines – Economical and low mileage.
- Rebuilt M278 engines – Rebuilt with all new parts.
- Remanufactured M278 engines – New to you, remanufactured to OEM or better specs.
3. Quick & Safe Shipping
We ship engines throughout the United States and even internationally, packaged carefully so that there is no damage in transit. We also offer expedited shipping.
4. Technical Support
Need to select an M278 model? Our sales and technical staff will guide you to the right fit for your VIN, vehicle trim, and model year.
5. Coverage Warranties
We support our engines with warranties so that you can drive with assurance. Rebuilt and remanufactured engines have longer coverage.
Common Mercedes M278 Engine Problems
The M278 is a highly sophisticated and powerful engine, while being a high-performance engine, it also has some problems that are common. Purchasing a Mercedes M278 engine, it is useful to know the reason for replacement.
1. Timing Chain and Camshaft Adjusters
Some were due to timing chain stretch or wear in the camshaft adjusters and resulted in engine rattle or misfire. Engine replacement would be better than rebuilding on a mileage basis.
2. Valve Cover Gasket Oil Leaks
Valve cover gasket oil leaks or oil cooler seal leakage are common for M278 engines. They can be repaired but, in high mileage uses, engine replacement is better.
3. Turbocharger Failure
The twin turbos are not only costly to replace but also tricky to replace. Replacing turbocharged engines is cheaper.
4. Issues with the Crankshaft Position Sensor
It can lead to hard start and stall and also point to additional inner issues on older engines.
When you purchase an M278 engine from us, you’re receiving tested and inspected unit, without these common faults—or rebuilt to spec to prevent them.
Buy with Confidence – Our M278 Engines are Ready to Install
We don’t sell engines—we sell ready-to-run powerplants for hobbyists, shops, and Mercedes owners who demand the best. Here’s what you’ll receive:
- Complete long blocks or long blocks with turbos
- Wiring harness compatibility information on request
- Technical support and installation guidance
- VIN verification and fitment guarantee
- UK-wide and international shipping
Real-World Scenarios: Why Our Clients Prefer Us
Scenario 1: Shop Replacing a Blown Engine
A shop phoned and requested that we provide them with a remanufactured M278 engine in a 2014 S550 that had a blown turbo and a clunking bottom-end. We provided them with a remanufactured engine with new internals and turbos as part of the deal—all they had to do was drop it in.
Scenario 2: Home-Owner Replacing a CLS550
One of the buyers, who were dealing in a 2012 CLS550, required a good used M278 engine. We verified his VIN, matched ECU compatibility, and provided him with a tested low-mileage engine within a week.
Scenario 3: Fleet Maintenance
An owner of a fleet of GL-Class SUVs purchased multiple engines from us and benefited from bulk rate discounts and additional support.
What’s Included in Our M278 Engine Packages?
Depending on the model and condition of the engine, the following can be expected:
Used Engines
- Long block with heads
- Timing components
- Oil pan and valve covers
- Turbochargers (where fitted)
Rebuilt / Remanufactured Engines
- New seals and gaskets
- Billet rebuilts on heads
- New timing components
- New crankshaft, pistons, and rods, reconditioned
- Cleaned and inspected thoroughly
All of the engines are cleaned, prepared, and ready to install.
Tips for Installing a Replacement M278 Engine
- Check Compatibility: Re-verify your VIN with engine variant always. We’ll do that for you before shipping.
- Check Accessories: Exchange new accessories such as water pumps, belts, and sensors.
- Flush Systems: Flush cooling and oil systems before install.
- OEM Fluids Only: Mercedes recommends specific oils and coolants to use—don’t skip them.
- Professional Installation Recommended: With reman or rebuilt engines particularly, professional installation ensures warranty and long-term performance.
We Ship M278 Engines Worldwide
Regardless of your location in the U.S., Canada, UAE, Australia, or Africa, we can deliver your engine to you in a safe and secure manner. We use logistic partners with express delivery, customs forms, and tracking.
Require expedited freight or residential address delivery? No problem—simply call or message us, and we’ll arrange it.
FAQs – Mercedes M278 Engine for Sale
Q: Are your M278 engines turbocharged?
Yes, a few of our units do have factory twin turbos. Order them and ask for it.
Q: Can the M278 be transplanted from an S550 to a CLS550?
Generally, yes. We can help procure the correct engine code and electricals to match.
Q: What is the warranty on the rebuilt engine?
Generally 6–12 months depending on application and mileage. Longer warranties are available.
Q: What is the shipping cost?
The shipping costs are different depending on location. Our shipping rates are competitive, in addition to having flat-rate shipping within the country.
Buy a Mercedes M278 Engine for Sale Today by Contacting Us
Order Mercedes M278 engines for sale online today. Whether you need a remanufactured engine or discounted used, we have them in stock and ready to ship. Call our sales representatives today and let us get you back on the road with power and confidence in your Mercedes.
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Final Thoughts: Get the Best Price on Mercedes M278 Engines
Mercedes M278 is a new V8 with high luxury and excellent performance. If your vehicle engine is on its last leg, or has become damaged, then a new M278 engine is the solution.
We are making purchasing the correct pieces M278 engine-tested, warranty-covered, and installation-ready. Steer clear of unscrupulous sellers or junkyard motors. Do the job right and have your Mercedes purring like new.
✅ High-output engines
✅ VIN-matched for best fitment
✅ Fast shipping, good quality, warranty-guaranteed