The M278 is a classic 4.6-liter V8 biturbo gasoline engine family introduced by Mercedes-Benz in 2010 to fully replace the older-generation 5.5L naturally aspirated M273 V8 engine.
Positioning and technical characteristics of the specific variant M278.928 4WD:
Flagship high-output V8 biturbo: The M278.928 is the engine variant within the M278 family specifically designed for four-wheel-drive (4WD / 4MATIC) large-chassis platforms (the cylinder block, oil pan, and front differential passage differ from those of the rear-wheel-drive 2WD versions).
Core Technologies: Equipped with twin turbochargers, third-generation piezoelectric BlueDIRECT direct injection, multi-spark ignition, and an all-aluminum cylinder block (with a silicon-aluminum liner coating).
Compatible Platforms: Specifically designed for the all-wheel-drive versions of Mercedes-Benz’s top-of-the-line full-size SUVs (such as the GL 500 / GLS 500 4MATIC – X166) and luxury mid-to-large-size SUVs (such as the ML 500 / GLE 500 4MATIC – W166).
Our products are exported to various parts of the country, and the customers we have worked with have received unanimous praise. The company has invested over 20 million yuan in high-end remanufacturing equipment imported from abroad and a first-class production team in the country. Our warehouse has a total area of over 8000 square meters, with scientific management and sufficient supply of goods.
Engine Specifications:
Engine Code: M278.928 (M278 DE 46 AL)
Drivetrain Layout: All-Wheel Drive (4WD / 4MATIC Platform)
Cylinder Configuration: V-type 8-cylinder (V8), 90-degree angle
Displacement: 4.6 Liters (4,663 cc / 4.7L commercial rating)
Bore x Stroke: 92.9 mm × 86.0 mm
Intake and Fuel Injection: Twin-Turbo / Biturbo + BlueDIRECT DI
Block/Head Material: All-aluminum block / Aluminum cylinder heads
Valve Train: DOHC 32-valve, with dual variable valve timing (VVT)
Power Output: 435 HP – 455 HP (320 kW – 335 kW) @ 5,250 RPM
Peak Torque: 700 N·m @ 1,800–3,500 RPM
Compression Ratio: 10.5:1
Emissions Standards: Euro 5 / Euro 6
Fitment / Compatible Vehicles:
Mercedes-Benz GL-Class / GLS-Class:
X166 (GL 500 4MATIC / GL 550 4MATIC - 2012–2015)
X166 (GLS 500 4MATIC / GLS 550 4MATIC – 2015–2019)
Mercedes-Benz ML-Class / GLE-Class:
W166 (ML 500 4MATIC / ML 550 4MATIC - 2011–2015)
W166 (GLE 500 4MATIC / GLE 550 4MATIC - 2015–2018)
OE Part Number References:
Long Block / Engine Assembly:
2780101600, 2780101700, 2780103700, A2780101600, A2780103700
Turbocharger Assemblies: A2780900680 (left), A2780900780 (right)
Camshaft Adjusters: 2760503600, 2760503700, A2760503600
High-Pressure Fuel Pump: 2780700601, A2780700601
Direct Fuel Injector: 2780700187, A2780700187
To help identify the correct product, please provide:
Vehicle VIN
Original engine code
Engine serial number, if available
Original engine assembly OE number
Vehicle model, production year and drivetrain
OE references should be confirmed against the applicable Mercedes-Benz parts catalogue before the order is finalized.
A long block is a core engine assembly intended for professional engine replacement or rebuilding. Its exact configuration depends on the supplier and product specification.
Depending on the confirmed assembly, the long block may include:
Engine block and internal rotating assembly
Crankshaft
Connecting rods and pistons
Cylinder heads
Selected valve train components
The following components may be excluded and must be confirmed before purchase:
Twin turbochargers
Intake and exhaust manifolds
Timing chains, guides and tensioners
Camshafts and variable valve timing components
Oil pump and oil pan
Fuel injectors and high-pressure fuel system components
Engine wiring harness and ECU
Starter motor, alternator and other external accessories
A detailed list of included and excluded components should be agreed upon before order confirmation.
Application verification: Review engine codes, VIN information and OE references before shipment.
Wholesale purchasing support: Request quotations for individual units or volume orders.
Configuration transparency: Confirm the exact long block contents before purchase.
Export coordination: Discuss packing requirements, shipping options and export documents.
Technical communication: Share engine identification photos and original part references to help reduce incorrect orders.
Order-specific documentation: Confirm inspection records, delivery terms and warranty conditions in advance.
Product availability, lead time, order quantities and warranty coverage depend on the actual stock and supply arrangement.
Packaging and transportation arrangements can be discussed according to order quantity, destination and shipping method.
Before shipment, buyers should confirm:
Product condition and exact configuration
Included components and accessories
Gross weight and package dimensions
Packing method and protection requirements
Shipping terms and destination
Required export documentation
Warranty and claims procedures
The M278.928 is a 4.7-liter V8 gasoline engine with a displacement of approximately 4,663 cc.
Yes. The M278.928 belongs to the M278 4.7-liter twin-turbocharged V8 engine family.
Selected Mercedes-Benz GL 450 4MATIC, GL 500 4MATIC, ML 500 4MATIC, GLE 500 4MATIC and GLS 500 4MATIC applications are associated with this engine code. Exact fitment must be verified by VIN and engine number.
No. M278.928 is the engine code. The correct long block assembly OE number must be confirmed against the original vehicle and applicable Mercedes-Benz parts catalogue.
Not necessarily. Turbochargers and external accessories may be excluded. Please request the exact included-component list before ordering.
Not automatically. Different M278 variants may have different specifications, part numbers and vehicle applications. Compatibility must be verified using the engine serial number, VIN and OE references.
Please send the engine code, vehicle VIN, original engine number, required quantity and destination country. We can then review the application requirements and confirm the available product specification.
Are you sourcing a Mercedes-Benz M278.928 4.7L V8 twin-turbo engine long block for your engine rebuilding business, repair workshop or wholesale distribution operation?
Contact us with your vehicle information, engine identification details, required quantity and destination country.
Request a quotation for product availability, confirmed specifications, component configuration, packaging and shipping arrangements.
Important: Final compatibility, OE references, product condition, included components, delivery time and warranty coverage must be confirmed in writing before order confirmation.
| Place of Origin | Guangdong, China |
| Condition | New |
| Purpose | for replace/repair |
| Type | Gas / Petrol Engine |
| Power | OEM Standards |
| Quantity (pieces) | 1 - 10 | 11 - 50 | > 50 |
| Lead time (days) | 7 | 15 | To be negotiated |
1. Our remanufactured products use accessories provided by well-known brand suppliers such as VICTORREINZ, SCHAEFFLER, KS KOLBENSCHMIDT GmbH, etc.
2. Our product quality is close to the original factory quality, but the price is only 50-60% of the original engine. We can also provide you with a one-year or 100000 kilometer warranty service for the entire machine, and professional after-sales personnel will follow up with you.
3. We have over 15 years of experience in the production and research of automotive engines, and our technical level and personnel training are very scientific and mature. Customers who have worked with us have expressed their agreement with our products and after-sales service.
4. 2018 It has achieved an annual production capacity of 2200 units and has become a major supplier of high-end engine remanufacturing and parts in China's automotive aftermarket.
5. In April 2021, T/CAAMTB passed the certification company of China Automobile Research and Huacheng. 19-2019 Certification of the management system requirements of gas vehicle parts remanufacturing enterprisesIn October 2021, he became a member of the National Green Manufacturing Technology Standardization Committee and participated in the drafting of the Technical Specification for Assembly of Remanufacturing Mechanical and Electrical Products.
