Mercedes-Benz OM651 2.1L Turbo Diesel Engine Long Block
Reliable CDI Diesel Engine Replacement for Mercedes-Benz Passenger and Commercial Vehicles
The Mercedes-Benz OM651 Engine Long Block is a high-efficiency 2.1L four-cylinder turbocharged diesel engine widely used across Mercedes-Benz passenger cars, vans, and light commercial vehicles. Known for its excellent fuel economy, strong torque output, and long service life, the OM651 is an ideal replacement engine for repair, rebuilding, and fleet maintenance applications.
This OM651 long block is supplied fully assembled to OEM specifications, helping reduce installation time while ensuring dependable performance and durability.
Engine Specifications
| Engine Model |
OM651 |
| Engine Type |
Inline 4-Cylinder Turbocharged Diesel |
| Displacement |
2.1L / 2143 cc |
| Bore × Stroke |
83.0 mm × 99.0 mm |
| Compression Ratio |
16.2:1 |
| Valvetrain |
DOHC, 16 Valves |
| Fuel System |
Common Rail Direct Injection (CDI) |
| Turbocharger |
Single Turbo or Twin Turbo (Depending on Version) |
| Cooling System |
Water-Cooled |
| Block / Head Material |
Cast Iron Block / Aluminum Cylinder Head |
Performance Output
- Maximum Power: 95–204 hp (70–150 kW)
- Maximum Torque: 250–500 Nm
- Emission Standard: Euro 5 / Euro 6 (depending on variant)
Compatible Vehicles
This OM651 Engine Long Block is compatible with a wide range of Mercedes-Benz models, including:
- Mercedes-Benz C-Class (C200 CDI, C220 CDI, C250 CDI)
- Mercedes-Benz E-Class (E200 CDI, E220 CDI, E250 CDI)
- Mercedes-Benz GLK-Class
- Mercedes-Benz GLC-Class
- Mercedes-Benz V-Class / Vito
- Mercedes-Benz Sprinter
- Mercedes-Benz CLS 250 CDI
- Mercedes-Benz A-Class / B-Class CDI Models
Please verify the engine code, VIN number, and production year before ordering.
What's Included in the Long Block
- Fully assembled cylinder head
- Cylinder block assembly
- Crankshaft and connecting rods
- Pistons and piston rings
- Camshafts
- Timing chain assembly
- Main bearings and connecting rod bearings
- Valve train components
Product Advantages
- OEM-standard manufacturing and inspection procedures
- Excellent fuel efficiency and low operating costs
- High torque output for passenger and commercial applications
- Fully assembled long block for convenient installation
- Compression, oil pressure, and sealing performance tested
- Suitable for engine replacement, overhaul, export, and fleet maintenance projects
Packaging & Shipping
- Heavy-duty export wooden crate packaging
- Worldwide sea freight and air freight options available
- Bulk purchase and wholesale orders supported
- Professional loading and export documentation services
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