Mercedes-Benz OM601 Diesel I4 Engine 200D / 220D

Description

For sale is a used Mercedes-Benz OM601 diesel inline-4 engine, commonly found in the 200D and 220D models. This engine was removed from a donor vehicle and inspected prior to listing. It remains in good used condition, showing only normal wear consistent with age and proper maintenance. The engine is supplied as a long block and is suitable for direct replacement, restoration projects, or rebuild preparation.
The OM601 engine is known for its simple mechanical design, excellent fuel economy, and long service life. It was engineered to deliver dependable performance under everyday driving conditions while maintaining Mercedes-Benz’s reputation for durability. This engine is ideal for owners seeking to restore original driving characteristics or keep their classic diesel Mercedes running reliably.

Performance & Reliability

The OM601 features a single overhead camshaft, 8-valve cylinder head, cast-iron block, and mechanical diesel injection system, designed for efficiency and endurance. Prior to removal, the engine operated normally with no abnormal knocking or excessive smoke. During inspection, the following checks were completed:
Engine rotates freely
Compression remains even across cylinders
No visible cracks in block or cylinder head
Oil passages and mounting points intact
The OM601 is respected for its ability to reach very high mileage when serviced correctly. Its straightforward mechanical injection system allows for easier maintenance compared to later electronic diesel engines. When installed in its original application, it integrates directly with factory cooling, exhaust, and drivetrain systems.
This engine is suitable for stock restorations, daily driver replacements, and classic Mercedes diesel rebuild projects. It is also a strong candidate for preventative maintenance or light overhaul work.

Fitment

Fits in:
Mercedes-Benz 200D
Mercedes-Benz 220D
Mercedes-Benz W201 and W124 models originally equipped with the OM601 engine
This is a direct-fit engine for the above applications when installed with correct accessories and wiring. No modification is required when replacing an original OM601 engine. Buyers should confirm engine code and vehicle compatibility before purchase.

Warranty & Installation

This engine includes a 6-month limited mechanical warranty, covering internal engine components under normal operating conditions. External accessories, injectors, pumps, and wear items such as belts, hoses, and gaskets are not covered due to prior use.
Professional installation is strongly recommended. During installation, it is advised to:
Replace engine oil, coolant, and filters
Inspect timing components and seals
Check fuel system connections
Perform an initial test run before regular operation
Proper installation and service help ensure reliable performance and extended engine life.

If you are searching for a genuine Mercedes-Benz OM601 diesel engine for your 200D or 220D, this used unit offers dependable operation, correct fitment, and excellent value for classic diesel Mercedes ownership. It is an ideal replacement for a worn or damaged engine while preserving factory specifications and reliability. With proven engineering and solid condition, this engine is ready to return your vehicle to smooth and economical service.