Mercedes ML W164 GL X164 420 450 CDI Bare Engine 629912 629.912 94k, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

Mercedes ML W164 GL X164 420 450 CDI Bare Engine is a used, complete engine block in a bare engine configuration, designed for installation in high-performance diesel versions of Mercedes SUVs. This solution is for users who want to restore the efficiency of their powertrain in a controlled manner, while maintaining factory operating characteristics and stable diesel engine performance. The bare engine allows for the use of existing accessories, which promotes economical and technically predictable repairs.

Specifications and technical data

• SKU: A6290100200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6290100200
• Substitutable numbers: A6290100200, A 629 010 02 00
• Fuel type: Diesel
• Number of cylinders: 8
• Category: Engines
• Engine code: 629912
• Mileage: 94 000

Technical characteristics of the engine block

The presented engine block belongs to the Engines category and is intended for Mercedes vehicles from the ML W164 and GL X164 families in 420 CDI and 450 CDI variants. The unit runs on diesel fuel, which provides the flexibility typical of this design at low and medium RPMs, as well as favorable fuel consumption in heavier SUV segment vehicles.

The engine is equipped with eight cylinders, which translates into smooth operation and high torque potential, especially important in heavy vehicles. The used engine code allows for precise identification of the unit in service documentation and parts catalogs, facilitating the selection of compatible accessories and mounting components.

Purpose and application in Mercedes vehicles

The bare engine is suitable for users who have functional accessories (injection system, turbocharging, manifolds, auxiliary equipment) and want to transfer them to another complete mechanical base. This type of solution is often chosen in cases of serious damage to the block, crankshaft, or piston-connecting rod system, when repairing the existing unit is not cost-effective.

The V8 diesel engine in the ML W164 and GL X164 is responsible for dynamic acceleration, efficient trailer towing, and comfortable highway driving. Replacing it with a verified engine block allows you to restore the vehicle to full functionality while maintaining the original handling characteristics and the character of the V8 Diesel unit.

Benefits of choosing a used bare engine

Choosing a used engine block is a solution that combines cost control with the preservation of the factory design of the powertrain. This allows you to:

• restore the efficiency of the drivetrain without the need to purchase a complete, fully equipped engine,
• use existing, service-proven accessories,
• maintain the original operating parameters of the diesel unit,
• reduce vehicle downtime in the workshop.

Additionally, using an engine block with the correct engine code facilitates the mechanic's work, minimizing the risk of problems with fitting mounting elements and cooperating systems.

Condition, mileage, and assembly aspects

The engine comes from a used vehicle, and its mileage is known, which allows for a better assessment of its future operational potential. This information is particularly valuable when planning long-term vehicle use after repairs. The bare engine provides a solid base for further assembly with accessories, and its configuration promotes a transparent installation process in a specialized workshop.

Before installation, standard workshop procedures are recommended: verification of internal condition, inspection of seals, preparation of mating surfaces, and proper preparation of the lubrication and cooling systems. Such an approach increases the chance of trouble-free operation after an engine replacement.

Mercedes engines – selection and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as blocks, cylinder heads, or complete power units, check the available parts in the Mercedes Engines category.

When replacing a power unit, it is also worth expanding your knowledge about typical design problems in modern engines to better plan service and avoid unforeseen costs. A helpful resource might be an article describing critical solutions in popular units, such as a guide on faulty BMW E90 engines and their costly failures, which shows what to look out for when purchasing and operating used engines.