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

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

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

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

Mercedes ML W164 GL X164 420 450 CDI Complete Engine 629912 is a powerful, eight-cylinder diesel unit from the V8 family, designed for use in demanding Mercedes SUVs. A complete engine from this series provides high torque, stable operating characteristics, and a solid foundation for further operation or professional powertrain repair. This is a solution for users expecting a proven design, high power reserve, and compatibility with factory vehicle systems.

Specifications and technical data

• SKU: A6290100200-1
• 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 engine specifications

The presented engine belongs to the Engines category and was designed as a diesel unit, which translates into economical operation while maintaining high dynamics. The eight-cylinder configuration ensures smooth power delivery, refinement suitable for heavier SUV-class vehicles, and great potential for towing and driving under load.

The engine code allows for precise identification of the unit in the context of selecting accessories, control units, and other powertrain components. This makes it easier to verify compatibility with a specific version of the Mercedes ML W164 or GL X164, as well as with the manufacturer's factory parameters.

Application in Mercedes ML W164 and GL X164 models

The complete V8 Diesel engine was developed for the 420 CDI and 450 CDI versions, where high durability, stable operation under load, and the ability for long-term use in varied conditions are key. This unit works well with the automatic transmissions used in these models, ensuring smooth acceleration and appropriate flexibility across the entire rev range.

This solution will work well both for standard city and highway driving, as well as in more demanding applications, such as driving with a trailer or frequent use of the vehicle's full load capacity. Thanks to the V8 design, the engine offers a characteristic, powerful throttle response and a power reserve at higher speeds.

Condition, mileage, and benefits of choosing a used engine

The unit is offered as used, with documented mileage, which allows for a realistic assessment of its previous operation. Such an engine is an attractive cost alternative to brand-new solutions while maintaining the manufacturer's original specifications. For workshops and individual users, this means the possibility of restoring the vehicle to full efficiency within a reasonable budget.

Choosing a complete V8 diesel engine for a Mercedes allows for reduced repair time – instead of an extensive overhaul of the existing unit, a ready-to-use powertrain can be installed. This is particularly beneficial in the case of serious damage, such as mechanical failures of the block, crankshaft, or extensive damage to the crank-piston system.

Selection, compatibility, and technical support

To properly match this engine to a specific ML W164 or GL X164 unit, it is recommended to verify compatibility using the VIN and the part numbers used by the manufacturer. This helps avoid problems with installation, differences in accessories, or control unit software. Proper selection translates into seamless integration with the vehicle's electrical system, cooling system, and exhaust system.

For users who want to better understand the specifics of the used parts market, selection procedures, and the real cost differences between new and used components, our expert guide will be useful: Why it is worth buying used gearboxes and engines – facts instead of myths. The article discusses, among other things, selection by VIN/OEM, common myths, and practical examples from workshops.

Expansion and modernization of the Mercedes powertrain

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

By using original solutions from the Engines category, it is possible to maintain the consistency of the entire powertrain, which facilitates subsequent service, diagnostics, and potential control software updates. As a result, the vehicle retains its factory operating parameters, and the user gains predictable car behavior in all conditions.