Mercedes W221 S 500 Complete Engine 273961 273.961 388HP 89k miles, 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 W221 S 500 Complete Engine 273961 273.961 388HP 89k miles, WARRANTY is a complete powertrain assembly from the V8 family, designed for the luxury S-Class limousine. The eight-cylinder petrol unit ensures smooth, balanced operation and high driving refinement, while the complete engine configuration facilitates efficient replacement in the vehicle. This is a solution for users expecting original performance characteristics and solid operational parameters while maintaining cost-effectiveness.

Specifications and technical data

• SKU: A2730100002-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2730100002
• Substitutable numbers: A2730100002, A 273 010 00 02
• Fuel type: Petrol
• Number of cylinders: 8
• Category: Engines
• Engine code: 273961
• Mileage: 89 000

Technical characteristics of the powertrain

The presented engine belongs to the Engines category and represents a petrol V8 unit used in the luxury class model. Eight cylinders provide high power potential, excellent flexibility across the entire rev range, and stable operation under loads typical for a heavy limousine. The use of petrol fuel promotes quiet, refined operation and quick load response, which translates into a comfortable yet dynamic driving experience.

A complete engine is particularly beneficial for major repairs, as it reduces the need to transfer many components from the damaged unit. This simplifies the installation process, shortens vehicle downtime, and reduces the risk of errors resulting from incorrect selection of auxiliary components.

Application and installation benefits

The powertrain is designed for the S-Class vehicle, where the priority is a combination of comfort, power, and durability. The V8 petrol engine works well with automatic transmissions, ensuring smooth acceleration and stable highway cruising. Thanks to the appropriate structural configuration, it is possible to maintain the factory characteristics of the drivetrain, which is important for both comfort and the longevity of other components.

The main advantages of installing this unit include:

• maintaining the original dynamics and refinement of a premium class vehicle,
• consistency with the factory drivetrain architecture,
• reduction of adaptation work during engine replacement,
• possibility of economical repair compared to purchasing a new unit.

Condition, origin, and operational aspects

The engine comes from a used vehicle, which allows for a favorable combination of price and adherence to the manufacturer's original specifications. The unit has a documented mileage, which facilitates the assessment of its service history and planning for future operation. For many users and workshops, this is a reasonable compromise between repair costs and the expected durability and predictability of the engine's behavior in daily use.

In practice, this means the ability to restore the vehicle to full efficiency while maintaining its factory driving character, without the need for unreliable substitutes. A properly selected V8 petrol unit allows for maintaining high acoustic comfort, smoothness of operation, and the power reserve typical of this model.

How to safely choose a used engine

When selecting a used engine, it is crucial to verify compatibility with the vehicle using the VIN or catalog numbers and to work with a workshop experienced in handling V8 units in premium cars. It is worth paying attention to:

• compatibility of the engine code with the vehicle configuration,
• mileage history and operating conditions,
• professional preparation of the unit for installation.

To better understand how to evaluate the cost-effectiveness of purchasing a used powertrain and how the selection process via VIN and catalog numbers works, it is worth reading the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses the most important procedures and common mistakes made during such investments.

Related products from the same group

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