Mercedes W177 Automatic Gearbox Dual Clutch 700423 700.423 A7003702700 WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order.

Mercedes W177 Automatic Gearbox Dual Clutch is an original, used automatic transmission from the Automatic gearboxes range, designed for vehicles with a petrol engine. It provides a solid foundation for professional drivetrain repair in Mercedes vehicles, ensuring proper structural fit and compatibility with factory solutions.

Specifications and technical data

• SKU: A7003702700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A7003702700
• Substitutable numbers: A7003702700, A 700 370 27 00, A7003702100, A 700 370 21 00
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and technical characteristics

The presented gearbox belongs to the Automatic gearboxes group dedicated to Mercedes compact class models, such as the W177, working with petrol units. The use of an automatic transmission allows for smooth, electronically controlled gear shifting, which translates into driving comfort in city traffic and stable vehicle behavior at higher speeds.

The gearbox construction has been designed to work with the Mercedes drivetrain, taking into account the torque characteristics of petrol engines. This makes it possible to maintain proper dynamics when starting, predictable throttle response, and fuel consumption optimization under typical operating conditions.

Application in the drivetrain

The automatic transmission in the Mercedes W177 is responsible for:

• transferring torque from the petrol engine to the drive wheels,
• selecting gears depending on load, speed, and driving mode,
• cooperating with the vehicle's electronic systems (e.g., driving mode control, comfort functions),
• maintaining proper drivetrain operating parameters in various road conditions.

Thanks to its factory origin, the gearbox maintains compatibility with original equipment and control software, which facilitates integration with the existing vehicle installation and reduces the risk of communication problems between modules.

Benefits of using an original used gearbox

Choosing an original, used automatic transmission for a Mercedes allows you to combine rational repair costs with maintaining the factory operating parameters of the drivetrain. Compared to cheap replacements or uncertain reconditioning, the original transmission provides:

• construction consistent with the vehicle manufacturer's requirements,
• proper fitment to the automatic gear shifting control system,
• the possibility of selection based on the OEM number and interchangeable numbers,
• easier diagnostics and service in specialized workshops.

For workshops and end-users, this means a more predictable repair result and a reduction in the risk of additional costs resulting from component mismatch.

Selection by OEM number and technical support

When selecting an automatic gearbox for a Mercedes, it is crucial to use the OEM number and interchangeable numbers to ensure full compatibility with the specific vehicle configuration (type of petrol engine, equipment version, model year). In case of doubt, it is worth using data from the manufacturer's catalog or the VIN number, which minimizes the risk of purchasing an unsuitable component.

To better understand the specifics of the used parts market and the procedures for selection by VIN and OEM, the following expert guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths. The article discusses, among other things, cost differences, common myths, and practical tips for workshops and individual customers.

Expanding repairs within the drivetrain

If you are planning a comprehensive repair or modernization of the drivetrain area in your Mercedes and need other elements from the same group, such as other automatic transmissions, cooperating elements, or additional control components, check the available parts in the Mercedes automatic gearboxes category.

If you are also collecting other components in parallel – from the engine to small mounting elements – a guide on effective purchasing planning in one place may be useful: Comprehensive supply: from the engine to the smallest clip. Thanks to this, you will more easily plan the full scope of service work during a single vehicle downtime.