Mercedes R231 SL400 Automatic Gearbox 725018 725.018 A2312707201 WARRANTY

Listing details

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

Mercedes R231 SL400 Automatic Gearbox 725018 725.018 is an original, used automatic transmission from the Automatic gearboxes group, designed for vehicles with a petrol engine. It provides a solid foundation for the professional repair of the drivetrain in the Mercedes SL R231 generation, ensuring structural compatibility with the manufacturer's factory solutions.

Specifications and technical data

• SKU: A2312707201
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2312707201
• Substitutable numbers: A2312707201, A 231 270 72 01
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and technical specifications

The presented gearbox belongs to the Automatic gearboxes group used in the Mercedes R231 SL400 model with a petrol engine. The transmission design is engineered for smooth, comfortable gear shifting and seamless integration with the drivetrain control system characteristic of this vehicle series. The automatic operating mode reduces mechanical stress, while the appropriately selected gear ratios support dynamic yet stable acceleration.

The system is optimized for operation with a petrol unit, which translates into proper gear staging, shift characteristics, and alignment with the engine's torque. As a result, the gearbox maintains consistency with the factory drivetrain configuration, which is essential both for repairs and for preserving the vehicle's original driving characteristics.

Benefits of using an original automatic gearbox

Using an original automatic gearbox in the Mercedes R231 SL400 allows for the preservation of factory drivetrain performance parameters. In practice, this means:

• consistent operation with the vehicle's factory control software,
• appropriate gear shift characteristics tailored to the petrol engine,
• maintenance of the drivetrain refinement levels intended by the manufacturer,
• easier diagnostics based on standard service procedures.

For workshops and users, this means a lower risk of compatibility issues and the ability to utilize standard installation and adaptation procedures. A used, original transmission is often a reasonable compromise between cost and maintaining high quality and predictable performance.

Application in petrol-powered vehicles

This automatic gearbox has been configured to work with a drivetrain based on a petrol engine. This is significant for both gear shift characteristics and the durability of the entire assembly. Proper matching to the fuel type reduces strain, improves smoothness, and supports stable performance across the entire rev range.

In practice, this translates into predictable vehicle behavior during acceleration, downshifting, and steady-speed driving. For the user, this means comfortable operation, and for the service center – easier maintenance of the vehicle within parameters close to factory specifications.

Condition, installation, and service aspects

The gearbox is a used component, which in practice allows for an economical repair of the drivetrain while maintaining the original design. Before installation, standard service procedures are recommended, such as checking seals, preparing the oil cooling system, and verifying associated components. Correct installation and adaptation in the vehicle allow for stable, predictable transmission operation.

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

Technical support and gearbox selection

Selecting the right automatic transmission for a specific vehicle configuration requires considering a number of technical parameters and the vehicle's service history. It is worth paying attention to symptoms typical of gearbox wear, such as jerking, delayed gear changes, or incorrect reactions to load. To better understand the differences between replacing with an original used gearbox and the remanufacturing process, read the article: Manual gearbox failures in cars – why is an original used part a more sensible choice than remanufacturing?

Although the mentioned material concerns manual transmissions, it presents a general approach to choosing original used drivetrain components, which may also be helpful when making decisions about replacing an automatic gearbox in a Mercedes R231 SL400.