Mercedes R231 SL 400 M276 Automatic Gearbox 722904 722.904 2312709400 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 SL 400 M276 Automatic Gearbox 722.904 is an original, used premium automatic transmission designed for Mercedes SL-Class R231 generation models with the M276 engine. It serves as a solid foundation for professional drivetrain repair, ensuring the preservation of factory performance characteristics and the gear-shifting comfort typical of the Mercedes brand.

Specifications and technical data

• SKU: A2312709900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2312709900
• Substitutable numbers: A2312709900, A 231 270 99 00, 2312709400
• Gearbox type: Automatic
• Category: Automatic Transmission

Technical specifications and intended use

The presented transmission belongs to the Automatic gearboxes category and has been designed to work with the M276 unit in the R231 body. The automatic transmission control ensures smooth, predictable gear changes, which translates into comfortable driving both in city traffic and at higher highway speeds.

The automatic design of the transmission allows for precise management of engine torque, reduction of jerking, and stable operation of the drivetrain. This solution is particularly valued in SL-Class cars, where a combination of dynamics, comfort, and drivetrain refinement is essential.

Benefits of using an original automatic transmission

Using an original automatic transmission in a Mercedes R231 SL 400 allows you to maintain factory drivetrain performance parameters without the need to adapt aftermarket solutions. The appropriate gear ratio configuration, matched to the characteristics of the M276 engine, supports:

• stable acceleration without excessive gear dragging,
• comfortable starting and maneuvering in urban conditions,
• maintaining optimal engine RPM when driving at a constant speed.

For the user, this means predictable vehicle behavior, consistent with the manufacturer's specifications, and a reduction in the risk of problems resulting from incompatible solutions.

Professional use in service and remanufacturing

A used automatic transmission of this type is often chosen by workshops specializing in the Mercedes brand as a base for installation or further remanufacturing. This allows for a significant reduction in repair costs compared to purchasing a brand-new transmission, while maintaining the original design and compatibility with the vehicle's electronics.

In practice, such a transmission can be used both as a complete unit for replacement and as a source of internal components in the process of professional transmission rebuilding. This gives the service center the flexibility to adjust the scope of work to the vehicle's condition and the customer's expectations.

Choosing a used automatic transmission – what to look for

When choosing a used automatic transmission for a Mercedes R231 SL 400, it is crucial to verify compatibility with the specific vehicle configuration, including the engine used and the control system. It is also important to check that the transmission comes from a reliable source and that its parameters meet the requirements of the specific car model.

To better understand when purchasing a used transmission is cost-effective and how to minimize risks, it is worth reading the guide: Used transmission – when is it worth it and what you need to remember. The article discusses the differences between manual and automatic transmissions, compatibility issues, and compares the cost-effectiveness of remanufacturing versus purchasing a used component.

Mercedes automatic transmissions – expansion and service

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 a torque converter, hydraulic control elements, or additional transmission components, check the available parts in the Mercedes automatic transmissions category.

In the context of rising service costs, it is also worth considering a strategy of combining new and used OEM components. The material describing how to reasonably reduce repair expenses, available here, may be helpful: Rising repair costs and the boom in used parts – how to save on car service?.