Mercedes Sprinter W903 Rear Axle Differential Diff A9033501200 741408 37:9 4,111

Listing details

The differential is sold with a 90-day warranty! It was tested before removal and is in full working order.

Mercedes Sprinter W903 Rear Axle Differential Diff is a complete rear drive axle from the Differentials category, designed for installation in the vehicle's rear axle. This component ensures proper torque distribution to the wheels and stable operation of the drivetrain, which is crucial for durability and predictable vehicle handling. With a specific gear ratio of 37:9 (4.111), this axle is particularly useful for precise repairs or adjusting the driving characteristics of the Sprinter W903.

Specifications and technical data

• SKU: A9033501200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9033501200
• Substitutable numbers: A9033501200, A 903 350 12 00, A0003500400, A 000 350 04 00
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the rear axle

The presented drive axle is designed for installation in the rear of the vehicle, where it is responsible for transferring drive from the driveshaft to the wheels and compensating for the difference in rotational speed between them. The applied 37:9 (4.111) gear ratio affects acceleration characteristics, load capacity, and engine RPM at a given driving speed, which is significant in both delivery and specialized applications. A properly selected differential helps reduce drivetrain component wear and improves the overall smoothness of the system.

Benefits of using an original Mercedes differential

The axle from the Mercedes Sprinter W903 family ensures factory-fit compatibility with suspension geometry, mounts, and the drivetrain, which facilitates installation and minimizes the risk of improper fitment. The original differential design guarantees compliance with factory tolerances, which translates into predictable vehicle behavior under load, during engine braking, and while driving with cargo. For workshops and fleets, it is also important that using an axle with a known gear ratio simplifies the selection of other drivetrain components and the calibration of any auxiliary systems.

Characteristics of the 37:9 (4.111) gear ratio

The 37:9 (4.111) gear ratio is a compromise between dynamics and fuel economy, often chosen for commercial vehicles that operate in both urban traffic and on long-distance routes. This configuration:

• facilitates starting with a load and on inclines,
• maintains reasonable engine RPM at cruising speeds,
• promotes stable drivetrain operation under prolonged load.

For the user, this means predictable vehicle behavior under typical operating conditions and the ability to better match driving style to the drivetrain characteristics.

Condition, origin, and service application

The axle comes from disassembly and is offered as a used component, which provides a cost-effective solution while maintaining the manufacturer's original specifications. This type of differential is suitable for both post-accident repairs and replacing a worn-out axle in heavily used Sprinter W903 units. For workshops specializing in delivery vehicles, this is a practical base for further service, including potential refurbishment or adaptation to a specific vehicle configuration.

Matching the gear ratio to driving style – practical knowledge

When choosing a drive axle, it is crucial to match the gear ratio to the vehicle's weight, body type, and typical operating conditions. It is worth considering whether the vehicle is used more frequently in the city, on the highway, or in a mixed cycle, and what typical loads it carries. A detailed discussion on gear ratio selection, differences between configurations, and practical application examples can be found in the article: Dismantled drive axles and differentials – how to choose gear ratios for your driving style.

Expansion and modernization of the Mercedes drivetrain

If you are planning a comprehensive repair or modernization of the drivetrain in your Mercedes and need other components from the same group, such as additional axles, differentials, or complete rear transmissions, check the available parts in the Mercedes Differentials category.

Summary

Mercedes Sprinter W903 Rear Axle Differential Diff with a 37:9 (4.111) gear ratio is a technically refined drivetrain component designed for installation in the vehicle's rear axle. Its original design, properly selected gear ratio, and suitability for professional repairs make it a sensible choice for workshops, fleets, and individual users who expect predictable drivetrain performance and compliance with the manufacturer's factory standards.