Mercedes Sprinter W901 W903 Accelerator Throttle Pedal A9013000404

Mercedes Sprinter W901 W903 Accelerator Throttle Pedal is a component from the Leaf springs and suspension springs group, designed for the front suspension of Mercedes W901–W903 series commercial vehicles. It is responsible for controlled limitation of spring deflection, improving body stability and ride comfort under heavy loads. Thanks to its factory design, it works perfectly with the front leaf spring, ensuring predictable vehicle behavior in difficult operating conditions.

Specifications and technical data

• SKU: A9013000404
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A9013000404
• Substitutable numbers: A9013000404, A 901 300 04 04
• Location on the vehicle: Front
• Category: Leaf & Coil Springs

Function and role of the leaf spring bump stop in the suspension

The leaf spring bump stop in Mercedes W901 and W903 models plays a key protective role for the front suspension. It limits extreme spring deflection, protecting metal components from direct contact and reducing the stress transferred to the frame and body. In practice, this translates into more predictable vehicle handling, especially when driving with a load, on uneven surfaces, or during sudden braking.

A properly selected and functional leaf spring bump stop also helps reduce noise and vibrations transferred to the cabin, which is important in the daily operation of commercial vehicles. Replacing a worn-out element with the correct component dedicated to this body series allows for the restoration of the original suspension performance parameters.

Purpose and placement on the vehicle

The presented bump stop is intended for installation in the front suspension area, where it works with the spring responsible for carrying the front axle load. Such placement requires a properly selected operating characteristic – the element must effectively dampen extreme deflections while not restricting the normal operation of the spring under typical driving conditions.

Being dedicated to the W901–W903 series means it is matched to the suspension geometry of these models, which facilitates installation and ensures correct positioning relative to the spring and mounting points on the frame. As a result, the bump stop works with the spring in a repeatable and predictable manner, without the need for vehicle structure modifications.

Benefits of using an original leaf spring bump stop

Using a leaf spring bump stop that complies with the factory specification in Mercedes W901 and W903 vehicles brings a number of practical operational benefits:

• more stable vehicle behavior under maximum front axle load,
• better protection of the spring and mounting elements against mechanical overload,
• limitation of extreme suspension deflections, which affects driving safety,
• reduction of the risk of damage resulting from suspension bottoming out on large bumps.

For commercial vehicles that often operate in difficult conditions and under high loads, maintaining the efficiency of elements from the Leaf springs and suspension springs group has a direct impact on the durability of the entire chassis and the driver's comfort.

Product characteristics and condition

The leaf spring bump stop offered in this listing comes from a Mercedes vehicle and is a used part, which is a typical solution for many suspension components for commercial vehicles. Such parts, when maintained in good working order, allow for economical chassis repair while maintaining proper operating parameters.

Choosing a used leaf spring bump stop is particularly beneficial in situations where the priority is to maintain the original suspension design and fitment for a specific body series, without the need to use replacements with uncertain characteristics.

Expansion and service of the Mercedes W901–W903 suspension

If you are planning a comprehensive repair or upgrade of the front suspension area in your Mercedes and need other elements from the same group, such as leaf springs, auxiliary springs, or mounting elements, check the available parts in the Mercedes leaf springs and suspension springs category.

For users who intensively operate commercial vehicles, it is also important to take care of other key vehicle systems, including the engine cooling system, which has a direct impact on the durability of the power unit. To learn more about the symptoms of overheating, diagnostic methods, and the importance of functional radiators, it is worth reading the article: Engine cooling system – overheating, repair, and used radiators.