Mercedes C140 Brake Pedal Automatic Assembly Unit A1402903318

Mercedes C140 Brake Pedal Automatic Assembly Unit is a specialized component of the parking brake control system, designed for vehicles with an automatic transmission. It enables precise transfer of force from the pedal to the brake mechanism, ensuring stable immobilization of the vehicle. Thanks to a design consistent with Mercedes factory solutions, the part maintains the correct operating geometry and supports safe vehicle operation.

Specifications and technical data

• SKU: RHD-A1402903318
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1402903318
• Substitutable numbers: A1402903318, A 140 290 33 18
• Gearbox type: Automatic
• Category: Pedal Assemblies, Pads & Parts

Purpose and function in the braking system

Mercedes C140 Brake Pedal Automatic Assembly Unit is responsible for the mechanical operation of the parking brake via the pedal in the cabin. This component:

• transfers the driver's foot pressure to the parking brake mechanism,
• stabilizes the pedal position during parking,
• works with the braking system designed for automatic transmission,
• ensures a repeatable, predictable pedal travel.

Thanks to appropriately selected pivot points and gear ratios, the lever allows for comfortable force modulation, which translates into ease of operation and secure locking of the vehicle when parked.

Compatibility with automatic transmission

The presented element has been designed to work with an automatic transmission, which is important for both ergonomics and safety. In such systems, the parking brake plays a significant role every time the vehicle is stopped and parked, which is why the correct operation of the assembly unit is crucial for:

• keeping the vehicle in place when in "P" mode,
• reducing the load transferred to the automatic transmission,
• ensuring a repeatable parking brake engagement point.

Proper cooperation with the automatic transmission mechanics promotes a longer service life for the entire drivetrain and braking system.

Category: Pedals, pedal pads and footrests

The product belongs to the Pedals, pedal pads and footrests group, which are elements responsible for the physical contact between the driver and the vehicle. The proper condition and design of these components affect:

• ergonomics of parking brake operation,
• repeatability of pedal movement and force feedback,
• stability of the system over a long period of operation.

Using an original design dedicated to Mercedes allows for maintaining factory pedal operating parameters and consistency with other elements in this group.

Characteristics of the used component

The offered assembly unit is a used part, which is a beneficial solution for users looking for a technically sound component at a reasonable price. In practice, this means:

• preservation of original geometry and mounting points,
• possibility of installation in place of the factory element without interfering with the vehicle's structure,
• attractive cost-to-functionality ratio compared to new aftermarket replacements.

For many users of Mercedes C140 series, choosing a used Mercedes C140 Brake Pedal Automatic Assembly Unit is a reasonable compromise between quality and service budget.

Support with selection and system expansion

If you are planning a comprehensive repair or upgrade of the brake control area in your Mercedes and need other elements from the same group, such as pedals, pads, or footrests, check the available parts in the Pedals, pedal pads and footrests Mercedes category.

If you are considering a wider use of used parts in your vehicle fleet and want to better understand their economic advantages, it is worth reading our guide: Smart Skoda servicing – why second-hand parts are the best choice for your wallet. Although it concerns a different brand, it presents universal arguments in favor of making an informed choice of second-hand components.