Mercedes W414 Brake Disc Splash Guard Cover Rear Left N/S A1684203115

Mercedes W414 Rear Brake Disc Shield Left A1684203115 is a precisely designed protective component for the braking system, dedicated to the rear left side of the vehicle. This used, original shield provides stable protection for the disc against contaminants, supporting uniform brake operation and improving the durability of the entire system. Thanks to factory fitting, installation is predictable, and the component maintains the correct geometry relative to other components.

Specifications and technical data

• SKU: A1684203115
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1684203115
• Substitutable numbers: A1684203115, A 168 420 31 15, A1684230120, A 168 423 01 20
• Location on the vehicle: Rear, Left
• Category: Splash Guards & Mud Flaps

Purpose and Technical Function

The rear left brake disc shield in Mercedes W414 models plays a crucial role in protecting the working surface of the disc from water, mud, road salt, and small stones. This reduces the risk of accelerated corrosion and uneven wear, leading to more stable braking performance in daily use.

The component has been specifically designed for installation on the rear left axle, which guarantees proper cooling airflow and maintains the correct distance from the disc and caliper. The shield's design works with the factory braking system and does not require modifications or adaptations.

Construction and Mounting Fit

The shield is constructed as a rigid, stable element mounted to the steering knuckle in the rear suspension area. The shape and mounting points correspond to the factory solutions used by Mercedes, which facilitates installation and ensures correct positioning relative to the brake disc.

• dedicated placement on the vehicle: rear – left side,
• designed to operate in close proximity to the disc and caliper,
• profile matched to the geometry of the suspension and hub.

By maintaining the original geometry, after correct installation, the shield does not rub against the disc, does not generate additional vibrations, and does not negatively affect the operation of the braking system.

Benefits of Using an Original Shield

Using the correct brake disc shield on the rear left side of the vehicle brings tangible operational benefits:

• better protection of the disc against external factors and dirt,
• reduced risk of mechanical damage from small stones,
• more stable operating conditions for pads and disc in varying weather conditions,
• consistency with the factory design of the Mercedes braking system.

A used component allows for economical repair while maintaining the original manufacturing standard, which is particularly important for vehicles where compliance with factory specifications is crucial.

Mounting Zone: Rear – Left Side of the Vehicle

The shield is intended for installation in the rear left part of the braking system. Correct placement on the vehicle is key to maintaining the proper distance from the disc, effective contaminant removal, and proper cooling airflow. Installation should be performed using the factory mounting points and recommended service procedures.

Compatibility and Reference Numbers

This part belongs to a group of components for which dedicated OEM numbers and interchangeable numbers are available, facilitating verification of compatibility with specific vehicle versions. Before purchasing, it is advisable to compare the markings with the service documentation or the existing component in the car to confirm full compatibility.

Extension of the Protective System and Service Knowledge

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other parts from the same group, such as shields, additional protective screens, or dirt protection elements, check the available parts in the Mercedes Mud Flaps category.

When planning service work, especially before the winter season, it is worth paying attention to the condition of protective elements in the brake and wheel arch areas. Practical tips on assessing wear and selecting used components can be found in the article Winter Essentials: Which Used Car Parts Are Worth Checking and Replacing Before the Frost?.