Brake Disc Plate Mercedes W176 W246 Rear Left N/S Protection Plate A2464230420

Mercedes W176 W246 Brake Disc Left Rear is an original part from the brake discs category, designed for installation on the rear left axle in selected Mercedes compact class models. A used OEM part helps maintain factory braking characteristics, ensuring consistency with other brake system components.

Specifications and technical data

• SKU: A2464230420
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2464230420
• Substitutable numbers: A2464230420, A 246 423 04 20
• Location on the vehicle: Rear, Left
• Category: Brake Disc Rotors

Vehicle Application and Fitment

This disc is designed as a brake system component mounted on the rear left side of the vehicle. Due to its original manufacturer origin, it retains correct dimensions, offset, and working surface geometry, which facilitates installation and reduces the risk of issues like runout or uneven pad wear.

Selecting an original disc for the specific axle and side of the vehicle is crucial for maintaining braking stability, proper functioning of assistance systems (ABS, ESP), and even distribution of braking forces between wheels.

Technical and Constructional Characteristics

As an OEM component, the brake disc is made from materials with parameters selected by Mercedes engineers, which translates to predictable performance across a wide temperature range. The construction is optimized for:

• dimensional stability during repeated heating and cooling cycles,
• resistance to thermal cracking and deformation,
• proper cooperation with factory-specified brake pad compounds.

The precisely machined working surface of the disc promotes even pad contact, which reduces brake pedal vibrations and improves user comfort.

Benefits of Using an Original Brake Disc

Using an original disc on the rear axle, on the left side, helps maintain the integrity of the entire braking system. Key benefits include:

• Factory Fitment – no modifications required, compatibility with the hub, caliper, and mounting hardware.
• Predictable Braking Performance – maintaining parameters close to factory specifications, which is important during emergency braking.
• Compatibility with Safety Systems – correct interaction with the vehicle's electronics, which have been calibrated for original components.

A used brake disc can be an attractive solution for budget-conscious repairs or restoring a vehicle's functionality while retaining original components.

Professional Selection and Installation

Before installation, it is recommended to verify the condition of the working surface, minimum thickness, and any signs of overheating. In workshop practice, when replacing a disc on the rear axle, it is often recommended to:

• check the condition of the brake pads and caliper guides,
• clean the hub surface of corrosion and dirt,
• check for play in the wheel bearing and suspension components.

This approach allows for the full utilization of the installed disc's potential and reduces the risk of subsequent vibrations or uneven wear.

More Brake Discs for Mercedes

If you are looking for other Mercedes brake discs suitable for various models and engine versions, check out our dedicated category: Mercedes brake discs. There you will find a wide selection of original brake system components for vehicles of this brand.

How to Safely Buy Used Brake System Components?

When choosing a used brake disc, it is worth knowing the basic criteria for assessing its technical condition, such as working thickness, evenness of wear, or the presence of scratches and cracks. A detailed list of aspects to consider when purchasing used discs, calipers, and ABS components can be found in the article: Second-hand braking system: how to safely choose discs, calipers, and ABS?. This provides practical knowledge for planning brake system repairs or upgrades.