Understanding Mercedes-Benz OE (Original Equipment) Part Numbers

Mercedes-Benz OE part numbers are usually 10-digit numeric codes used to identify original components. These numbers follow a consistent structure that can be broken down into parts for better understanding.

Example OE Number: 210 820 02 21
Also commonly written as: A2108200221

1. Structure Breakdown:

• The first three digits (e.g., 210) indicate the model series where the part was originally introduced. For example, 210 refers to the W210 E-Class.

• The middle three digits (e.g., 820) refer to the main component group, such as lighting, electronics, suspension, etc.

• The next two digits (e.g., 02) specify the exact part within that group.

• The final two digits (e.g., 21) represent version, supplier variation, or revisions of the part.

2. Example Explanation: A2043304507

• 204: Refers to W204 C-Class

• 330: Indicates the brake system category

• 45: Represents a specific brake-related part

• 07: Is the version or supplier variant code

3. Common Model Prefix Codes:

• 124 – W124 E-Class

• 202 – W202 C-Class

• 210 – W210 E-Class

• 211 – W211 E-Class

• 204 – W204 C-Class

• 221 – W221 S-Class

• 164 – X164 GL-Class

4. Common Component Group Codes:

• 240 – Transmission

• 320 – Steering

• 330 – Brake system

• 350 – Suspension

• 820 – Electrical components

• 890 – Air conditioning and HVAC

5. Notes:

• A part may start with a certain model code but still fit other Mercedes models.

• Variant numbers often indicate differences in suppliers, colors, connectors, or generations.

• Always check the OE number and vehicle VIN for accurate part matching, especially when purchasing online.