BMW X3 Series E83 LCI Bumper Left Cover Lateral N/S 51123400997 3400997

BMW X3 Series E83 LCI Bumper Left Cover Lateral N/S is an original body component from the Bumper inserts and covers group, designed for installation on the left side of the vehicle. It ensures proper coverage of the bumper structure, supports stable mounting of adjacent components, and helps maintain the consistent geometry of the front bodywork. This is a practical solution for users who want to restore the factory layout of components in a BMW X3 E83 after a collision, body repair, or bumper replacement.

Specifications and technical data

• SKU: 3400997
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3400997
• Substitutable numbers: 51123400997, 3400997
• Location on the vehicle: Left
• Category: Bumper Inserts & Covers

Purpose and function of the component

The presented cover is dedicated to the BMW X3 E83 generation model and acts as the left insert of the bumper structure. Its tasks include:

• stabilizing the bumper skin section on the left side of the vehicle,
• protecting internal components from direct exposure to external factors,
• maintaining correct gaps and connection lines between the bumper and adjacent panels.

Thanks to this, the bumper retains its proper shape, and the entire front part of the body remains visually and structurally consistent.

Construction and mounting fitment

The cover has been designed as a part compliant with BMW factory standards, which translates into precise fitment to the mounting points on the left side of the vehicle. The design provides for proper guidance of the bumper edges and cooperation with adjacent body elements, which facilitates correct alignment during body and paint repairs.

The placement on the left side allows for clear identification of the component's position in the vehicle and reduces the risk of errors when selecting parts. This is particularly important for repairs where maintaining factory geometry and assembly repeatability is essential.

Performance characteristics and benefits

As an element from the Bumper inserts and covers group, this cover supports not only aesthetics but also the functionality of the vehicle's front end. Key benefits include:

• the ability to restore the original bumper alignment after repair,
• reduction of unwanted vibrations and play within the mounting area,
• better protection of internal components located behind the bumper.

The product in used condition is a reasonable choice for drivers looking for a technically sound solution while keeping repair costs under control. Maintaining the original BMW construction promotes compatibility with existing body elements and facilitates service work.

Application in the BMW X3 E83 repair process

The bumper cover on the left side will prove useful both for local replacement of a damaged fragment and for broader reconstruction of the vehicle's front end. It can be used in:

• post-accident repairs,
• replacing the bumper with a part in a different color or after painting,
• correcting body alignment after previous, imprecise repairs.

By maintaining factory geometry, the component helps achieve even gaps between the bumper and the fender, headlight, or other panels, which is significant both visually and technically.

Complementary BMW Bumper inserts and covers

If you are planning a comprehensive repair or upgrade of the bumper zone in your BMW and need other elements from the same group, such as additional inserts, covers, or internal mounting panels, check the available parts in the BMW Bumper inserts and covers category.

For drivers interested in a broader approach to selecting used components, including elements affecting safety, a guide describing the principles of selecting parts from the secondary market may be useful – you can find it in the article Second-hand braking system: how to safely choose discs, calipers, and ABS?, which shows best practices when purchasing used sub-assemblies in specialized stores.