BMW G20 G21 Rear Bumper Carrier Crash Support Reinforcement Bar TS742802109

The BMW G20/G21 Rear Bumper Reinforcement Bar is a crucial structural component responsible for absorbing energy during rear-end collisions. This genuine bumper carrier, designed for installation at the rear of the vehicle body, provides stable support for the bumper cover and maintains the correct geometry of the impact zone. Due to its factory specifications, it is a particularly beneficial solution for post-accident repairs and precise body structure reconstruction.

Specifications and technical data

• SKU: 7428021
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7428021
• Substitutable numbers: 7428021, 51127428021, TS742802109
• Location on the vehicle: Rear
• Part type: Bumper Reinforcement Beam
• Category: Bumpers & Reinforcements

Purpose and Function in the Vehicle

The rear bumper reinforcement bar for the BMW 3 Series G20/G21 operates within the impact zone located at the rear of the vehicle. Its functions include:

• transferring impact loads from the bumper cover to the body structure,
• maintaining the correct position of the rear bumper relative to the fenders and trunk lid,
• cooperating with other reinforcement elements to limit damage in lower-energy collisions.

By preserving the factory geometry, the bar ensures proper alignment of body components, facilitating the adjustment of gaps and restoring the aesthetic appeal of the rear of the car.

Construction and Fitment for BMW G20/G21

The offered part belongs to the Bumpers and Reinforcements group, meaning it is designed as an integral part of the rear body protection system. The carrier's construction is adapted to the mounting points in the BMW G20 and G21, ensuring installation using factory holes and brackets without the need for modifications.

The bar is compatible with original bumper mountings, which simplifies the work for bodywork specialists and mechanics, and reduces the risk of fitment issues with the cover. Maintaining proper structural rigidity also contributes to the correct functioning of other rear body components, such as brackets, guides, and covers.

Characteristics of a Used Component

The offered bumper carrier is a used part, which translates into a favorable combination of original specifications and an attractive price compared to new components. Such parts are often chosen for post-accident repairs where maintaining the factory structure while optimizing service costs is important.

For reinforcement bars, it is particularly crucial that the component retains its geometry and the ability for correct installation. A used OEM component allows for the restoration of the original impact zone layout without compromises in fitment.

Application in Bodywork and Mechanical Repairs

The BMW G20/G21 rear bumper reinforcement bar is ideal for workshops specializing in post-accident repairs, as well as for individual body reconstruction projects. It can be used, among other applications, for:

• replacing a damaged rear bar after a collision,
• comprehensive reconstruction of the rear body after a significant impact,
• correcting bumper alignment when the original carrier has been deformed.

Using an original reinforcement ensures predictable behavior of the impact zone and simplifies subsequent adjustment work during the installation of the bumper and adjacent components.

Complementary Parts and Additional Information

If you are planning a comprehensive repair or upgrade of the rear bumper area on your BMW and need other parts from the same group, such as additional reinforcements, brackets, or cross beams, check the available parts in the BMW Bumpers and Reinforcements category.

To better plan repairs and reduce vehicle downtime at the workshop, it is worth familiarizing yourself with practical tips on using a wide range of used parts – you can find more on this topic in the article No More Weeks of Waiting – How a Wide Range of Parts in One Warehouse Can Actually Reduce Your Car's Downtime at the Mechanic?.