BMW 3 Series E90 E91 Decorative Strip Trim Panel Cover Rear Left N/S Diamant

BMW 3 Series E90 E91 Decorative Strip Trim Panel Cover Rear Left N/S Diamant is an original body trim component designed for installation on the rear left side of the vehicle. Featuring a Diamond Black / Diamantschwarz finish and a High gloss surface, this trim allows you to maintain a consistent, elegant factory look and aesthetically complete the side body line.

Specifications and technical data

• SKU: 9171791
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9171791
• Substitutable numbers: 51429171791, 9171791, 7121477, High gloss, Diamantschwarz, Diamond Black
• Location on the vehicle: Rear, Left
• Category: Other Interior Parts & Accessories

Purpose and fitment for BMW 3 Series E90/E91

The presented decorative strip has been designed specifically for BMW 3 Series E90/E91 models, taking into account the body geometry and factory mounting points. Its placement on the vehicle is the rear left side, which ensures proper fitment with other body panels and maintains the original side profile.

Thanks to the use of the original mounting profile, the component works perfectly with factory clips and seals, which reduces the risk of stress, rattling, or leaks in the rear body area.

High gloss Diamantschwarz / Diamond Black finish

The trim features a High gloss finish in Diamantschwarz / Diamond Black, characteristic of BMW styling packages. This type of paint provides:

• visual consistency with other decorative elements in the same color,
• a modern, contrasting look against the body paint,
• easier maintenance of aesthetics – the surface responds well to standard care procedures.

This solution is particularly beneficial when replacing a damaged trim, as it preserves the original character of the vehicle without the need for modifications or fitting universal replacements.

Characteristics of the used component

The decorative strip is a used original BMW component, which in practice means factory-grade fitment and compatibility with the production line of the given model. Unlike many aftermarket replacements, the original component retains the correct rigidity, shape, and mounting method, which translates into a stable fit on the bodywork.

Choosing a used OEM component is a cost-effective solution that also allows for maintaining visual and technical consistency with other body panels, especially for vehicles where preserving the original specification is important.

Application in body repairs and restoration

The rear left decorative strip is suitable for both local post-collision repairs and broader restoration of the side body section. The component allows you to:

• restore the factory side line after mechanical damage,
• replace a missing or deformed decorative panel,
• restore a consistent look to the rear zone after painting or replacing other body elements.

Thanks to the original design, installation is predictable and does not require body modifications, which is essential for professional body and paint repairs.

Expanding BMW body upgrades

If you are planning a comprehensive repair or upgrade of the side body zone in your BMW and need other elements from the same group, such as additional strips, covers, or trim panels, check out the available parts in the Other BMW category.

For a comparison of manufacturer approaches to standard and sports versions, and a better understanding of the differences in construction and equipment, it is worth reading the guide Audi RS vs other models – what is hidden under the hood and chassis?, which shows how changes in body, suspension, and drivetrain elements affect the character of the car.