BMW 1 Series E81 E82 E87 E87N E88 Bonnet Reinforcement Lock Support 7123405

BMW E81 E87 E88 Lock Reinforcement 7123405 is an original structural component designed for the front body section, responsible for the stable mounting and proper operation of the lock mechanism. Thanks to its factory geometry and precise fit for the BMW 1 Series platform, this part ensures secure hood closure and predictable behavior of the front elements. A used OEM component is a sensible choice for post-accident repairs, alignment corrections, or restoring the factory rigidity of the vehicle's front end.

Specifications and technical data

• SKU: 7123405
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7123405
• Substitutable numbers: 51647123405, 7123405, 1857927000, 7927000
• Location on the vehicle: Front
• Category: Other Exterior Parts & Accessories

Purpose and Function of the Lock Reinforcement

The lock reinforcement in BMW E81, E87, and E88 models operates in the front body zone, connecting structural elements to the hood lock mechanism. It is responsible for:

• maintaining the correct position of the lock relative to the hood,
• stabilizing loads acting on the vehicle's front during driving,
• reducing play and vibrations in the hood closure area,
• preserving the correct gap alignment between the hood, fenders, and bumper.

This ensures that the BMW front end remains rigid and predictable, and the hood closes with appropriate force without requiring excessive pressure.

Compatibility and Fit for BMW 1 Series

This component has been specifically designed for the BMW 1 Series E81, E87, and E88 generations, resulting in a precise fit to the factory mounting points in the front body section. This means:

• no need for modifications to mounting holes or custom adapters,
• compatibility with the original hood lock mechanism is maintained,
• easier restoration of factory settings after body repairs.

Its original BMW origin promotes structural integrity of the entire front end and facilitates service work during subsequent adjustments.

Characteristics of a Used Part

The lock reinforcement presented is a used part, sourced from disassembly. Such structural components, when maintaining their correct geometry, serve very well as replacements for vehicles involved in collisions or for replacing worn mounting elements. In practice, this means:

• maintaining original rigidity in the lock mounting area,
• economical repairs without compromising on OEM parts,
• easier adjustment of the hood's position relative to the body.

For workshops and individual users, this is a solution that combines cost control with the preservation of original BMW construction.

Importance of Correct Installation in the Vehicle's Front Zone

The placement of the reinforcement in the front of the car means that its correct installation directly impacts everyday driving comfort. A properly positioned element:

• ensures repeatable, secure hood latching,
• reduces the risk of accidental incomplete closure,
• helps maintain a uniform body line in the front zone.

Combined with proper adjustment of the lock and hood hinges, this results in stable, predictable behavior of the entire front body section.

If you are planning a comprehensive repair or upgrade of the front structural zone in your BMW and require other elements from the same group, such as additional brackets, holders, or mountings, check the available parts in the Other BMW category.

Technical Support and Parts Knowledge

When selecting structural components for the BMW 1 Series, it is advisable to rely on proven sources of information and quality comparisons. To better understand the differences between factory components and other solutions available on the market, an article describing the characteristics of sports constructions and their components may be helpful – you can find it here: Audi RS vs. Other Models – What Lies Under the Hood and Chassis?.

If you are considering the choice between new and used structural elements and want to consciously assess the cost-effectiveness of purchasing OEM parts from disassembly, it is worth familiarizing yourself with the cost and durability analysis in the material: New or Used? A Comparison of Car Part Costs and Quality.