BMW E60 E81 E87 E90 E92 Boot Tailgate Trunk Lid Lock 7840617

The BMW E60 E81 E87 E90 E92 Trunk Lock is an original part from the Trunk Lid and Rear group, designed for installation in the rear body section. It ensures secure locking of the trunk lid, proper cooperation with the opening mechanism, and stable closure of the lid during daily use. Thanks to its factory OEM design, the lock maintains the correct mounting geometry and works with the vehicle's factory electrical solutions.

Specifications and technical data

• SKU: 7840617-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7840617
• Substitutable numbers: 51247840617, 7840617, 51248196401, 8196401
• Location on the vehicle: Rear
• Category: Boot & Hatch Lids

Purpose and Function of the BMW Trunk Lock

The presented lock is a component intended for the rear body section, responsible for the mechanical locking of the trunk lid and its stable retention in the closed position. The lock's design has been developed to cooperate with the factory trunk latch, actuators, and control system, which translates into repeatable, predictable operation with every opening and closing.

In BMW vehicles of the E60, E81, E87, E90, and E92 series, a properly functioning trunk lock is important not only for user comfort but also for the security of the transported cargo – it reduces the risk of accidental lid opening while driving and minimizes play that could cause noise or vibrations.

Construction and Body Fitment

The trunk lock in this version is an OEM component, specifically designed for BMW platforms from the E family. This means that:

• the mounting geometry is adapted to the factory mounting points in the rear body section,
• the mechanism cooperates with the original trunk latch and guides,
• the construction is designed to operate in typical conditions for the rear body zone (moisture, temperature changes, road dirt).

This allows the lock to be installed in a manner similar to factory installation, without the need for bodywork modifications or mounting adaptations. Proper body fitment also reduces stress on the lid, promoting even closing and a longer lifespan for the entire assembly.

Benefits of Using an Original BMW Lock

Choosing an original BMW trunk lock offers a number of practical benefits for daily vehicle use:

• Consistency with the Factory System – the lock is designed to work with original body components and the control system, promoting seamless mechanism operation.
• Stable Locking – a correctly selected lock reduces the risk of the lid not closing properly, accidental opening, and play in the rear body section.
• Maintaining Factory Operating Parameters – using an OEM part allows for the retention of closing characteristics and the force required to close the lid at a level similar to factory-installed solutions.
• Better Cooperation with Seals and Hinges – the correct lock geometry facilitates lid adjustment to ensure even pressure on the seals and prevent excessive stress on the hinges.

Condition, Verification, and Service Application

The offered lock comes from a BMW vehicle and is a used part, meaning it has undergone operation in real road conditions. This type of part is often chosen as a service solution in situations where the factory lock has become worn, mechanically damaged, or no longer locks the lid properly. Replacing it with an original part from the same model group allows for the restoration of correct mechanism operation without the need for aftermarket alternatives with uncertain fitment.

Before installation, standard service procedures are recommended: checking the condition of the latch on the lid, adjusting the lid's position relative to the body, and verifying the operation of actuators and hinges. This ensures that the newly installed lock can operate under optimal conditions, and the entire rear body section maintains proper rigidity and sealing.

Expanding the Rear Zone in BMW – Related Components

If you are planning a comprehensive repair or upgrade of the rear zone in your BMW and need other parts from the same group, such as trunk hinges, gas struts, or additional lid mountings, check the available parts in the BMW Trunk Lid and Rear category.

For users who are simultaneously servicing other vehicle systems – especially those affecting driving comfort – a guide on selecting and operating air conditioning and heating system components may be helpful. Practical tips, comparison tables, and service procedures can be found in the article Air Conditioning and Heating – Part Selection and Maintenance for Year-Round Comfort.