BMW E91 Parcel Shelf Actuator Compartment Rear Left N/S Motor Boot 9918004051

BMW E91 Parcel Shelf Actuator Compartment Rear Left N/S Motor Boot is a specialized actuator designed to operate the luggage compartment cover in 3 Series estate models. This component is responsible for the smooth, controlled retraction and extension of the load area cover, which translates into daily convenience and interior aesthetics. Thanks to a design consistent with BMW factory solutions, the motor ensures precise operation of the parcel shelf mechanism and proper mounting fitment on the left side of the vehicle's rear section.

Specifications and technical data

• SKU: 9918004051
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9918004051
• Substitutable numbers: 9918004051, 9 918 0 04051, KD
• Location on the vehicle: Rear, Left
• Category: Parcel Shelves

Purpose and function in the luggage compartment system

The BMW E91 Parcel Shelf Actuator Compartment Rear Left N/S Motor Boot operates in the rear zone of the vehicle, on the left side, working in conjunction with the guides and the cover retraction mechanism. Its task is to generate the appropriate torque to drive the parcel shelf so as to:

• ensure even retraction of the cover material,
• maintain stable mechanism operation throughout the full range of motion,
• minimize the risk of jamming and uneven tension,
• maintain the correct position of the parcel shelf while driving.

Thanks to its adaptation to the specific location in the vehicle, the component works with factory mounting points and wiring, which facilitates service and reduces the time required for replacement.

Construction and fitment for BMW

The motor has been designed as a component dedicated to the luggage compartment cover system in BMW, maintaining the geometry and interfaces typical for this series. This means:

• compatible mountings in the rear left part of the body,
• designed connection with the luggage compartment parcel shelf mechanism,
• adaptation to work in conditions typical for the load area (temperature changes, vibrations, operational loads).

Such a solution allows for maintaining consistency with the factory BMW construction and limits the need for modifications to other luggage compartment trim elements.

Condition, application, and benefits of replacement

The offered parcel shelf motor comes from the Parcel shelves and luggage covers group and is intended for installation in the rear left part of the vehicle. As a used component, it provides an economical service solution for users who want to restore full functionality of the luggage cover without the need to invest in a new mechanism set. Replacing a damaged actuator with a functional unit allows you to:

• regain the convenience of using the luggage compartment parcel shelf,
• maintain order and discretion in the load area,
• preserve the original character of the BMW interior finish.

Thanks to maintaining compliance with the factory solution, the installation proceeds in an orderly and predictable manner for an experienced service center.

Support in selection and expanding knowledge about BMW

If you want to better understand the specifics of the construction and operation of BMW power units and the impact of choosing aftermarket parts on vehicle maintenance costs, it is worth reaching for expert material – check out the article BMW N47 vs M57 / M57N / M57N2 – ranking of legendary diesels, which discusses the performance, reliability, and service economy of popular engines.

Other elements from the BMW luggage cover group

If you are planning a comprehensive repair or modernization of the luggage compartment area in your BMW and need other elements from the same group, such as guides, complete parcel shelves, or additional mountings, check the available parts in the BMW Parcel shelves and luggage covers category.