BMW E93 Convertible Folding Hardtop Right Tail O/S Module Hydraulic Cylinder

BMW E93 Convertible Folding Hardtop Right Tail O/S Module Hydraulic Cylinder is a precision component of the folding hardtop system, responsible for the stable and controlled movement of the mechanism. Thanks to the original BMW design and the preservation of the factory geometry, this component ensures proper cooperation with other roof system elements, which translates into safe and predictable operation of the entire system. This is a solution for users who expect consistency with factory specifications and want to restore the full functionality of the folding hardtop.

Specifications and technical data

• SKU: 7183320-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7183320
• Substitutable numbers: 54377183320, 7183320, EM
• Location on the vehicle: Right
• Category: Other Exterior Parts & Accessories

Purpose and function in the roof system

The described cylinder is designed to operate on the right side of the body in the BMW E93 Convertible model with a folding hardtop. Its task is to transfer force from the hydraulic system to the rear module mechanism, which enables smooth opening and closing of the hardtop in the correct sequence.

In practice, this means:

• stable guidance of the movement of the rear roof section elements,
• maintaining proper synchronization with other cylinders,
• reducing unwanted play and vibrations during mechanism operation.

As a result, the roof folding system can operate in a predictable manner, in accordance with the manufacturer's assumptions, which is important for both comfort and the durability of the entire system.

Technical characteristics and compatibility

The cylinder was designed as an original BMW part, which ensures full compatibility with the factory hydraulic system and proper operating parameters in terms of pressure and stroke. The design is intended for cooperation with the rear section module of the folding hardtop, without the need for modifications to the vehicle's installation.

Key features include, among others:

• dedicated placement on the right side of the vehicle,
• compatibility with factory hydraulic line routing,
• preservation of original mounting points in the body and roof module.

Thanks to this, the installation can be carried out in a manner similar to the manufacturer's service procedures, while maintaining the correct operating position of the cylinder.

Condition, origin, and service application

The offered element is a used part, sourced from dismantling, which allows for an economical repair of the roof system while maintaining original BMW specifications. Such components are particularly useful in the case of:

• repairs after hydraulic system failure or leaks,
• mechanical damage to the rear module during roof operation,
• restoring system efficiency after errors in the opening/closing sequence.

Using an original cylinder allows for reducing the risk of fitment issues that may occur with parts inconsistent with the factory design.

Benefits of using the original hydraulic cylinder

Choosing this component is a solution aimed at users who want to keep the roof system in a configuration close to the factory one. The main advantages include:

• consistency with the BMW E93 Convertible design – maintaining the original operating parameters of the system,
• reduced risk of leaks thanks to matched hydraulic connections,
• proper cooperation with the control module and other roof cylinders.

This approach is particularly important in the case of complex systems, such as a folding hardtop, where every element affects the correctness of the entire movement sequence.

Related categories and technical materials

If you are planning a comprehensive repair or upgrade of the rear body area and roof system in your BMW and need other elements from the same group, such as additional modules, cylinders, or mounting elements, check the available parts in the Other BMW category.

If you are interested in comparing technical solutions used in sports versions of cars and want to better understand the differences in the construction of the drivetrain, brakes, and chassis, read the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses key design aspects in an accessible way.

In case of doubts related to choosing elements from the secondary market, it is also worth reading the material Used car parts: Myths and facts you need to know, which organizes the most common opinions about components from dismantling and helps to consciously approach the selection of parts.