BMW E81 E87 LCI 123d N47S Connecting Tube Pipe Turbocharger Turbo 7804640

The BMW E81 E87 LCI 123d Turbocharger Connecting Pipe is an original turbocharger and parts component designed for the facelifted 123d. This OEM part ensures factory fit, stable charge air routing, and consistency with the BMW engine design.

Specifications and technical data

• SKU: 7804640
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7804640
• Substitutable numbers: 11657804640, 7804640, ŁS
• Category: Turbos & Parts

Purpose and function in the supercharging system

The turbocharger connecting pipe is responsible for a tight and stable connection within the turbocharging system in the BMW 1 Series E81/E87 123d LCI. A properly selected component minimizes boost pressure drops, supports smooth engine operation, and helps maintain proper airflow parameters.

Original origin from the BMW range means maintaining the correct geometry, diameters and mounting points, which translates into:

• reliable fit with the turbocharger and other system components,
• stable operation under load and higher temperatures,
• reducing the risk of leaks and unwanted vibrations.

Construction, fitting and assembly

This component falls into the turbocharger and parts category, ensuring it's designed to operate in demanding high-pressure and high-temperature environments. The pipe design is optimized for the specific BMW 123d drivetrain, ensuring proper airflow and compatibility with factory mounts.

A used OEM part is a good solution for users who want:

• maintaining the factory operating characteristics of the turbocharger,
• no need for modifications during assembly,
• consistency with the other components of the original supercharging system.

Condition and benefits of using a used part

The pipe is offered in used condition, allowing for a cost-effective repair of the supercharger system while maintaining original BMW specifications. Compared to aftermarket parts, the OEM part provides:

• factory fit for a specific body and engine version,
• compliance with the operating parameters of the turbocharger,
• maintaining the stiffness and shape of the element as provided by the manufacturer.

This is a practical solution in the event of damage, cracking or wear of the existing pipe, when the priority is to quickly restore the proper operation of the supercharging system without interfering with the vehicle's structure.

Selection, reference numbers and brand

The component comes from the BMW line, making it easy to identify and select based on manufacturer data. The part has an OEM number and interchangeable numbers that allow you to verify compatibility with a specific engine configuration and vehicle year. When selecting, it's recommended to use the manufacturer's markings and the turbocharger and part category to avoid assembly errors.

If you are looking for other components from the BMW turbochargers and parts category, check out the BMW turbochargers and parts available in our store to select components compatible with your car's turbocharging system.

Operation and modernization of the charging system

A functioning turbocharger connecting pipe directly impacts boost pressure stability, throttle response, and engine smoothness. Replacing a worn component with an original, used part is a reasonable compromise between cost and maintaining factory specifications.

If you are interested in a broader context of the use of used components in cars from the BMW/MINI family, it is worth reading the article about the characteristics of the sports versions of the MINI and the possibilities of modifications, available here: MINI John Cooper Works – what makes it special and how to improve your MINI? .