BMW 1 E81 E87 LCI 123d N47S Housing Cover Turbocharger Turbo Part 7804638

BMW E81 E87N 123d Turbocharger Cover is an original component from the turbocharger and parts category, designed to protect the turbocharger assembly in the BMW 1 Series engine. It provides stable mounting and effective isolation of the turbocharger from the surrounding area, which promotes safe and repeatable operation of the turbocharger system.

Specifications and technical data

• SKU: 7804638-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7804638
• Substitutable numbers: 11657804638, 7804638, BG
• Category: Turbos & Parts

Purpose and function of the BMW turbocharger cover

The BMW E81 E87N 123d turbocharger housing cover was designed as a structural component of the turbocharging system in compact BMW models. Its purpose is to:

• stabilization of the turbocharger position relative to other engine components,
• protection of adjacent elements against direct contact with the hot part of the charging system,
• tidying up the engine compartment, which facilitates servicing and diagnostics.

A properly selected cover reduces the risk of unwanted vibrations and improves the durability of components located near the turbocharger.

Construction, fitting and assembly

As a component from the turbocharger and parts group, the cover is structurally matched to the BMW 1 Series 123d drivetrain. This means maintaining the factory mounting geometry and compatibility with the original engine compartment layout.

Key assembly features:

• factory mounting points – the cover works with the mounting points provided by the manufacturer,
• compatibility with the original turbocharger used in the 123d unit,
• maintaining the appropriate distance from temperature-sensitive elements, which contributes to their durability.

This adjustment makes installation easier for mechanics and reduces the risk of incorrect positioning of the cover in relation to the turbocharger and other components.

Characteristics of the BMW used part

The cover offered comes from the original BMW production line and is a used part. This means it retains factory geometry and compatibility with the intended models, while also offering a cost-effective alternative to a new component.

Choosing a used OEM component allows you to:

• maintain structural integrity with the remaining parts of the supercharging system,
• retain the vehicle manufacturer's original engineering solutions,
• optimize repair costs while maintaining correct fit.

This solution is particularly beneficial for complex repairs of the supercharging system, where both quality and control of the service budget are important.

Application in service and operational tuning

The BMW E81 E87N 123d turbocharger cover assembly is suitable for both standard replacement of a damaged cover and for work related to the modernization or regeneration of the turbocharging system. Preserving the original assembly is important for, among other things:

• proper routing of cables and harnesses in the engine compartment,
• maintaining the thermal zones provided by the manufacturer,
• reducing unwanted resonances in the turbocharger area.

This makes the cover an important element in restoring the engine's factory operating parameters after repairs or modifications.

BMW Complementary Turbochargers and Parts

If you're planning a comprehensive turbocharger service and need other turbochargers and parts for BMW, check out our dedicated offer: turbochargers and parts for BMW . This allows you to easily select related components within a single brand and category.

More about car upgrades with used parts

When planning broader car modifications – not just in the area of the supercharging system – it's worth exploring the possibilities offered by proven second-hand parts. Learn how to use used components to improve the ergonomics and appearance of your cabin with the tips in the article: Car Interior Tuning with Global Parts – Second-Hand Seats and Steering Wheels .