Description
The BMW E90 LCI F20 N55 Turbocharger Mounting Cover is an original turbocharger and parts item designed for the N55 engines in the BMW E90 LCI and F20 models. This used, factory mounting cover provides proper support for the turbocharger and stabilizes its position relative to the exhaust system and engine accessories.
Specifications and technical data
- SKU: 7588579
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 7588579
- Substitutable numbers: 11657636424, 7636424, 11654577236, 4577236
- Category: Turbos & Parts
Purpose and function of the turbocharger mounting cover
The BMW turbocharger mounting cover for the N55 engine is responsible for stable, repeatable positioning of the turbocharger relative to the manifold and other turbocharger components. A properly selected, original component reduces unfavorable stresses that can occur under the high temperatures and loads typical of turbocharged engines.
Proper mounting is important for:
- maintaining the tightness of connections within the turbocharger,
- reduction of vibrations transferred to the turbo body and adjacent components,
- stable operation of the charging system in the full speed range,
- reducing the risk of mechanical damage resulting from looseness or misalignment.
Genuine BMW part – fits E90 LCI and F20 N55
As an original BMW component from the turbocharger and parts category, the cover is designed specifically for the geometry of the N55 engine and engine compartment in the E90 LCI and F20 models. This means maintaining the factory mounting points, correct shape, and compatibility with the stock exhaust system and accessories.
In practice, this translates into:
- easier installation without the need for modifications,
- secure fit with the turbocharger and adjacent components,
- maintaining factory tolerances and manufacturer’s design assumptions.
Used condition – a conscious choice when repairing
This BMW turbocharger mounting cover is in used condition, representing a reasonable compromise between repair costs and maintaining original build quality. These types of components, when properly maintained, retain their performance characteristics for a long time, so choosing a proven used part is often technically justified.
If you’re considering whether remanufacturing or installing an original part from a disassembly is the better option, it’s worth checking out our guide: Remanufactured or Used Original – Which Part to Choose for Repair? This will allow you to choose the right service strategy for your specific situation and budget.
Benefits of using the original turbocharger mounting cover
Using the factory mounting cover on the BMW N55 supercharger system brings a number of practical benefits:
- compliance with the manufacturer’s design – maintaining the rigidity and mounting geometry provided by BMW,
- reducing the risk of leaks and unwanted stresses within the turbocharger,
- stable turbo operating conditions under high thermal and mechanical loads,
- no need to adapt or fit replacements with uncertain geometry.
Other turbochargers and parts for BMW
If you’re also looking for other turbochargers and parts for BMW, check out our dedicated catalog: turbochargers and parts for BMW . This will make it easy to assemble the remaining components of your turbocharger system while maintaining consistency in quality and source.
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