BMW E60 E61 E90 E91 335d 535d M57N2 Housing Cover Part Turbocharger Turbo

The BMW E60 E61 E90 E91 335d 535d M57N2 turbocharger housing is an original turbocharger component designed for the M57N2 engine in powerful BMW diesel engines. This used, fully genuine part from the turbocharger and accessory category provides a solid foundation for turbocharger repair or reconditioning.

Specifications and technical data

• SKU: 7811404-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7811404
• Substitutable numbers: 11657811404, 7811404, 11657802588, 7802588, K26-2871, K262871, KZ
• Category: Turbos & Parts

Purpose and function of the turbocharger housing

The hot end housing of the M57N2 turbocharger is responsible for the proper routing of exhaust gases to the turbine wheel and for the stable mounting of the entire assembly to the exhaust manifold and exhaust system. In BMW 3 and 5 Series models with 335d and 535d engines, it is a key element ensuring:

• appropriate exhaust flow geometry in the charging system,
• proper positioning of the turbocharger relative to the manifold and downpipe,
• stable transfer of thermal and mechanical loads.

By maintaining the factory housing geometry, it is possible to maintain the standard operating parameters of the turbocharger and ensure correct cooperation with other components of the charging system.

Compatibility with BMW models

This BMW M57N2 turbocharger housing is designed for use in popular E60, E61, E90, and E91 models in 335d and 535d versions. This means that the design, mounting points, and exhaust port shape are consistent with the manufacturer's factory specifications.

Selecting the right housing is particularly important when:

• turbocharger regeneration in high-performance diesel engines,
• repairs after mechanical or thermal damage,
• restoring the stock configuration of the supercharging system after modifications.

The original BMW design allows for proper fitment with the exhaust manifold, oil and cooling lines, and exhaust system components.

Characteristics of the OEM part used

This BMW turbocharger housing comes from a disassembly and is classified as a used part. These OEM parts are popular with mechanics and users because:

• ensure factory quality of material and casting,
• maintain the original mounting points and channel shape,
• are a cost-effective alternative to new components.

Standard workshop procedures are recommended during assembly: inspecting mating surfaces, threads, mounting sockets, and the tightness of connections to the manifold and exhaust system. When remanufacturing a complete turbocharger, the housing serves as the basis for further work using new rotating components and seals.

Application in turbocharger repair and regeneration

The turbocharger housing for the BMW 335d and 535d with the M57N2 engine will be particularly useful in situations where:

• cracks or deformation of the factory housing due to overheating,
• mechanical damage (e.g. impact, collision, incorrect disassembly),
• excessive corrosion or wear of the contact surfaces.

Replacing just the housing often allows you to save the remaining turbocharger components or perform a remanufacturing operation based on a proven, original housing. This is a technically safe and economically viable solution for powerful BMW diesel engines.

BMW Turbochargers – Further Selection and Technical Knowledge

If you're looking for other turbochargers and turbocharger parts for BMW, check out our dedicated category: Turbochargers and Turbocharger Parts for BMW . There you'll find a wide selection of turbocharger components tailored to various models and generations.

For post-accident repairs involving damage to body parts or attachment points, it's worth checking out the guide on our blog. The article, "Body and Bodywork – Post-accident Repairs Using Disassembled Parts," discusses a practical approach to selecting used OEM parts, repair procedures, and examples of real-world applications.