BMW 3 5 Series 1 E60 LCI E65 E70 E90 N52N Crankshaft Vent Breather Hose 7559528

The BMW 3 5 1 E60 LCI E65 E70 E90 Crankcase Vent Hose is an original crankcase ventilation system component designed for select BMW 1 Series, 3 Series, 5 Series, as well as higher-class sedans and SUVs. Its factory fit ensures proper oil vapor discharge, stable engine operation, and reduced unwanted leaks. This is a solution for users who want to maintain the structural integrity of the engine system and avoid problems typical of low-quality aftermarket parts.

Specifications and technical data

• SKU: 7559528-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7559528
• Substitutable numbers: 11157559528, 7559528, EM
• Category: Other Engine Parts

Purpose and Function of the Crankcase Vent Hose

The presented crankcase vent hose is a component of the crankcase ventilation system, responsible for directing gases from the crankcase to the intake system. The proper functioning of this hose affects:

• crankcase pressure stability,
• reduction of blow-by and engine "sweating" phenomena,
• decreased risk of oil contamination in the intake system,
• maintenance of smooth engine operation across a wide range of loads.

Selecting a component that matches the original BMW specification allows for the preservation of the gas flow characteristics designed by the manufacturer, which is particularly important in modern engines with complex control systems.

Compatibility with BMW Models

The hose is designed for use in popular BMW 1 Series, 3 Series, and 5 Series models, as well as larger luxury and SUV models such as E60 LCI, E65, E70, and E90. This means its geometry, connection diameters, and routing are adapted to the factory setup in the engine bay, requiring no modifications.

As a result, this part can be used for standard replacement of a worn hose, as well as during more extensive service work related to the crankcase ventilation system, valve cover seals, or engine accessory checks.

Benefits of Using an Original BMW Hose

Using an original crankcase vent hose to replace a worn or leaking component offers tangible operational benefits:

• Factory Fit – the correct length and shape of the hose facilitate installation and minimize material stress during engine operation.
• Stable Crankcase Ventilation System Parameters – maintaining the flow path and cross-section for gases as intended by the manufacturer.
• Reduced Risk of Leaks – a correctly selected hose reduces the likelihood of oil leaks and uncontrolled "false" air intake.
• Improved operating conditions for other components of the intake and engine control systems.

This solution is particularly beneficial for users who want to maintain the engine system's integrity according to the manufacturer's design and avoid problems arising from poorly fitting aftermarket parts.

Characteristics of a Used Part

The offered crankcase vent hose is a used part, sourced from disassembly. Such components are often chosen as an economical alternative to new parts, especially for vehicles used daily where a reasonable balance between cost and functionality is important.

In practice, this means the possibility of restoring proper crankcase ventilation system operation while maintaining a favorable service budget, by using a component that matches the original BMW specification.

Expanding Engine System Service and Additional Materials

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as hoses, connectors, or additional fittings, check the available parts in the Other BMW category.

When working on the engine unit and its accessories, it is also worth expanding your knowledge about the design differences between standard and sport versions – the article Audi RS vs. Other Models – What Lies Under the Hood and Chassis? will be helpful, showing how manufacturers design engine, brake, and chassis systems in high-performance cars.