BMW E90 E91 LCI E92 E93 Diesel N57 Filtered Air Pipe Tube 7800067

BMW E90 E91 E92 E93 Diesel N57 Air Hose is an item from the Hoses, Tubes, and Pipes category, designed for the fuel systems of BMW 3 Series diesel engines with the N57 unit. The used hose is a practical service solution, allowing for the restoration of proper airflow in the intake system and maintaining stable engine operating parameters.

Specifications and technical data

• SKU: 7800067-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7800067
• Substitutable numbers: 7800067, 13717800067
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Role in the Intake System

The air hose in the N57 engine is responsible for directing compressed air between the components of the intake system, which directly impacts performance, running smoothness, and fuel consumption. For BMW E90, E91, E92, and E93 models with a diesel engine, a correctly selected hose ensures:

• stable airflow to the engine under various loads,
• reduction of pressure drops in the intake system,
• decreased risk of leaks that can cause power loss or limp mode,
• proper cooperation with engine accessories, including the turbocharging system.

Benefits of Using an Original BMW Air Hose

Choosing an air hose dedicated to a specific series and engine type allows for the preservation of factory engine operating parameters. For diesel engines, maintaining the seal and proper hose cross-section is particularly important, which translates to:

• proper throttle response and predictable vehicle behavior during acceleration,
• stable turbocharger operation and reduced risk of overboosting or underboosting,
• maintaining the correct mixture composition across the entire RPM range,
• reduced load on other intake system components.

A used original part is a sensible choice for drivers who want to combine functionality with cost control while maintaining compatibility with the factory installation.

Assembly and Operational Characteristics

The air hose designed for the N57 engine in the BMW 3 Series is engineered to work with factory mounting points and the engine bay's shape. This ensures a streamlined installation process without the need for modifications or additional adapters. A correctly selected hose:

• fits the standard intake system in the specific body variant,
• maintains appropriate stiffness and flexibility under typical diesel operating conditions,
• reduces vibration transfer from the engine to the body components,
• allows for the preservation of the factory routing of air channels in the engine bay.

For diesel engines, where boost pressures are higher than in many gasoline engines, the proper hose design is crucial for the durability of the entire system.

Why a Functional Air Hose is Important in a Diesel Engine

In diesel engines, any leaks in the intake system can lead to power loss, increased smoke, and even error codes stored in the engine control unit. A functional air hose helps to mitigate common diesel operational problems such as:

• uneven engine operation under load,
• increased fuel consumption,
• deteriorated dynamics in the mid and high RPM range.

If you notice a significant drop in performance or observe any concerning symptoms in the diesel engine's operation, it is advisable to simultaneously check both the intake system and the fuel injection system. Additional information on typical fuel supply issues can be found in the article Diesel Injector Faults – How to Recognize Them and What Their Neglect Entails, which helps to better understand the relationship between accessory condition and engine performance.

Other BMW Hoses, Tubes, and Pipes

If, during the service of your intake or intercooler system, you also need other components from the Hoses, Tubes, and Pipes category dedicated to this brand, check out the BMW hoses, tubes, and pipes available in our store to gather all the necessary components in one place.