BMW 3 Series 1 E90 E91 E92 M57N2 Turbo Charge Air Line Pipe 7798440

BMW 3 Series 1 E90 E91 E92 M57N2 Turbo Charge Air Line Pipe is an intake system component responsible for efficiently routing compressed air from the turbocharger to the intercooler and intake manifold. This component from the Lines, hoses and pipes group is a factory solution dedicated to the M57N2 engine unit, which ensures proper fitment and stable engine operation. Using this pre-owned part allows for an economical yet technically sound repair of the turbocharging system.

Specifications and technical data

• SKU: 7798440-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7798440
• Substitutable numbers: 11618506078, 8506078, 11617798440, 7798440, 11617793117, 7793117, 7802122, AS
• Category: Hoses, Lines & Pipes

Purpose and function in the turbocharging system

The turbo charge air line in the M57N2 engine is responsible for the airtight and low-loss routing of compressed air between the turbocharger and subsequent intake components. The correct geometry and cross-sectional diameter support stable boost pressure, which translates into the engine's refinement and performance parameters. Using an original BMW solution reduces the risk of leaks, power loss, or ECU errors related to improper airflow.

Compatibility with BMW 3 Series E90/E91/E92 M57N2

The offered pipe is designed for specific configurations of the BMW 3 Series E90, E91, and E92 generations with the M57N2 diesel engine. The design, tailored to the factory intake system, facilitates installation in place of a worn or damaged part without the need for modifications or adapters. This maintains the integrity of the entire air path and minimizes the risk of interference with other components in the engine bay.

Benefits of using an original turbo charge air line

Choosing an original turbo charge air line for a BMW 3 Series with the M57N2 unit provides a number of practical benefits:

• maintaining the factory airflow characteristics in the turbocharging system,
• better fitment to mounts and adjacent components in the engine bay,
• reduced risk of leaks under load and temperature changes,
• easier diagnostics of potential intake system faults in the future.

For users looking for a solution close to the factory standard, using such a component is beneficial both in terms of technical performance and operation. Stable charge air flow promotes smooth engine operation and limits the risk of unwanted performance drops.

Characteristics of the used component

The pipe is offered in a used condition, which allows for lower repair costs while maintaining the original design. Such components are a popular choice when servicing older BMW 3 Series vehicles, where a reasonable balance between price and functionality is important. A used pipe can be a good solution if the existing part has cracked, chafed, or deformed, leading to a loss of airtightness.

Selection support and additional information

For intake system components, it is crucial to match the part to the specific engine and body version. The offered pipe has an assigned OEM part number and associated interchangeable numbers, which facilitates verification of compatibility with a given vehicle. If necessary, it is worth comparing the shape and mounting points with the part currently installed in the car.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other items from the same group, such as intake lines, turbocharger hoses, or vacuum pipes, check the available parts in the BMW lines, hoses and pipes category.

If you are considering a broader drivetrain upgrade and want to better understand the specifics of the used parts market, selection procedures based on OEM numbers, and the real cost differences between new and used components, our guide article Why it is worth buying used gearboxes and engines – facts instead of myths may be helpful.