BMW 1 3 Series F20 F21 F30 Intake Manifold Charge Air Line Hose 4737924

BMW 1 3 Series F20 F21 F30 Intake Manifold Charge Air Line Hose is an original intake system component from the Lines, hoses and pipes group, designed for use in selected BMW F-series models. Engineered as an OEM part, it ensures proper routing of compressed air between the intercooler and other system components, supporting stable engine operation and the maintenance of factory performance parameters.

Specifications and technical data

• SKU: 4737924
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 4737924
• Substitutable numbers: 4737924, 11614737924, 8513289, 11618513289
• Category: Hoses, Lines & Pipes

Purpose and function in the intake system

The presented intercooler air hose is responsible for the airtight and directional routing of charge air within the turbocharging system. Its precise shape and cross-sectional diameter support proper airflow, reducing pressure drops and the risk of turbulence that could affect engine performance.

Thanks to its OEM-compliant design, the hose works with factory clamps, connectors, and mounts, which facilitates installation and helps maintain the original geometry of the intake system. This solution is particularly important when operating a turbocharged vehicle, where boost pressure stability has a direct impact on engine dynamics and refinement.

Construction and fitment for BMW

As a BMW brand component, the hose has been designed for specific mounting points in the engine bay, which minimizes stress and reduces the risk of chafing during engine operation. The appropriately selected material flexibility allows it to compensate for vibrations and movements of the powertrain while maintaining connection integrity.

Its original BMW OE origin ensures compliance with factory dimensional tolerances and compatibility with equipment used in F20, F21, and F30 models. For the user, this translates into predictable installation without the need for modifications or fitting aftermarket alternatives.

Component condition and service application

The offered hose is a used part, making it an attractive service solution for intake system repairs, especially when cost optimization while maintaining original specifications is a priority. This type of component is often chosen in cases of mechanical damage to hoses (cracks, tears, leaks) or when replacing parts after a collision.

In workshop practice, the intercooler air hose is replaced, among other reasons, due to power loss, whistling or hissing sounds under load, or visible traces of oil on the outer surface of the hose. Using an original component helps restore the proper operation of the turbocharging system without experimenting with fitting universal solutions.

Benefits of using an original hose

• preservation of the factory intake system geometry and mounting points,
• compatibility with BMW F-series equipment, without the need for modifications,
• stable charge airflow, promoting correct engine performance parameters,
• reduced risk of leaks in the critical section between the intercooler and the engine.

Selection support and additional information

When selecting this component, it is worth verifying compatibility with the specific engine version and vehicle model year using the manufacturer's markings and catalog data. The product has assigned interchangeable numbers, which facilitates the identification of the correct variant in BMW catalogs and service systems.

If you are planning a comprehensive repair or upgrade of the intake system area in your BMW and need other components from the same group, such as air lines, flexible intercooler hoses, or pressure pipes, check the available parts in the BMW lines, hoses and pipes category.

Additional tips on the safe operation of used components and preparing your car for harsher weather conditions can be found in our guide article Winter essentials: which used car parts are worth checking and replacing before the frost?, where you will find practical checklists and information on working with OEM numbers.