BMW F20 F21 F30 F31 LCI B38 Filtered Air Pipe Resonator Box 8601680

The BMW F20 F21 F30 F31 LCI B38 Air Filter Resonator is an original intake system component from the hoses, pipes, and tubes category, designed for BMW models with the B38 engine after the facelift (LCI). It is responsible for stabilizing airflow in the intake, reducing intake air noise, and improving the engine's running smoothness.

Specifications and technical data

• SKU: 8601680
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8601680
• Substitutable numbers: 13718601680, 8601680
• Category: Hoses, Lines & Pipes

Purpose and Function in the Intake System

The air filter resonator in the B38 engine serves as an air flow shaping element between the filter housing and subsequent intake components. Thanks to its appropriately selected geometry, it helps to reduce air pulsations, which contributes to stable engine operation across the entire RPM range and supports the correct functioning of the mixture control system.

In the F20, F21, F30, and F31 series models after the facelift, the use of the correct resonator is crucial for maintaining the factory operating parameters of the B38 unit, including throttle response, noise levels, and compatibility with the engine control unit maps.

Advantages of Using an Original BMW Part

Using an original resonator from the Hoses, Pipes, and Tubes category ensures:

• factory fit to the intake system in the specific body variant and engine,
• correct air routing without unwanted turbulence,
• maintenance of the stock intake noise level,
• compatibility with mounting points and other intake components.

This allows for an organized installation without the need for modifications or additional adapters, and the intake system retains the parameters intended by the manufacturer.

Product Condition and Service Application

The offered resonator is a used part, making it an attractive alternative for post-accident repairs, replacement of damaged intake hoses, or restoring the factory configuration after previous modifications. In practice, it proves to be an economical solution in situations where maintaining the original intake system geometry and proper fit with factory brackets are crucial.

Before installation, a standard visual inspection is recommended to check for leaks, the condition of the spigots, and surfaces that mate with clamps and bands, to ensure trouble-free operation after installation in the vehicle.

Fitment by OEM Number and Interchangeable Numbers

The air filter resonator works with specific intake system variants in the B38 engine, so when selecting a part, it is advisable to refer to the OEM number and interchangeable numbers visible in the technical specifications. This allows you to verify compatibility with a specific body version and vehicle year, and to avoid installation problems.

If you need a structured approach to verifying compatibility by VIN or OEM number, our guide may be helpful: how to choose the right car part by VIN and OEM number, where you will find practical tips and a checklist for discussing with the seller.

Other BMW Hoses, Pipes, and Tubes

If you are also looking for other intake system or installation components from the BMW Hoses, Pipes, and Tubes category, check out the BMW hoses, pipes, and tubes available in our store to select a complete service solution tailored to your model.