BMW Lower Engine Air Duct for 4 Series (2014–2020)

Use this BMW Lower Engine Air Duct to replace the matching original component on BMW 4 Series from 2014–2020. It mounts in the lower position and routes airflow through the engine-compartment intake or cooling path.

BMW’s original parts catalog separates components by model, year, body configuration, and installation location.

Technical Details

• BMW part number: 51-74-8-054-591
• Application range: BMW 4 Series (2014–2020)
• Fitment coverage: 15 listed model applications
• Product type: Lower Engine Air Duct
• Installation location: Lower

Fitment & Compatibility

Match the vehicle to the fitment table below, including production year, submodel, installation point, and listed notes.

For a fitment check, provide PMB Performance with the VIN, model year, and installed-system information. Our team has more than 20 years of parts experience.