Radiator Upper Air Duct / Cooling Guide - Fits BMW 3 Series F30/F31 (328i, 320d, etc.)
This brand-new upper radiator air duct channels airflow efficiently toward the radiator and cooling components. It replaces the original air guide fitted to BMW 3 Series models and matches OEM reference 51747255413 , ensuring proper cooling performance and correct under-bonnet airflow.

✅ Key Features

• OEM Reference: 51747255413 / 51 74 7 255 413

• Part Type: Upper Radiator Air Duct / Cooling Air Guide

• Position: Engine Bay - Upper Radiator Area

• Condition: Brand New - Unused

• Designed to fit exactly like the original

• Ensures correct airflow to radiator and cooling system

• Ideal replacement for cracked, missing or heat-damaged ducts

🚘 Compatible Vehicles

⚠️ Always match your original part number to ensure correct fitment, as ducting varies slightly by engine and package.

🔁 Related Part Numbers

• 5174 7255 413

• May be paired with lower air duct pieces (depending on model)

⚠️ Important Notes

• This listing is for the upper air duct only -- it does not include radiator, shrouds, or additional duct pieces.

• Check your original duct layout before purchase.

• Not suitable for vehicles with heavy aftermarket front-end modifications.

📦 Package Includes

• 1 × Upper Radiator Air Duct - OEM Ref 51747255413