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Air Duct with Active Air Flap Control – Bottom

Air Duct with Active Air Flap Control – Bottom

Original price was: £188.95.Current price is: £175.99. inc VAT

  • Brand: Genuine BMW
  • Manufacturer Part Number: 51135A48F41
  • Placement On Vehicle: Bottom, Front
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Wed Feb 25
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The genuine BMW air duct with active air flap control – bottom (51135A48F41) is compatible with BMW 1 Series F40 (2019–2024) and BMW 2 Series Gran Coupé F44 (2019–2024) models equipped with CO2 equipment (option S1CBA = Yes). It forms part of the lower front bumper air management system.

This component integrates the active air flap mechanism within the lower air duct assembly, allowing controlled airflow regulation to optimise aerodynamic efficiency and engine cooling performance. The system automatically adjusts airflow depending on driving conditions, helping improve fuel efficiency and thermal management.

Part number 51135A48F41 replaces the earlier version 51137455720. This is a genuine BMW part designed to maintain factory aerodynamic and cooling performance standards.

As compatibility may vary depending on production date and vehicle specification, please provide your VIN or UK registration number to confirm correct fitment before purchase.

Part 51135A48F41 is identified as number 06 in the diagram.

Supersedes:  51137455720

For vehicles:

  • with CO2 equipment S1CBA=No
Brand

Genuine BMW
Manufacturer Part Number

51135A48F41
Placement On Vehicle

Bottom, Front

The part number 51135A48F41 is compatible with the following vehicles:

MakeModelEngineYear(s)Fuel Type
BMW1 Series (F40) Hatchback116d (114 HP | 85 KW)2021 - 2025Diesel
BMW1 Series (F40) Hatchback118d (147 HP | 110 KW)2021 - 2023Diesel
BMW1 Series (F40) Hatchback118i (134 HP | 100 KW)2021 - 2025Petrol
BMW1 Series (F40) Hatchback118i (138 HP | 103 KW)2021Petrol
BMW1 Series (F40) Hatchback120d (187 HP | 140 KW)2021 - 2025Diesel
BMW1 Series (F40) Hatchback120dX (187 HP | 140 KW)2021 - 2023Diesel
BMW1 Series (F40) Hatchback128ti (261 HP | 195 KW)2021 - 2025Petrol
BMW2 Series (F44) Gran Coupe218d (147 HP | 110 KW)2021 - 2024Diesel
BMW2 Series (F44) Gran Coupe218i (134 HP | 100 KW)2021 - 2025Petrol
BMW2 Series (F44) Gran Coupe218i (138 HP | 103 KW)2021Petrol
BMW2 Series (F44) Gran Coupe220d (187 HP | 140 KW)2021 - 2023Diesel
BMW2 Series (F44) Gran Coupe220i (175 HP | 131 KW)2021 - 2025Petrol
BMW2 Series (F44) Gran CoupeM235iX (301 HP | 225 KW)2021 - 2025Petrol