51747331783 Air Duct | Engine Compartment Airflow Management Component

The precision-engineered 51747331783 Air Duct system features bi-directional airflow channels with turbulence-reducing internal ribs. Constructed from glass-reinforced PA66 polymer, the duct maintains structural integrity at sustained 150°C operation. Its three-stage mounting system combines spring-loaded clips with vibration-damping bushings, ensuring secure attachment to F18 chassis components.

Aerodynamic contours match factory bumper profiles within 0.5mm tolerance. The integrated particulate filter prevents debris ingress while maintaining 98% airflow efficiency. UV-stabilized material formulation resists environmental degradation across -30°C to 120°C temperature extremes.

Thermal Engineering

• • Material: 30% Glass-Filled PA66-GF30
• • Operating Temp: -40°C to 160°C
• • Flow Efficiency: 320 CFM @ 60km/h
• • Surface Finish: Texture-matched OEM
• • Mounting System: Tri-point retention

Direct replacement for: F18 528i 2013-2016 F10 535i 2012-2016 F07 550i GT 2014-2017
OE Cross Reference: 51 74 7 331 783 51.74.7.331.784 51747331783 51747331784