51117203790 Lower Center Grille | Aerodynamic & Cooling Component

51117203790 Lower Center Grille - Front Bumper Enhancement

Designed for BMW Z4 E89 roadsters, the 51117203790 Lower Center Grille delivers aerodynamic integration with bumper contours while providing essential airflow management to cooling components. This injection-molded component features precisely angled vanes that optimize airflow to the radiator assembly while deflecting road debris. The integrated mounting clips engage factory bumper receptacles with audible confirmation of secure installation. UV-stabilized ABS construction maintains dimensional stability across temperature extremes (-40°C to +95°C) while resisting stone impacts at highway speeds. The precisely contoured perimeter creates seamless transitions with surrounding bumper elements, with integrated drainage channels preventing water accumulation in critical areas. The textured matte black finish maintains its appearance through seasonal conditions without requiring special maintenance.

OEM-specification integration with bumper contours

Precision airflow vanes and clip mounting system

Engineering Features

The 51117203790 Lower Center Grille utilizes dual-density construction with rigid ABS structural framework and flexible TPE perimeter seals that absorb minor impacts while maintaining precise alignment. The aerodynamic vane configuration reduces front-end lift by 2.8% at highway speeds while increasing airflow to cooling components by 18% during high-temperature operation. Integrated drainage channels prevent water accumulation that could lead to corrosion in mounting areas. The matte textured surface maintains its appearance through 80,000km of service while resisting UV degradation. Precision-molded mounting clips provide secure engagement with factory bumper receptacles, requiring no modifications for installation. The component's geometric profile maintains 0.5mm tolerance across production batches, ensuring consistent appearance with adjacent trim elements.

Vehicle Compatibility