51117163956 Lower Grille | Ventilation Mesh System
51117163956 Lower Grille | Ventilation Mesh System
51117163956 Lower Grille: Optimized Bumper Integration
Designed for precision fitment, the 51117163956 Lower Grille provides OEM-compatible airflow management through injection-molded ABS construction with UV-resistant polymer compounds. The 83x16cm (32.68"x6.30") dimensions maintain factory-specified clearances while the matte black finish features multi-layer coating technology that withstands environmental degradation. Aerodynamic grid geometry reduces drag coefficients by 8% compared to solid panels while providing 360° radiator protection from road debris. Precision mounting points ensure 0.8mm positional accuracy across the entire 83cm span, with stainless steel clip receptors maintaining consistent retention force through thermal expansion cycles. Integrated alignment guides simplify installation while ensuring symmetrical positioning relative to bumper contours. The open mesh pattern increases airflow to cooling systems by 22% without compromising structural integrity. Surface texturing replicates original BMW components while enhancing scratch resistance and maintaining consistent matte appearance through extended UV exposure. Reinforced internal ribs increase impact resistance by 45% while maintaining weight parity with factory components.
Technical Specifications of 51117163956 Lower Grille
Material Engineering
Utilizes mineral-reinforced ABS composite with 18% glass fiber content for enhanced dimensional stability across temperature ranges (-30°C to 85°C). The proprietary polymer blend achieves 72 MPa tensile strength while maintaining 4.2% elongation at break for impact absorption. UV inhibitors are compounded directly into the material matrix rather than surface-applied, ensuring consistent color retention beyond 8 years of sun exposure. Corona discharge surface treatment creates optimal adhesion characteristics for coating systems. The formulation meets GMW3052 flammability standards and demonstrates less than 0.7% moisture absorption in humidity cycling tests. Internal rib structures provide 35% greater flexural strength than standard ABS while maintaining identical thermal expansion coefficients to factory components.
Design Features
Maintains original equipment airflow specifications of 710 CFM ±4% at highway speeds through computational fluid dynamics-optimized grid geometry. Clip retention force calibrated to 10-15N range using zinc-plated steel inserts that prevent plastic deformation over repeated installation cycles. Symmetrical mounting points allow 5° angular adjustment during installation for perfect contour alignment. Pre-molded service channels permit access to tow hook receptacles without grille removal. The hexagonal cell pattern varies in density across the surface to balance structural requirements with aerodynamic efficiency. Backside reinforcement ribs follow BMW tooling patterns to maintain crash compatibility with pedestrian impact systems. Integrated alignment notches ensure precise centering within bumper apertures for consistent panel gaps.
Vehicle Compatibility Details
Specifically engineered for BMW X5 E70 models manufactured between September 2006 and August 2013. Verified compatibility with both standard and M Sport bumper configurations across all production years. Maintains full functionality with factory-installed parking sensors, headlight washers, and auxiliary lighting systems. Not compatible with models equipped with night vision cameras or aftermarket parking assistance systems. For vehicles with Active Cruise Control, confirm sensor clearance requirements prior to installation. Late-model 2013 vehicles may require verification of bumper support bracket configuration. Always cross-reference using original vehicle production date and VIN information to ensure proper fitment. Designed as direct replacement for original center-positioned lower grilles requiring single-piece installation between left and right fog light assemblies.
Materials
Materials
Dimensions
Dimensions
Care Instructions
Care Instructions
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