51747399997 Duct | OEM-Equivalent Bottom Radiator Duct for BMW G01/G02 Platforms (2018-2024)

51747399997 Duct

The 51747399997 Duct provides critical under-radiator airflow management through precision-engineered contours that optimize cooling system efficiency. This bottom radiator air duct features reinforced polypropylene construction with integrated structural ribs maintaining dimensional stability during high-speed driving and thermal cycling. Aerodynamic channels direct turbulent airflow away from suspension components while ensuring laminar flow through the radiator core. Molded-in mounting points allow direct installation using factory hardware positions without requiring modifications. Hydrophobic surface treatment prevents water retention and road salt accumulation in winter conditions. Vibration-dampening thermoplastic elastomer bushings isolate road vibrations from transferring to chassis components. UV-resistant polymer matrix preserves material integrity under prolonged sun exposure while resisting degradation from automotive fluids. Reinforced edges prevent deformation during off-road driving or curb impacts. Precision alignment features ensure proper sealing against radiator end tanks and underbody panels. Integrated drainage channels prevent debris accumulation while maintaining optimal airflow volume. Cross-car compatibility achieved through adaptive contour design accommodating various engine configurations.

Compatibility Specifications for 51747399997 Duct

Designed for BMW X3 G01 (2018-2024) and X4 G02 (2019-2024) models with B46/B48/B58 engines. Validated fitment with both standard and M Sport suspension configurations. Maintains proper clearances for front axle components including steering racks and stabilizer bars. Compatible with adaptive suspension systems and active aerodynamics packages. Verified integration with factory-installed skid plates and underbody protection systems. Precision-matched to M Performance exhaust systems and auxiliary transmission coolers. Maintains critical airflow paths for models equipped with oil cooler packages. Tested compatibility with all-wheel drive variants and hybrid powertrain configurations. Seamless integration with front parking sensor arrays and tow hook provisions. Verified durability against road debris impacts at highway speeds. Maintains structural integrity across temperature extremes from -30°C to 110°C. Compatible with BMW factory-approved lift systems and alignment equipment. Precision-engineered to accommodate variations in radiator core thickness across model years. Validated against chassis flex during aggressive cornering and off-road use. Maintains proper sealing with both mechanical and electronic active grille systems.

Cross-Compatible Part Numbers