51718090248 Liner | BMW X7 G07 Front Right Fender Liner Extension

51718090248 Liner - Precision Engineered Wheel Arch Protection

Critical aerodynamic component for BMW X7 G07 series, the 51718090248 Liner integrates with front wheel housing assemblies to reduce turbulence and prevent debris intrusion into engine compartments. This injection-molded thermoplastic extension features contoured surfaces that follow wheel rotation patterns while maintaining consistent 8mm clearance from high-performance tire sidewalls. Engineered with integrated mounting points that secure to chassis reinforcement points using vibration-dampening fasteners, the liner maintains structural integrity during off-road operation. Its multi-chamber design channels water away from electrical components while providing acoustic insulation against road noise. Manufactured from impact-resistant polypropylene with UV stabilizers, the component withstands temperature extremes from -40°C to 120°C while resisting degradation from road chemicals. The liner's ribbed underside minimizes aerodynamic lift at highway speeds, with precisely positioned drainage channels preventing water accumulation near suspension components. Compatible with both standard and air suspension configurations.

OEM-grade fitment showing seamless integration with wheel housing

Reinforced rib patterns and drainage channel engineering

UV-stabilized polypropylene with impact-resistant formulation

Symmetrical design for left 51718090247 and right 51718090248 applications

Vehicle Fitment Specifications

Designed exclusively for BMW X7 G07 platform vehicles manufactured between 2018-2023 model years, the 51718090248 Liner maintains compatibility with all engine variants including 40i, 50i, M50i, and Alpina XB7 configurations. This component integrates with both standard and M Sport bumper assemblies, accommodating variations in front sensor positioning including parking assistance systems and night vision cameras. The liner's dimensional tolerances ensure proper clearance for wheel sizes ranging from 21" to 23" factory alloys regardless of tire profile specifications. Installation compatibility extends to vehicles equipped with adaptive suspension systems and active roll stabilization technology, with precise contouring around air suspension components. Verify specific vehicle configuration using production data to ensure proper integration with optional equipment packages including off-road packages and cold climate configurations requiring additional underbody protection.

Engineering Specifications

Manufactured through high-pressure injection molding, the 51718090248 Liner utilizes 35% mineral-reinforced polypropylene that exceeds DIN 53455 material standards for impact resistance. The component's geometric complexity features wall thickness variations between 2.5-4mm strategically reinforced at load-bearing mounting points. Precision-molded clips maintain ±0.3mm positional accuracy relative to chassis mounting interfaces, with stainless steel fasteners rated for repeated installation cycles. The polymer compound incorporates hydrophobic additives that prevent water absorption while maintaining flexibility at sub-zero temperatures. Acoustic insulation properties reduce road noise transmission by 28% compared to standard designs, with integrated stone impact buffers protecting vulnerable components. Production validation includes 3D scanning verification to ensure dimensional conformity throughout the entire wheel arch contour profile under dynamic load simulations.