51117331721 Fog Trim | Aesthetic & Functional Compliance

Designed for BMW 5 Series Gran Turismo LCI models, the 51117331721 Fog Trim combines PVD-coated stainless steel with precision-engineered ABS mounting brackets. This electroplated assembly maintains 0.5mm gap tolerance to adjacent bumper components while providing corrosion-resistant protection for fog lamp modules. The three-stage chrome plating process ensures 8μm surface thickness matching factory-level reflectivity standards.

Pre-installed vibration dampeners prevent harmonic resonance at highway speeds, while the aerodynamic contour reduces drag coefficient by 0.02Cd. The snap-fit retention system allows tool-free installation without modifying existing bumper structure, compatible with both halogen and LED fog light configurations across all F07GT variants.

Engineering Specifications

• • Base Material: 304 Stainless Steel
• • Coating Type: Physical Vapor Deposition
• • Salt Spray Resistance: 500hrs
• • Thermal Range: -40°C~150°C
• • Retention Force: 22N/cm²

Verified configurations: F07GT LCI 2015-2017 535i xDrive Models 550i M Sport Package F07 Adaptive Drive Systems
OE Reference Network: 51117331721 51-11-7-331-721 Nebelscheinwerferblende Fog Lamp Bezel LCI Trim Upgrade