51117342392 Front Grille | Bilateral Half-Open Grille Assembly

The 51117342392 Front Grille features precision-engineered airflow channels with 45° angled slat geometry, optimizing cooling efficiency while maintaining aerodynamic integrity. Constructed from glass-reinforced nylon composite with dual-layer chrome plating, the unit withstands stone impacts up to 120mph without deformation. Its asymmetrical mounting system incorporates 11 corrosion-resistant brass inserts that maintain 0.8mm gap consistency across all contact points.

The hybrid open/closed design reduces water intrusion by 38% compared to fully open grilles. UV-stable polymer construction prevents yellowing, with surface gloss maintained at 95GU after 5 years of exposure. Pre-installed vibration dampeners eliminate high-frequency resonance between 65-80mph.

Engineering Specifications

• • Core Material: PA6-GF30 composite
• • Plating Layers: 3-stage electroplating
• • Temperature Range: -40°F to 212°F
• • Impact Resistance: 15J energy absorption
• • Surface Hardness: 8H pencil rating

Verified applications include: F18 528i Luxury Line 2013-2016 F18 535i M Sport 2014-2017 F18 550i xDrive 2012-2016 F18 ActiveHybrid 5 2015-2016
OE Reference Numbers: 51 11 7 342 391 51.11.7.342.391 51117342392 51-11-7-342-392 BMW-51117342391