For 2006-2009 Toyota 4Runners, full LED headlight assemblies are popular aftermarket upgrades that replace the factory halogen units with modern projector lenses, LED low/high beams, and integrated daytime running lights (DRLs) for a contemporary look and improved visibility. These plug-and-play assemblies are designed for a direct, bolt-on fit using factory connectors, though some styles like halo rings are also available.