MOOG Problem Solver products incorporate proven design and engineering features for like new steering ease of installation and longer life. MOOG is the preferred steering and suspension brand of professional technicians and NASCAR crew chiefs. Product Features:Innovative ball-and-socket designPermanently lubricated assemblySealed with premium MOOG boots to keep contaminants outProvides improved steering and handling feelContributes to longer life of the entire control arm assemblyEasier to install and lasts longer than typical OE designs