... 65Mn or Steel 55# 3.Suitable for OEM or Aftersales Market hub unit 1) QC: ISO/TS16949:2009 ... period is one year or 50,000 KM for AftersalesMarket. product quality assurance period is two years ... or 100,000 KM for OEM Market. 4) Superficial finish: carefully work ... thirdgeneration wheel hub bearing units,they are suitable for various famouscars,such as Opel,Buick,Chevrolet,Ford ...