Quick view VDO Kitas2+ Smart tachograph sensor - M18x1.5 - Element 25mm 2171-20000135-A3C0641700120 Application data sheet on request Thread: M18x1.5 - Male Element 25mm - Without ring ISO15170 Plug 4-Pole Natural Replaced for MTCO by: AAA2663880021 Replaced for DTCO by: A3C1008720021