Quick view VDO Kitas2+ Smart tachograph sensor - M18x1.5 - Element 25mm - Ring 2171-20002335-A3C0641720120 Smart Tachograph sensor: Kitas2+ Thread: M18x1.5 - Male Element 25mm - Ring 1.2mm ISO15170 Plug 4-Pole Natural Replacement (MTCO): AAA2663870021 Replacement (DTCO): A3C1008710021