Quick view VDO Kitas2+ R1 Smart tachograph sensor R1.21 - M18x1.5 - Element 63.2mm - Ring 2171-20002435-A3C0641920120 For VDO-Stoneridge-Bosch-EFAS Thread: M18x1.5 - Male Element 63.2mm - Ring 1.2mm ISO15170 Plug 4-Pole Natural Replacement (MTCO): AAA2663910021 Replacement (DTCO): A3C1008750021