Quick view VDO Kitas2+ Smart tachograph sensor - M18x1.5 - Element 19.8mm - Lead free VDO 2171-20406135-A3C0641660120 Application: Iveco 4:1 Thread: M18x1.5 - Male Element 19.8mm - Ring 1.8mm ISO15170 Plug 4-Pole Natural Replaced for MTCO by: AAA2663840021 Replaced for DTCO by: A3C1008680021