Sensor-Switch-Relay-Tacho electr. installation etc.

OE:   973183  988447  996019  4115465  4124526  4124626  4124628  4151245  4160940  4151244 Alfa Rome  /  Ferrari  /  Fiat  /  Lancia  /  Maserati   ec.
OE   161364300900    60531592 with various setting options
Basic dimensions of the mounting plate 6.0x4.5cm Diameter round plate outside 35mm / mounting hole 27mm