Smart Fortwo & Roadster GEARBOX Position Rotation Angle Sensor 0003254V009
Suitable For All Smart Fortwo (450) & Roadster (452) Models Part number: 0003254V009000000
Genuine Smart Part - virtually new was installed only to find out this is not culprit of my gearbox problem, cost over £90 from Mercedes dealer asking only half.
Will also deliver free of charge within 10 miles radius or can post it if you cover postage price.