The Bulb(12v1.7w,wb372,t7) is the most widely applied product in the GSF600U 1998 (W) GERMANY (E22) SPEEDOMETER (MODEL S) ( five times ).
The Speedometer (model S) assembly is constructed from several parts from which the Tachometer is the most expensive.
The component with the lowest price in the SPEEDOMETER (MODEL S) schematic is the Bulb(12v3.4w,t10,bf175-01450a).