Please note there are two types for 722.9 TCU ECU conductor plate control module, #2 and #3.The sensors will work perfectly for both types, and the performance is stable.Please note, put bushing or other hard stuffs under the sensor protector to avoid damage of the TCU plate while knocking.Fit for A///CLK//E /G///ML/R/S/SL/ SLKClass (20002011), for (20082011).Wonderful replacement for the previous old or broken one.Conditon: RebuiltItem Type: TCU Control Module SensorCommon fault Codes Are:Fault code P 2767 The signal from component Y3/8n2 (Internal speed sensor ()) in .Fault code P 2768 Component Y3/8n2 ( Internal speed sensor ()) is defective.Fault code P 0717 The signal from component Y3/8n1 (Turbine speed sensor ()) is .Fault code P 0718 Component Y3/8n1 (Turbine speed sensor ()) is defective.Fitment:For W221 S300 S350 S500 S550 S600color: blackMaterial: ABSNew parts , the kit including:Y3/8n1 ---- 1pcsY3/8n2 ---- 1pcsY3/8n3 ---- 1pcsPackage Contents:3x transmission speed sensorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.