Features: Aftermarket Tire Pressure Sensor with Premium Quality. Adopted metal and ABS plastic material that meet requirements, high reliability. High level of accuracy and sensitivity, enhance safety of your vehicle. Proper tire inflation improves fuel economy and tire wear as well as and stopping distances while reducing the risk of hydroplaning Original standard, directly replace your old or broken one. Product details: Type : Tire Pressure Sensor Frequency:433MHZ Part Number:A0025408017,A0025406717 Colour: Black material: plastic Fitment Application ; ( For Reference only , please check above Part Number and Picture before ordering ) Application for C216 (from 2006-09 to 2014-12) for C219 (from 2005-01 to 2010-11) for E-Class W211 (from 2005-07 to 2011-10) for -Class X164 (from 2006-01 to 2009-05) for ML-Class W164 (from 2004-12 to 2011-07) for R-Class V251 (from 2005-06 to 2009-07) for S-Class W221 (from 2005-06 to 2009-06) for SL R230 (from 2005-01 to 2011-12) Package Contents: 4 x tire pressure sensor Only 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.