ApplicationCompatible for Mercedes Benz R Class W251 V251 2006 - 2018Model: R 280, R 280 CDI, R 280 CDI 4matic, R 300, R 300 CDI, R 300 CDI 4matic, R 320, R 320 CDI, R 320 CDI 4matic, R 350, R 350 CDI,R 350 CDI 4matic, R 500, R 500 CDI, R 500 CDI 4matic, R 63 AMG,tip: suitable for vehicles with ADS.Reference OE/OEM Number251 320 06 31, 2513200631, 251 320 14 31, 2513201431, 251 320 22 31, 2513202231, 251 320 07 31, 2513200731, 251 320 10 31, 2513201031, 251 320 09 31, 2513200931, 251 320 18 31, 2513201831, 251 320 29 31, 2513202931, A251320303160, A251320303180, A251320303188, A2513201031, A251320103160, A251320103180, A251320103188, A2513201931, A251320193160, A251320193180, A251320193188, A2513203031Feature- one year Warranty- for rear left or right side- Mates with OE Air Lines- Designed for Comfort Suspension- These air suspension bags are aftermarket ones. They will replace the original rear air springs.Note- Instruction is not included. Professional installation is recommended- Contact us please for whatever we can help