General description Designed for comfort suspension, this Rear Air Suspension Shock Absorber is specifically made for the Mercedes-Benz R-Class W251 and V251 models from 2006 to 2013. These aftermarket air suspension bags are intended to replace the original rear air springs, ensuring a smooth and comfortable ride. Technical specifications Condition: New Placement on Vehicle: Rear right/left Warranty: 2 years Quantity: 2 pieces Reference OE/OEM Numbers: 2513200931, 2513201031, 2513201831, 2513201931, 2513202931, 2513203031, 2513203131 Compatibility and accessories Compatible with Mercedes-Benz R-Class W251, V251 models (2006-2013) with ADS / Adaptive Damping System Models include R 280, R 300, R 320 CDI, R 350, R 500, and R 63 AMG with various engine specifications Installation Professional installation is recommended Instruction manual is not included Usage Replace original rear air springs for improved comfort and performance Other information Note: Please double-check the Reference