General description These air suspension bags are aftermarket replacements for the original rear air springs of the Mercedes-Benz R-Class W251, specifically designed for models from 2006 to 2010. Technical specifications Reference OE/OEM Numbers: 251 320 0025, 251 320 03 25, 251 320 0325, 251 320 04 25, 251 320 0425, 2513200025, 2513200325, A2513200025, A2513200325, A2513200425 Condition: Brand New Placement on Vehicle: Rear left & right side Quantity: 2 pieces Warranty: 2 Year Stress Test: Over 5,000,000 times Burst Pressure: ≥ 2.0 MPa Air Tightness Test: ≤ 0.02 MPa Temperature Range: ≥ -40℃ / ≤ 70℃ Installation Professional installation is highly recommended. Instructions are included. Usage These air suspension bags are designed to provide durability and safety, ensuring high compressive strength and reduced noise during operation. Other information Product Certification: ISO9001:2015