ApplicationFor 2010-2016compatible for Mercedes E-CLASS (W212 S212 Chassis All, with AIRMATIC incl. AMG) For 2011-2018compatible for Mercedes CLS-CLASS（C218/W218 Chassis All, with AIRMATIC incl. AMG)OE/Part number2123200725,A2123200725,212 320 07 25 2123202125,A2123202125,212 320 21 25 2123203925,A2123203925,212 320 39 25 2123204325,A2123204325,212 320 43 25 2123203725,A2123203725,212 320 37 25 2123200325,A2123200325,212 320 03 25SpecificationCondition: New Quantity: 1 piece (for the left back side) Part Type：Air Suspension Spring Fitment Type: Direct Replacement Placement on Vehicle: Rear left Driver\'s side Greasable or Sealed: Sealed Length, width and height (in/cm): 11.8.*6.7*6.7/ 30*17*17 Gross weight：2.1KG Operating Pressure (psi): ≤290 psi Temperature range：+70°、-40° Applicable Regions: Airmatic Suspension System Couples with OE Air Lines Designed for comfortFeature1. 100% Air Tightiness testing 2. 24 hours air tightness test ≤0.02MPa 3. Anti-corrosion and provide a more consistent wear surface 4. Built to strict quality control standards 5. CNC Machined Components 6. Designed for Comfort Suspension 7. Direct replacement for OEM strut without modification 8. Easy to install 9. Eliminating abnormal sound 10. Gives the driver more control of ride 11. Good heat dissipation 12. It has a high compressive strength and good sound insulation to ensure our driving comfort and safety 13. Restore the original ride height and improve ride quality 14. Test more than 3 million times 15. Sturdy & Durable Material