Application Compatible for Mercedes Benz S-Class W221 Compatible for Mercedes S350 Bluetec 4 Matic Sedan 4-Door 3.0L 2012-2013 Compatible for Mercedes S450 4 Matic Sedan 4-Door 4.6L 2008-2011 Compatible for Mercedes S550 4 Matic Sedan 4-Door 4.6L 2012-2013 Compatible for Mercedes S550 4 Matic Sedan 4-Door 5.5L 2007-2011 Compatible for Mercedes Benz CL-Class C216 Compatible for Mercedes CL550 4 Matic Coupe 2-Door 4.6L 2011-2013 Compatible for Mercedes CL550 4 Matic Coupe 2-Door 5.5L 2009-2010 Compatible for S-Class Vehicles With 4MATIC (AWD) Suspension Only.NOT fit on Vehicles with Base RWD or ABC Suspension Models Reference OE/OEM Number 2213200538, A2213200538, 2213201838, A22132018382213209813, A2213209813, 2213205413, A2213205413221320183880, A221320183880, 221320183888, A221320183888221320053860, A221320053860, 221320053880, A221320053880221320053888, A221320053888, 221320183860, A221320183860221320981360, A221320981360, 221320981380, A221320981380221320981388, A221320981388, 221 320 05 38, 221 320 0538, 221-320-05-38 Specifications Condition: Brand New Fitment Type: Direct Replacement Quantity: 1 piece (for front Right ) Placement on Vehicle: For front right Passenger's side Placement on Vehicle: For front right Driver's side Greasable or Sealed: Sealed Adjustable: Yes Length, width & height (in/cm): 33*8*7.9 /84*20.5*20 Weight: 9.23kg Stroke:70mm Operating Pressure: ≤2 M Pa Temperature range:+70°、-40° Feature 1. 100% Air Tightiness testing 2. 24 hours air tightness test ≤0.02 M Pa 3. Anti-corrosion & 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 & good sound insulation to ensure our driving comfort & safety 13. Restore the original ride height & improve ride quality 14. Test more than 3 million times 15. Sturdy & Durable Material Notice 1. These air suspensions are aftermarket ones. They will replace the original air shock absorber.2. The best way to check compatibility is to check the Part Number on your old unit.3. Professional installation is recommended. Warranty: one year warranty for any manufacturing defect