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 Equipped with Base RWD or ABC Suspension Models OE/OEM Number 2213200438, 221 320 04 38, A2213200438, A221 320 04 38, 2213205313, 221 320 53 13, A2213205313, A221 320 53 13, 2213201738, 221 320 17 38, A2213201738, A221 320 17 38, 221320173880, 221 320 17 38 80, A221320173880, A221 320 17 38 80, 221320173860, 221 320 17 38 60, A221320173860, A221 320 17 38 60, 221320173888, 221 320 17 38 88, A221320173888, A221 320 17 38 88, 221320043880, 221 320 04 38 80, A221320043880, A221 320 04 38 80, 221320043860, 221 320 04 38 60, A221320043860, A221 320 04 38 60, 221320043888, 221 320 04 38 88, A221320043888, A221 320 04 38 88, 221320531360, 221 320 53 13 60, A221320531360, A221 320 53 13 60, 221320531380, 221 320 53 13 80, A221320531380, A221 320 53 13 80, 221320531388, 221 320 53 13 88, A221320531388, A221 320 53 13 88 Specifications Condition: New Fitment Type: Direct Replacement Quantity: 1 piece (for Front Left) Placement on Vehicle:for front left Driver's side Greasable or Sealed: sealed Adjustable: yes Length, width & height (in/cm):33*8*7.9 /84*20.5*20 Weight: 9.1KGStroke:70mm Operating Pressure: ≤2.0 Mpa 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. Please double confirm the compatibility as well as the OEM number before purchasing.2. The best way to check compatibility is to check the Part Number on your old unit.3. Professional installation is recommended.4. If there is any question, please contact us. Warranty: one year warranty for any manufacturing defect