ApplicationCompatible for Mercedes Benz S-Class W221Compatible for Mercedes S350 Bluetec 4Matic Sedan 4-Door 3.0L 2012-2013Compatible for Mercedes S450 4Matic Sedan 4-Door 4.6L 2008-2011Compatible for Mercedes S550 4Matic Sedan 4-Door 4.6L 2012-2013Compatible for Mercedes S550 4Matic Sedan 4-Door 5.5L 2007-2011Compatible for Mercedes Benz CL-Class C216Compatible for Mercedes CL550 4Matic Coupe 2-Door 4.6L 2011-2013Compatible for Mercedes CL550 4Matic Coupe 2-Door 5.5L 2009-2010For S-Class Vehicles With 4MATIC (AWD) Suspension Only.NOT fit on Vehicles with Base RWD or ABC Suspension ModelsSpecificationsCondition: Brand NewFitment Type: Direct ReplacementQuantity: 1 piece (for front Right )Placement on Vehicle:for front right Passenger\'s sideGreasable or Sealed:SealedAdjustable: yesLength, width and height (in/cm): 33*8*7.9 /84*20.5*20Weight: 9.23kgStroke:70mmOperating Pressure : ≤2MPaTemperature range：+70°、-40°Reference OE/OEM Number2213200538,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 0538,221-320-05-38Features1. 100% Air Tightiness testing2. 24 hours air tightness test ≤0.02MPa3. Anti-corrosion and provide a more consistent wear surface4. Built to strict quality control standards5. CNC Machined Components6. Designed for Comfort Suspension7. Direct replacement for OEM strut without modification8. Easy to install9. Eliminating abnormal sound10. Gives the driver more control of ride11. Good heat dissipation12. It has a high compressive strength and good sound insulation to ensure our driving comfort and safety13. Restore the original ride height and improve ride quality14. Test more than 3 million times15. Sturdy & Durable MaterialNotice1.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 unit3.Professional installation is recommended.