ApplicationCompatible for MERCEDES-BENZVIANO W639 2003-2014 compatible for MERCEDES-BENZVITO Bus W639 2003-2014 compatible for MERCEDES-BENZVITO / MIXTO Box W639 2003-2014 compatible for MERCEDES-BENZVITO Box W447 2014 -OE/Part numberA6393280101, 6393280101 A6393280201, 6393280201 A6393280301, 6393280301SpecificationPart Type : Air Suspension Spring Placement on Vehicle : Rear left or right Fitment Type: Direct Replacement Greasable or Sealed: Sealed Modified Item : No Upper Mounting Isolator Included : No Isolator Required Lower Mounting Isolator Included : No Isolator Required Stroke:200mm Operating Pressure : ≤2.0Mpa Temperature range：≥-40℃/≤+ 70℃ Dimension: 23x12x12 cm Weight: 1.4kgFeature1. 100% Air Tightiness testing 2. 24 hours air tightness test ≤0.02MPa 3. Mates with OE Air Lines 4. Built to strict quality control standards 5. Direct replacement for OEM spring without modification 6. Easy to install.Direct replacement. 7. Eliminating abnormal sound 8. Safe carrying capacity and stability 9. High-quality materials according to OE specifications, for high load capacity and long service life 10. It has a high compressive strength and good sound insulation to ensure our driving comfort and safety 11. Restore the original ride height and improve ride quality 12. Test more than 3 million times