General description This Air Suspension Compressor Pump is designed specifically for Mercedes Benz M Class and GL Class vehicles, providing a reliable replacement for your original air shock. It is an aftermarket product that ensures optimal performance and durability. Technical specifications Condition: New Warranty: 2 years Part / OEM Numbers: 1663200104, 1663200204, A1663200104, A1663200204 Compatibility: For Mercedes Benz M Class W166 (2011-2015) and GL Class X166 (2012-2016) Installation Professional installation is recommended. Instruction manual is not included. Usage Replace the original air shock with this aftermarket air suspension compressor pump. Please double-check compatibility and OEM number before purchasing.