General description These rear air suspension springs are designed for various models of Mercedes-Benz, providing a direct replacement for the original air shocks. They are brand new and come in a quantity of two, suitable for either the left or right rear side of the vehicle. Technical specifications Stroke: 140mm ± 25mm Length: 35 cm (13.8 inches) Width: 33.5 cm (13.2 inches) Height: 7 cm (2.8 inches) Weight: 3.89 kg Temperature Range: ≥ -40℃ / ≤ 70℃ Greasable or Sealed: Sealed Compatibility and accessories Mercedes-Benz GL-Class X164 (2006-2012) Mercedes-Benz GL-Class X166 (2012-2019) Mercedes-Benz M-Class W164 (2005-2011) Mercedes-Benz M-Class W166 (2011-2018) OE/OEM Numbers: A 164 320 02 25, 1643200225, A 166 320 03 25, 1663200325, A 164 320 04 25, 1643200425, A 164 320 06 25, 1643200625, A 164 320 07 25, 1643200725, A 164 320 08 25, 1643200825, A 164 320 09 25, 1643200925, A 164 320 10 25, 1643201025, A 166 320 03 25, 1663200325, A 166 320 06 25, 1663200625 Installation