Febi Bilstein 106602. GLK 280 300 350 3.0, 3.5 2008-2015. SLK 280 300 320 350 3.0, 3.2, 3.5 1996-2011. SLK 55 AMG 5.4 2004-2011. 1 x Sealing Ring between Power Steering Fluid Reservoir and Pump. GL 320 350 420 450 500 550 3.0, 4.0, 4.7, 5.5 2006-2012.