Front Lower Lateral Control Arm Left Right for Mercedes GL GLS X166 2012-2019 A1663300107 A1663300207 Front lower lateral control arm (track control arm) for the Mercedes-Benz GL / GLS-Class (X166, 2012–2019) — Left A1663300107 / Right A1663300207 (Mercedes formats 166 330 01 07 / 166 330 02 07). European catalog data confirms the position: Front Axle, Lower, Left / Right, aluminium construction, without ball joint. Catalog fitment covers GL-Class (2012–2015) and GLS-Class