SAAB 93179223 Hollow hex screw The catalog lists 55184920 as 93179223. Replaced by 93179223 Found in SAAB Ng9-3 2008–2012 Brakes - Wheel bearings - ABS sensors › Master cylinder - vacuum servo · Position 26 SAAB Ng9-5 2010–2011 Brakes › Master cylinder and vacuum servo · Position 15