Mercedes Benz Flywheel Locking Tool For 1.5D 1.6P 2.0P A & B Class - Mercedes Flywheel Locking Tool for Mercedes-Benz - A / B Class and CLA / GLA Designed to fit in place of the starter motor to lock the crankshaft via the flywheel ring gear on the Mercedes-Benz engines. Applicable to : A class / 2013 - 2019 | B class / 2012 - 2019 CLA / 2013 - 2019 | GLA / 2014 - 2020