Engine Timing Vanos Camshaft Locking Tool Kit for BMW N51 N52 N53 N54 N55 2.5 3.0. Engine Timing Vanos Camshaft Locking Tool for BMW 2.5 3.0 N51 N52 N53 N54 N55 isUsed to install and remove the camshaft & variable camshaft timing unit, aligning timing position of camshaft and crankshaft when replacing or adjusting timing chain/belt and camshaft, check or correct cam timing.
