BMW M52tu/M54/M56 Master Camshaft Alignment Timing Tool with Double Vanos Master tool set contains a comprehensive set of tools to perform camshaft + VANOS timing on M52TU, M54, M56 Engines. The tools are also applicable for camshaft timing on non-VANOS engines (M42, M44, M50, M52, MS50US and S52US). The kit includes the following: KTC-B1121 BMW Double VANOS Camshaft Alignment Tool: This five-piece kit contains all the tools necessary to assemble and time the VANOS cam-timing units on BMW M52TU, M54 and M56 6-cylinder engines utilized from 1998 onwards. Pieces included: Alignment jig (large aluminum item in photo), Sprocket assembly jig Rigid chain tensioner (cylindrical black / threaded item in photo), Chain tensioner lock pin, and VANOS compressed air connector (top right of case in photo). KTC-A1137 BMW VANOS Sprocket Wrench M50 M52 S50 S52: Special wrench designed specifically to turn camshaft sprockets when removing or installing the VANOS variable valve timing unit. KTC-A1033 BMW 4 &amp; 6 Cylinder Camshaft Alignment / Timing Tools: This tool kit contains all the necessary, engine-specific tools to time the camshafts in BMW M42, M44, M50, M52, M52TU, M54, M56, MS50US and S52US engines. Includes: Camshaft alignment jig to fix the camshafts in the proper orientation during assembly and Top dead center pin to align the flywheel at the TDC position.