Introduction: This comprehensive set of tool enables the correct timing position to be achieved on the both camshaft and crankshaft whilst replacing the timing belt or the chain on the both petrol and diesel engines. Include a special wrench for controlled turning of the exhaust camshaft sprocket when removing and installing the VANOS unit, and also include the primary timing chain pre - load tool for tensioning the timing chain on M50, M52, M42 and M60 engines. Application: M22 Threaded for M42/M60 engine; M26 Threaded for M50/M52 engine