• Designed for aligning the camshaft, loosen and insert the sprocket, and rotating the crankshaft.
• Helps prevent skipping of the chain during installation. If skipping does occur engine timing will need to be reset.
• Application: BENZ M651/ Models: 204 / 639 / 906.
• BENZ OEM no. ref.: 60831800, 60831830, 60831820, 60831810