This tool is specifically designed for holding the sprocketchain in place when disassembling the vp44 injection pump and high pressure pump common rail fitted to bmw engines m47 m47t2 m47tu m57 m57tu on bmw 318d 320d e46 1988 2005 and 318td 320td 525d 530d 530 535 e60 e61 2000 2006