Coolant Expansion Tank Bleeder Screw Brass Most Models for BMW E36 E39 E46 etc.Feature:The product machined from solid billet brassNo more stripping of cheap stock OEM plastic part bleeder screw This is a permanent metal replacement that will last a lifetime.Check with compatible vehicle list below to find compatible for BMW and Mini models for this partIncludes rubber O-ring already installedReplaces for BMW part 17111712788 Free standard shipping anywhere in the United States.This is a must have part for BMW owner Use this brass screw to PERMANENTLY replace the cheap stock plastic bleeder screw that always strips on these vehicles. Don't be left stranded with a stripped screw This brass metal screw will last alifetime Vehicle Fitment:1984 1985 1991 - 1998 318i 1991 - 1997 318is 1995 - 1999 318ti 2000 323Ci 1998 - 2000 323i1998 1999 323is 2001 - 2005 325Ci 1992 - 2005 325i 1992 - 1995 325is 2001 - 2005 325xi 2000 328Ci1996 - 2000 328i 1996 - 1999 328is 2001 - 2005 330Ci , 330i , 330xi 1989 - 1995 2001 - 2003 525i 1993 525iT 1997 - 2000 528i 1994 1995 2001 - 2003 530i 1988 - 1993 535i 1994 1995 1997 - 2003 540i 1995 1997 - 2001 740i 1995 - 2001 750iL , 740iL 1994 - 1997 840Ci 1993 - 1997 850Ci 1994 1995 850CSi 1991 1992 850i 1994 - 2006 M3 1991 - 2003 M5 2004 2005 X3 2000 - 2005 X5 1996 - 2002 Z3 2003 - 2005 Z4.Package included:1 PC Coolant Expansion Tank Bleeder Screw1 PC O-ring