Engine timing chain tensioner with ring for use on vehicles equipped with N45, N46, M43, N42, N20, E46, E90, E91, E92 engine models.Compatible with various 1 Series, 3 Series, 5 Series, X1, X3, and Z4 models within specified production years.Fits 1 Series E82 Coupe 120i 2009–2013, E87 116i 2004–2011, 118i 2004–2011, 120i 2004–2011, E88 Convertible 120i 2008–2013, F20 125i 2011–2016.Fits 3 Series E36 Compact 316i 1995–2000, E46 Compact 316ti 2001–2005, 318ti 2002–2004, Coupe 318Ci 1999–2006, Sedan 316i 1998–2002, 318i 1997–2005, E90 Sedan 318i 2005–2007, 320i 2004–2011, E91 Touring 320i 2005–2012, E92 Coupe 320i 2007–2012, E93 Convertible 320i 2007–2012, F30/F80 Sedan 320i 2012–2018, 328i 2011–2018, F31 Touring 328i 2012–2015.Fits 5 Series E60 Sedan 520i 2007–2010, F10 Sedan 520i 2011–2015, 528i 2011–2015.Fits X1 E84 sDrive18i 2010–2015, sDrive20i 2011–2015, xDrive28i 2011–2015.Fits X3 E83 SAV 2.0i 2005–2011, F25 SAV xDrive20i 2011–2017, xDrive28i 2012–2017.Fits Z4 E89 Roadster sDrive20i 2011–2016, sDrive28i 2011–2016.