BMW Final Drive Drain Plug O-Ring 11.2mm x 1.8mmK1600 Models Uses this on the fill and drain for the final drive

2011-2023 K1600GTL

2011-2023 K1600GT

2005-2008 K1200S

2005-2008 K1200R

2007-2008 K1200R Sport

2006-2008 K1200GT

2008-2015 K1300R

2009-2011 K1300GT

2018-2023 K1600B

2018-2023 K1600BGA

2020-2023 R18

2021-2023 R18C

2022-2023 R18TC

2022-2023 R18B

2005-2018R1200GS

2007-2018R1200GSA

2005-2018 R1200RT

2007-2018 R1200R

2015-2018 R1200RS

2019-2023 R1250GS

2019-2023 R1250GSA

2019-2023 R1250RS

2019-2023 R1250RT

2019-2023 R1250R

All R Nine T Models 2014-2023