In order to know what spare parts are available and compatible with your Shimano Bottom Bracket we will ask for a “BB code”. This denotes the model and series of your Bottom Bracket and allows us to find compatible spares. On most externally splined bottom brackets the code is marked on the outside face, however for press fit bottom brackets you will need to remove the crank arm to see the code.

Outside view of press fit bottom bracket
BB Code (Highlighted in Blue) as seen on the outside of the bottom bracket
 

BB Code (Highlighted in White) as seen on the outside of the externally splined bottom bracket.