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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Doodle on August 20, 2025, 09:45:20 AM

Title: What is the name of the ABS cap?/nipple? and is it necessary to have?
Post by: Doodle on August 20, 2025, 09:45:20 AM

Hi and hello!
I noticed that my K75 RT (1990) have a rubber cap?/nipple? on the ABS on one side and not the other. I tried viewing diagrams of the ABS but its not on there and I don't know the right term for it so I can't search for it.
I have tried searching for the number on it, but nothing useful comes up.
Dose any one know the name for it or if its necessary to have on?

(https://motobrick.com/gallery/4/8457-200825094420.jpeg)

(https://motobrick.com/gallery/4/8457-200825093714.jpeg)

(https://motobrick.com/gallery/4/8457-200825093809.jpeg)

Title: Re: What is the name of the ABS cap?/nipple? and is it necessary to have?
Post by: frankenduck on August 20, 2025, 10:52:53 AM

Brake bleeder cap.

Not 100% required but its purpose is to keep contaminants out of the bleeder valve.

It's a generic item so you don't necessarily need a BMW one. You do want to get one made for braking systems though to ensure it is resistant to brake fluid.

Title: Re: What is the name of the ABS cap?/nipple? and is it necessary to have?
Post by: Doodle on August 20, 2025, 10:57:08 AM

Thank you, its so hard so find information when you don't know the right name for things.