98-36138-K001
Everything needed to replace brake line. All necessary hardware included. If you reuse any of the original hardware the new parts can be saved as spares.
I used this to swap an A2 front brake to be a rear brake. I was able to reuse the old banjo bolt and seals so now have extras of those because this kit includes that hardware. Bleeding was quick and easy. Use a bleed cup on the lever and leave it open when reinstalling the caliper bleed screw to minimize air ingress. 10/10 would buy again.
Comes with everything needed to swap the brake hose on A4/A2. The hose is thicker than comparable SRAM/Shimano hoses, so fitment on internally routed frames can be more difficult if the openings are not wide enough.