If it was necessary to remove and replace the inner boot in order to disassemble the shaft, it makes since to renew it as well.

CV joints need to be securely sealed to retain vitally important grease and to keep dirt and moisture out. Each joint is encased in a ribbed and flexible rubber boot. It is not unusual to find a ...

What SuperDave said.<BR><BR>Replace the boot will work, but make <I>absolutely sure</I> you get all the old grease out, and have perfectly clean cv joints. Re-pack them and put the new boot on.