How do I replace a terribly moldy boot gasket from my Bosch washer?

I have a Bosch Nexxt Essence front loading washer with a terribly moldy boot gasket that I just wish to discard and replace... rather than try to clean. I have already purchased the boot gasket (part # 667489) & clamps (parts # 962458 and 962459). Is this a repair that can be done myself or am I asking for trouble by trying to avoid a "professional" ie. costly repair?