Product review (4 stars): I am happy.. I strongly suggest to do this as ...
Pro:
My washer has new gasket!!! and it's clean.  I have Bosch Nexxt 500plus.

Cons:
if you have not done this by yourself before, it's definitely very challenging.  I ended up calling an appliance handyman and cost me 200 bucks and bunch of scars and cuts in my forearm..

Well, I have cleaner washer!!  I am happy..
I strongly suggest to do this as well while replacing the gasket.
http://www.amazon.com/Bosch-644226-Deflector-for-Washer/dp/B004XLDUAE?ie=UTF8&redirect=true&ref_=cm_cr_ryp_prd_ttl_sol_16