On Aug 3, 5:32*pm, wrote:
My wife has a KitchenAid Professional 600 watt stand mixer.
I started giving her poor performance and making a clunking sound, so
I opened it up.

For such a beefy machine, the transmission housing is plastic! *It's
all cracked to hell. *And unfortunately, the worm gear is stripped.

I found the parts at Sears: $13 for the housing, but $30 for the gear.
I hate to spend $50 with shipping to get another plastic housing.
Anyone know of a cheaper source?

I don't know if this is the same mixer that you have, but it shows a
metal housing, and it's 2.5 times the price.
http://www.goodmans.net/get_item_ka-...-gear-hous.htm

R