Ordered heating element, thermal cut off kit, thermal fuse, and moisture sensors. This is my 3rd time fixing my Whirlpool Duet Dryer and I was not going to worry about which parts to order. I work out of town and only get home twice a month, so I wanted parts available when I arrived. Installed in about an hour and a half, now dryer is working like new. I would suggest that anyone with a Duet remove bottom cover and clean out excess lint at least yearly to prevent premature failure of parts.