Product review (5 stars): Buy this kit, D.I.Y., and save some $.
An appliance repair company offered a "Dryer Tune Up" using the same exact parts for $120.  A local chain store wanted $40ish for this same exact kit.  After seeing those prices I thought i would buy this and give it a go myself.  This is a great OEM kit.  It includes the instructions, and is very easy to install.  If you know which end of a screwdriver to use you should have no problem at all installing the parts.  My dryer is now quiet as can be, and runs as good as new.  ** Be Warned**  You may want to wear gloves, as you will come across some sharp metal edges on the inside of your dryer.**