If you're changing the timing chain, tensioner, or removing the head on your 2.2 ECOtec get this kit. As long as you don't mess up the timing cover gasket, this kit has everything you'll need down to the torque-to-yield cam bolts. I wasn't sure about getting this kit as I wasn't 100% if i'd need new cam bolts or the gears - I was trying to do this repair as cheap as possible. Once I got into the motor I found you will definitely need new cam bolts as you'll need to unbolt the gears to have enough clearance to feed the new timing chain into the motor. The OEM bolts are torque-to-yield, as in they are one time use only. This kit also includes the newer style hydraulic tensioner and includes the updated oiler to ensure the timing set gets proper lubrication so you won't have the problems the early 2001s ECOtec's had with eating timing sets. I am glad I decided to go with the right (complete) kit.
Not completely related to the kit but these 2.2 eco's are very easy to time, line up three marks and done. Definitely one of the easier OHC motors I've worked on. HOWEVER, the new crank gear doesn't have a clear timing mark like the OEM one had. To make sure I was looking at the correct mark I had to slip the old crank gear on in front of the new one. I am not sure if it was my kit just didn't get marked or if all are like that. So save your old parts as you remove them just in case until after you're finished.
Posted by Michael (Gettysburg, PA) / April 13, 20142010 Chevy Cobalt