Originally Posted by anthonyv62
I'll check them against the originals tomorrow when I take the tires off and do the front brakes. I even checked NAPA and PepBoys and they all look to be the same size bolts in length when I sized them up against the set I got from the Pontiac dealer. Can't these same type measured bolts be purchased - in varying lengths - at a good hardware store as well? They look like the same exact type grade of steel?
As I said in a separate post, I just installed the entire Moog Performance blue urethane kit as it came, including the center bolt, at about $12/kit (one each side). They have a $7 rubber-bushing version as well, but for the SSEi I figured the urethane kit was what should be used, and the old bushings that came off the car were clearly urethane and not rubber.
Anyhow, for the record, the OEM bolts are metric, 9.8 strength, which I think is at least a Grade 5 in standard measurement, although I would suggest Grade 8 to be sure. (According to the manual, most fasteners on the car are either 8.8 or 9.8, with 9.8 being the tougher one.)
(I _think_ a Grade 5 bolt has 3 lines stamped on the head; a Grade 8 has 5.)