Boulons de culasse

These head bolts come in 2 plastic bags inside a box. If you open the box, you can't return it, but I would recommend opening the box ahead of time to make sure you have a suitable 1/2" drive deep socket (15mm in my case), or better yet, also have a spare socket on hand, in case you break one. Trust me, it sucks to break a socket when you're almost finished torquing down head bolts, and then have to WALK to the store to replace the socket. Also have a tap and die set, and a whole box of Q-tips and acetone on hand, to gently clean the bolt hole of debris, before installing the head bolts. I think some people recommend applying some kind of oil on the bolts before installing, to get a proper torque reading. I installed these bolts dry, and only learned about the oil after the fact. Might want to double-check this if I ever have to do this kind of repair again. In any case, the extra 90 degrees turn of the head bolts after reaching the specified torque would probably cover you anyways. 1,000 kms after the repair and no leaks, so the head bolts seem to be holding. Head bolts aren't cheap, but for a non-pro like me, this job took 40 hours. Definitely didn't want to reuse the old head bolts. It's generally recommended to use new head bolts when doing this job.