It's a one piece seal, Marshall is authorizing a claim for it to be replaced. I'm still thinkin it was the shop that screwed it up. I'll wait till I get the old seal out and see if I can tell how it got damaged or what happened. Cause you better believe that if it was indeed the shop's mistake that they'll hear about it. After getting it back from the shop I was missing valve cover studs, all my sensor wires were a mess. They were tangled and dangling and not all of them were plugged in. My primary o2 sensor hadn't been installed, they way overfilled my tranny so I was driving down the highway only to look in my rear view mirror to see a giant white smoke cloud trailing behind me. They didn't use any threadlocker on my header so it loosened up and blew out the gasket that I specifically told them to soak in water before installing, which they didn't do either. And to top things off, they bolted my intake manifold on top of the alignment studs causing my motor to fire on about three cylinders which took me HOURS and HOURS to diagnose. Oh, and it took them about a month and a half to do the swap.