OEM for what bike? Really, it comes down to pipe fitment and if it has the right angle to bend to lay flat against your bike. Without knowing what it's from so we can look up the dimensions, I have no idea...
Sorry, I misunderstood his question. I read it as he found a random OEM pipe, not one for the FZ8, since they stopped making the FZ8 in 2013 in the US. Thanks for being so nice with your reply.