For anyone who wanted to know for sure and for the few that said they were not. The squirters for B16 are the same as B18. The Oil Jets in my B18C1 got mangled by a shitty machine shop. It was $20 apiece for Acura ones or $11 for Civic Si. Part numbers are almost the same 15280-P72-000 or 15280-P72-000. They bolt right in and appear to be the same other than the metal used in the tube of the Si one is a copper color.