JZ Block Oil Adapter Pipe 3/4"-16. We often get requests to sell the adapter pipe from our JZ oil cooler kits by itself, so now we do! These pipes are US made on a CNC lathe using DOM steel for extreme strength and accuracy. The shorter length pipe is for the JZ block when removing the stock oil cooler assembly and replacing it with a oil outlet adapter, the longer one is for the JZ oil cooler kits we offer with a thermostat/oil outlet plate that goes directly on the block. These pipes have 3/4"-16 full length threads, so there are many other applications that it would work with, as this is a common thread size for oil filters. Price is for ONE threaded pipe alone.