Canton Racing 22-620 Oil Filter (Aluminum Remote Mount Small Block Chevy Thread Filter), 1 Pack It is designed for use in high performance applications Includes two 1/2" NPT in-ports and two 1/2" NPT out-ports It can be plumbed right to left or left to right, for many plumbing options Made In USA Unused ports can be used for a temperature or oil pressure sender, or for Accusump input