Moroso cast aluminium remote filter heads allow the engine oil filter to be re-located. They have 1/2 NPT threaded inlet/outler ports and also incorporate an additional 1/2 NPT threaded auxilliary port to provide additional oil feeds or to allow pressure or temperature sensors to be fitted. They are designed to accept 13/16-16 UNF threaded oil filters with a sealing ring diameter of 3.25"
Version refers to direction of oil flow when viewing the filter head from the front.