Check the listing for details. Diesel Fuel Filter Base Mount Priming Primer Pump 3/8" NPT Threaded 1-14 Spin On. Condition: New. Listed at 23.79 USD. Diesel Fuel Filter Mounting Head 1-14 UNF Thread Remote Filter Mount With Primer Pump Diesel Fuel Filter Mounting Head 1-14 Center Thread Diesel Fuel Filter Mounting Head Description AWESOME Price On A Brand NEW Diesel Fuel Filter Mounting Head. Features: 4x 3/8" NPT Threaded Fuel Ports 2 Inlet Ports and 2 Outlet Ports Allow You To Connect Multiple Fuel Filters In Series or Parallel and You Can Have Fuel Enter or Exit From Either Side. 2 Plugs Are Included In Case You Do Not Need The Extra Ports. 1/4" NPT Threaded Test Port Can Be Used To Bleed Air, Test For Fuel Flow, Or Add A Gauge To Know When Its Time To Change The Filter. A Plug Is Included If You Do Not Want To Use This Port. 1-14" Center Thread For Spin On Filter.