The Fimco High Flo 12 V Pump Port Fittings are made of tough poly construction to withstand wear and tear from heavy use and harsh chemicals. Contains part 5168836 with 3/4 in port fitting and 3/8 in hose barb. Built to replace fittings in High Flo 2.1, 2.4, 3.8 and 4.5 gpm Pumps.