This is the complete wet-end assembly for the Chugger Brew Pump. Stainless steel construction means that this is going to be the last head you buy for your pump. If you have ever cross-threaded or snapped the threads off of a plastic head pump (which is probably why your looking at this!), The Stainless Chugger Head is the end-all solution for these problems.,,This pump head works for all of the chugger lineup, and also as a replacement / upgrade for our H315 March Pumps (March Part # 815-PL)!