Replacement unloader, trapped pressure type. Built-in with EZ start valve, eliminates back pressure in system when pulling a manual start engine. With internal by-pass system, pressure adjustable. Quick disconnect outlet built-in with chemical inject, stainless steel banjo bolt, swivel inlet hose connector with in-line filter.
Works on Comet ZWD Series, Cat 5CP, 5DX, 6DX, and many more!