New Honda WT40XK3A 4" Trash Pump for Sale. Heavy-duty 4" construction trash pump Centrifugal self-priming 423 gal/min capacity Easy-starting Honda GX390 OHV commercial-grade engine, Silicon carbide mechanical seal Heavy-duty full frame protection Solid handling up to 1 1/16" Easy to use quick clean out port Standard strainer and service tool Easy to service impeller wear plate Protected by Honda Oil Alert Tag: gp1, pump1