Description Identical replacement part for factory part (OEM: M66-6026).  It is manufactured in the USA from high-quality 304 Stainless Steel. Tube inlet size: 4″ Straight Tube outlet size: 4″ Flare Hose beaded: No Fitting sizes: (1) 1/4″ NPT Base tube dia. 4″ Material: 304 stainless steel