2"mpt threaded tailpiece 417-5140 for split nut. This is a 2 inch buttress thread to 2 inch male pipe threaded tailpiece. Oring/Gasket available separately: 711-4030 o-ring gasket
DISCONTINUED: SEE 400-5161 or 0121108020. DISCONTINUED - see 400-5161 Waterway Brand part discontinued, see MP 0121108020 Split Nut Waterway 2" Heater 415-5161