Petrol tap, pull on push off, 3/8 inch BSP thread to 7/16 Gas ( UNF) (20tpi), inbuilt filter, no inner tube. Use part BT-IF014403 -for EM351 for output hose connector. Early BSA Bantam, C15, B40 etc Fitted to BSA and Ariel OEM 67-8092; 678092 OEM 5050-54A
