Oil tank outlet (feed) union with 1/4inch BSP outlet, no gauze. Suit Nortons. Brass nickel plated, thread OD 1 inch x 20tpi, 1/4 inch BSP male outlet. Will fit all Norton oil tanks back to the 20s and to 1978. Use BT-3589 for the union washer.Original Part Number:D12/292; L4/292; 19379; 25348 - Oil tank union with gauze3588; A2/292; A22/292; E2/292; 14329; 14375; 18347;19379; E6621; L4/292 - singles