PART NO.  SPL.PAGE  DESCRIPTION                                                           
AAA628    16.O.2    Connector -oil gauge pipe -(instruments, 1600 and 1600-MK-II) -was
    11G15

AAA628 Connector -oil gauge pipe -(instruments, 1500, 1600, 1600-MK-II) emgine block to fle pipe -(was 11G15)

Alternate numbers:
Moss part number 460-015

Mating thread for these parts is 1/8-BSP (28 threads per inch) The replacement hose from Moss Motors and Limora was reported to be faulty in October/November 2021, having incorrect thread that would not connect to the male threads on the mating fittings.