Triumph Pre-Unit Early Transmission Plug T400 pre-51

Perfect condition, thread fit and finish are perfect, guaranteed or your money back.  CNC machined from aluminum billet.  Not cast.  Amazing quality!!  

Triumph's old part number is T400 (57-0400) for the transmission filler plug.  These parts should suit the transmission of Triumph pre-unit machines until 1951, and hasn't been available in YEARS. It will NOT fit later cases with the raised cheek next to the plug bore.