Bc9107 was built at the Otahuhu workshops in Auckland in 1964 as a bulk cement wagon. The wagon uses Interconsult silos imported from Sweden. It is now the only one of its type left of the 18 that were built, and one of 3 4wheel cement wagons preserved. After being withdrawn in 1989, 9107 languished at Hutt Workshops long enough to be preserved by the Pahiatua Railcar Society. Here the silos were removed from the underframe and the flat deck used for storing the cab from R.M.119. 

In 2019, 9107 was moved by road to SSR as part of a deal which saw R.M.34 exchanged for 3 goods wagons. It is now stored undercover with several new parts already fabricated for its restoration.