The class F351 was a 2-4-0T tank locomotive designed for suburban service around Sydney. Very similar to a 1864 design for the Isle of Wight Central Railway, the first twelve were only built by Beyer, Peacock & Co. in 1884 and 1885. These were numbered 351 to 362 and were followed by numbers 363 to 368 built by Henry Vale in 1887. Their drivers had a diameter of five feet and one inch and their cylinders measured 15 by 22 inches. The cylinders and valve gear were both mounted on the inside.

366 was involved in the Redfern collision in 1894 and in 1901, 363 derailed near Sydenham. The second accident was attributed to oscillations at speed, what meant that the F351 was now limited to 30 mph. From now on, they were only used in yards and depots. From 1914, the remaining class members got new boilers. In 1924, they became part of the class X10. By 1940, only three remained in active service. From these, 1042 had the longest life. It was overhauled in 1970 and withdrawn three years later. Today this locomotive and 1033 are surviving on static display.