Built in 1968 by A and G Price in Thames #221 is a 0-6-0 diesel hydraulic shunting locomotive. 221 was built for use at the New Zealand Steel mill at Glenbrook south of Auckland. Powered originally by a 315hp Rolls Royce engine it is now powered by a similar horse power Perkins unit. Used at the steel mill up until 2000, a damaged final drive saw the locomotive withdrawn from service.

221 was originally offered to the Glenbrook Vintage Railway however they did not want it and in turn it was offered to the Silver Stream Railway. Moved by road to the Silver Stream site it was unloaded with the help of our Ransomes and Rapier steam crane. A replacement final drive part was fitted and the loco was returned to active duty. Proving to be very useful at the railway, 221 is currently employed on everything from shunting duties to work trains.