The South Australian Railways broad gauge Ga class was acquired upon takeover of the Glenelg Railway Company by the South Australian Railways.
| Class: | Ga | |
| Builder: | Robert Stephenson & Co. - Newcastle on Tyne, England | |
| Introduced: | 1899 | |
| Number in Class: | 1 | |
| Wheel Arrangement: | 4-4-0 tank (2′B T) | |
| Driving Wheel Diameter: | 4 ft. 0 in. | |
| Cylinders: | Number: | 2 |
| - | Position on frame: | Outside |
| - | Diameter x stroke: | 11 in. x 18 in. |
| Heating Surface: | Tubes: | 547 square feet |
| - | Firebox: | 56 square feet |
| - | Grate Area: | 10.5 square feet |
| Boiler Pressure: | 130 lbs p.s.i. | |
| Tractive Effort: | 7,181 lbs | |
| Coal Capacity: | 16 cwt | |
| Water Capacity: | 460 gallons | |
| Weight in Working Order: | 29 tons | |
"Robert Stephenson & Co. - Newcastle on Tyne, England" built 4-4-0 tank type broad gauge steam locomotive.
| 1874 | Entered service on Adelaide Glenelg & Suburban Railway Company as "No.3". Built by Robert Stephenson & Co., builders No.2213. [nrm] |
| 11.1881 | Sold to Glenelg Railway Company, became their "No.3". [nrm] |
| 16.12.1899 | Entered service as "Ga 157" on South Australian Railways following purchase of Glenelg Railway Company. [nrm] |
| 11.1902 | Rebuilt [nrm] |
| 5.1915 | Condemned [nrm] |
| 1922 | Scrapped [nrm] |
