Prussian G 5.4

{{more citations needed|date=December 2021}}

{{Infobox locomotive

| name = Prussian G 5.4
DRG Class 54.8–10

| bgcolor = 000000

| color = FFFFFF

| builddate = 1901–1910

| totalproduction = 767

| whytetype = 2-6-0

| gauge = {{track gauge|sg}}

| leadingdiameter = 1,000 mm

| driverdiameter = 1,350 mm

| over bufferbeams = 16,168 mm

| axleload = 15.3 t

| serviceweight = 55.1 t

| weightondrivers = 44.0 t

| fuelcap =

| watercap = 12.0/15.0 m³

| boilerpressure = 12 bar

| fireboxarea = 2.29 m²

| evaporativearea = 137.00 m²

| cylindercount = 2

| cylindersize = 500/750 mm

| pistonstroke = 630 mm

| maxspeed = 65 km/h

| indicatedpower = 574/750 kW

| fleetnumbers = DRG 54 801–981, 985-1079, 1083, 1084

| retiredate = 1948

}}

The Prussian G 5.4 was a German goods train locomotive with a compound engine. Due to its top speed of 65 km/h it was also used on passenger services. The G 5.4, like the G 5.3, differed from the G 5.1 and G 5.2 in having a shorter wheelbase and higher boiler pitch. In addition, the Krauss-Helmholtz bogies enabled its riding qualities to be improved, especially at higher speeds. Between 1901 and 1910 a total of about 760 vehicles of the Class G 5.4 were built for the Prussian state railways. The last 25 locomotives were fitted once again with an Adams axle (see Prussian G 5.5).

Other railways companies also procured this class:

• Hafenbahn Frankfurt/M: 3 units in 1908, which were taken over by the Prussian state railways in 1910.
• Royal Prussian Military Railway: One locomotive in 1905, taken over by the Prussian state railways in 1919.
• Lübeck-Büchen railway: Three locomotives in 1906 and 1909, retired by 1936.
• Grand Duchy of Mecklenburg Friedrich-Franz Railway: Nine locomotives, actually G 5.5s, see Mecklenburg G 5.4.
• Imperial Railways in Alsace-Lorraine: Three locomotives in 1912, G 5.5, see Alsace-Lorraine G 5.5.

In 1923 the Reichsbahn took over 371 locomotives into its renumbering plan as 54 503-517 and 54 801-1156; in 1925 another 278 vehicles were incorporated as 54 801–981, 985-1079, 1083 and 1084. Some 22 examples were converted during the 1920s to superheated compounds. During the Second World War a number of G 5.4 and G 5.5 came into the Reichsbahn fleet from Poland and Lithuania as 54 1101-1218 and 54 1220-1223. The last G 5.4 in Germany was retired by 1951.

The vehicles were coupled with Prussian tenders of classes pr 3 T 12 or pr 3 T 15.