Most of the parts are for the locomotive, Boscastle, which is currently being restored.
On Friday 1st July between 11:30 pm and 3:30 am a storage container at the locomotive repair facility at the Great Central Railway in Loughborough was broken into.
Copper piping, steam boiler valves and fittings were taken from the site and a representative of the railway has estimated the value of the theft to be £50,000.
Most of the parts are for the locomotive, Boscastle, owned by Boscastle Locomotive Ltd which is currently undergoing a significant restoration in the workshops of the Great Central Railway.
A spokesperson from Great Central Railway said: "If anyone has any information, we are hoping to be able to offer a reward for any information that will help us to catch the thieves and retrieve the parts."
Hathern Post Office will close this month
M1 motorway closed following lorry fire
£3m upgrade for Council’s passenger transport fleet
Video technology sees faster treatment for stroke patients in Leicestershire
East Midlands Airport Assisted Travel service wins national award
Man sentenced after Loughborough stabbing left victim seriously injured
