This is an Original Thermo King part for type Unit:
KD-II
KD-II MAX met TK3'6'6 Engine
MD-II & MD-II MAX             
MD-II TCI
MD-II TCI-Z                   
SDZ 30 & 50 EEC               
ThermoKing Part Description:
RING SET (standard)
Thermo-King no. 11-6072
Description on packing: 
THermo King
11-6072
STD Ring Set
Made in Japan
Examples and applications or 
Names and unit codes: 
TK11-6072 / TK-116072 / TK.11.6072 / TK116072
MDIITCI
KDIIMAX / KD II MAX / KD-II-MAX / KD2MAX / KD 2 MAX / KD-2-MAX
MD2TCi
MDII / MD II / MDIIMAX / MD II MAX / MD-II-MAX                                                                                                              
KDII / KD II / KD2 / KD 2 / KD-2
MDIITCIZ / MD II TCI Z / MD-II-TCI-Z / MD2TCIZ / MD 2 TCI Z / MD-2-TCI-Z                                                                                    
SDZ30EEC / SDZ 30 EEC / SDZ-30-EEC / SDZ50EEC / SDZ 50 EEC / SDZ-50-EEC                                                                                     
MD-2TCI
HattinkKatwijkInlet pressure Regulator / VALVE throttling / throttlingvalve / throttling valve / Suction Regulator / Regulator Suction / Pressure Valve Regulator / pressure Regulator Inlet / pressure Inlet Regulator  / Valve Pressure Regulator / RegulatorSuction /