This is an Original Thermo King part for type Unit:
AT11                          
AT12                          
C201 Diesel Engine            
CG-II
CG-II HTP ©                   
CG-II M12 voor Sea Container  
CG-II M12B & M12C             
CG-II M17, M17A & M17B        
CG-II M19                     
CG-II M20                     
CG-II M21 Special Prepared
CG-II M22, M22D, M22E         
CG-II M22C                    
CG-II M22F voor Crowley       
CG-II M23                     
CG-II M30
CG-II M30A
CG-II M30B
CG-II M30C voor Crowley       
CG-II M30D                    
CG-II M323A                   
CG-II M324                    
CG-II M330A                   
CG-II M364                    
CG-II M40                     
CG-II M445                    
CG-II M7 voor CGM             
CG-II M7A voor CGM            
CG-II M8A & M8B               
CGS M329, M329A, M329B        
CGSM                          
CROWN 500 M19                 
D1 met di2'2 Engine           
D1 Series                     
di 2.2 Engine                 
McTRL-I 30, 50 & 30 TC        
NSD-II M3 Series              
R6-M5                         
RC-II & RC-III                
RMN-II SR                     
RMU                           
RMU-II                        
RMU-II M10 RMUE-II M5         
SB Classic                    
SB-100 30                     
SB-190 30
SB-I 1200                     
SB-I 2000                     
SB-I HPO                      
SB-II & SB-III SLE 30 & 50    
SB-II 50 TC                   
SB-II with D'201
SB-III 50 MAX met se2'2 Engine
SB-III 50 TC2 met di2'2 Engine
SB-III 640 TC met di2'2 Engine
SB-III HTP-©                  
SB-III Mt met D2'0'1          
SB-III S SR met se2'2 Engine  
SB-III S+ met se2'2 Engine    
SB-III SLE EEC met D2'0'1     
SB-III SLE Max EEC met D'2'0'1
SB-III SR met D2'0'1          
SB-III SR MP IV Met D2'0'1    
SB-III SR MP+ met D2'0'1      
SB-III TG VI EEC met D2'0'1   
SD-I 1012 M1                  
se 2.2 Engine                 
Sentry 1500 met C2'0'1        
Sentry 3000 met C2'0'1        
Sentry di                     
Sentry di voor luchtmacht     
Sentry II MAX met se2'2 Engine
Sentry II MAX TC met D2'0'1   
Sentry MAX met di2'2 Engine   
SGCM                          
SGSM                          
SMX                           
SMX 50 TCI                    
SMX SR                        
SMX-II 50 SR TCI
SMX-II SR & TG VI             
SPECTRUM Super-II TCI         
Super NWD 5200                
Super NWD 5300                
Super-II 190 30 SR+ MP VI
Super-II 30 SR met 2.2 Engine 
Super-II H.TP©                
Super-II MAX met 2.2 Engine   
TK6000 30 met se2'2 Engine    
XNWD 30 5100 & 5200           
ThermoKing Part Description:
NUT
NUT - connecting rod
Thermo-King no. 55-5251
Description on packing: 
55-5251
Nut Conn
Made in Japan
Examples and applications or 
Names and unit codes: 
TK55-5251 / TK-555251 / TK.55.5251 / TK555251 / TK55-5251TKA / TK-555251TKA / TK.55.5251TKA / TK555251TKA
SMXIISR / SMX II SR / SMX-II-SR / SMX2SR / SMX 2 SR / SMX-2-SR / SMXIITGVI / SMX II TG VI / SMX-II-TG-VI / SMX2TGVI / SMX 2 TG VI / SMX-2-TG-VI             
CGIIM12/CG2M12/CG-2M12                                                                                                                                      
RMUII / RMU II / RMU2 / RMU 2 / RMU-2                                                                                                                       
SBClassic                                                                                                                                                   
CGIIM40 / CG II M40 / CG-II-M40 / CG2M40 / CG 2 M40 / CG-2-M40                                                                                              
SBIII640TC / SB III 640 TC / SB-III-640-TC / SB3640TC / SB 3 640 TC / SB-3-640-TC                                                                           
SMX50TCI / SMX-50-TCI                                                                                                                                       
HattinkThermo-PartsMcTRLI50 / McTRL I 50 / McTRL-I-50 / McTRL150 / McTRL 1 50 / McTRL-1-50                                                                                     
@HTPSentryIIMAXTC/Sentry2MAXTC                                                                                                                                  
CGIIM324 / CG II M324 / CG-II-M324 / CG2M324 / CG 2 M324 / CG-2-M324                                                                                        
Sentrydi                                                                                                                                                    
SGSM                                                                                                                                                        
HattinkThermo-Parts.ComCGIIM17 / CG II M17 / CG-II-M17 / CG2M17 / CG 2 M17 / CG-2-M17 / CGIIM17A / CG II M17A 
SB190
SBIII50 / SB III 50 / SB-III-50 / SB350 / SB 3 50 / SB-3-50 
SB-II/SB 2/SB II/SB 2
SuperNWD5200 / Super NWD 5200                                                                                                                               
Sentry1500 / Sentry-1500                                                                                                                                    
SBIIISRMP+/SB3SRMP+/SB-3SRMP+                                                                                                                               
SuperII 190 30 SR+ MP VI / Super II 190 30 SR+ MP VI
NSDIIM3Series / NSD II M3 Series / NSD2M3Series / NSD 2 M3 Series / NSD-2-M3-Series                                                                         
CGIIM7/CG2M7/CG-2M7                                                                                                                                         
SB10030 / SB 100 30 / SB-100-30                                                                                                                             
R6M5 / R6 M5                                                                                                                                                
RMUIIM10 / RMU II M10 / RMU-II-M10 / RMU2M10 / RMU 2 M10 / RMU-2-M10 / RMUEIIM5 / RMUE II M5 / RMUE-II-M5 / RMUE2M5 / RMUE 2 M5 / RMUE-2-M5                 
SentryMAX                                                                                                                                                   
CGSM                                                                                                                                                        
CGIIM20 / CG II M20 / CG-II-M20 / CG2M20 / CG 2 M20 / CG-2-M20                                                                                              
SBIIISR/SB3SR/SB-3SR                                                                                                                                        
@HTPTK600030 / TK 6000 30                                                                                                                                       
CGIIM445 / CG II M445 / CG-II-M445 / CG2M445 / CG 2 M445 / CG-2-M445                                                                                        
SuperNWD5300 / Super NWD 5300                                                                                                                               
D1                                                                                                                                                          
SBII50TC / SB II 50 TC / SB-II-50-TC / SB250TC / SB 2 50 TC / SB-2-50-TC                                                                                    
CGIIM7A/CG2M7A/CG-2M7A                                                                                                                                      
C-201 / C 201                                                                                                                                               
SBIIISSR / SB III S SR / SB-III-S-SR / SB3SSR / SB 3 S SR / SB-3-S-SR                                                                                       
SMX                                                                                                                                                         
SBII / SB II / SB2 / SB 2 / SB-2 / SBIII / SB III / SB3 / SB 3 / SB-3 SLE /SB3SLE/SB3 SLE/SBIII SLE/SB-III SLE
Super Bosch Twee
HattinkThermo-Parts.nlCGIIM30D / CG II M30D / CG-II-M30D / CG2M30D / CG 2 M30D / CG-2-M30D                                                                                        
CGIIM23 / CG II M23 / CG-II-M23 / CG2M23 / CG 2 M23 / CG-2-M23                                                                                              
CGSM329 / CGS-M329 / CGSM329A / CGS-M329A / CGSM329B / CGS-M329B                                                                                            
CGIIM12B / CG II M12B / CG-II-M12B / CG2M12B / CG 2 M12B / CG-2-M12B / CGIIM12C / CG II M12C / CG-II-M12C / CG2M12C / CG 2 M12C / CG-2-M12C                 
SPECTRUMSuperIITCI / SPECTRUM Super II TCI / SPECTRUMSuper2TCI / SPECTRUM Super 2 TCI / SPECTRUM Super-2 TCI                                                
                                                                                                                                                            
RMU                                                                                                                                                         
SuperIIMAX / Super II MAX / Super-II-MAX / Super2MAX / Super 2 MAX / Super-2-MAX                                                                            
SB3TG/SB-3TG/SBIIITG                                                                                                                                        
SBIII50TC2 / SB III 50 TC 2 / SB-III-50-TC-2 / SB350TC2 / SB 3 50 TC 2 / SB-3-50-TC-2                                                                       
@HHSBIIISLE EEC/SB3-SLE/SB-III-SLE/SB-3SLE EEC                                                                                                                 
SMXII50SRTCI / SMX II 50 SR TCI / SMX-II-50-SR-TCI / SMX250SRTCI / SMX 2 50 SR TCI / SMX-2-50-SR-TCI
SGCM                                                                                                                                                        
HattinkHeeschCGIIM19 / CG II M19 / CG-II-M19 / CG2M19 / CG 2 M19 / CG-2-M19                                                                                              
RCII / RC II / RC2 / RC 2 / RC-2 / RCIII / RC III / RC3 / RC 3 / RC-3                                                                                       
CGIIM323A / CG II M323A / CG-II-M323A / CG2M323A / CG 2 M323A / CG-2-M323A                                                                                  
CGIIM22C / CG II M22C / CG-II-M22C / CG2M22C / CG 2 M22C / CG-2-M22C                                                                                        
CuijkHattinkSB3SRMPIV/SBIIISRMPIV                                                                                                                                       
Sentry3000 / Sentry-3000                                                                                                                                    
Hattink Heesch.nlSBII/SB-2/SB II/SB2
SuperII30SR / Super II 30 SR / Super-II-30-SR / Super230SR / Super 2 30 SR / Super-2-30-SR                                                                  
SBI2000 / SB I 2000 / SB-I-2000 / SB12000 / SB 1 2000                                                                                                       
SDI1012M1 / SD I 1012 M1 / SD11012M1 / SD 1 1012 M1 / SD-1-1012-M1                                                                                          
 CG-II-M17A / CG2M17A / CG 2 M17A / CG-2-M17A 
Hattink Heesch.comAT-12 / AT 12 / AT12                                                                                                                                        
SMXSR / SMX-SR                                                                                                                                              
RMNIISR / RMN II SR / RMN-II-SR / RMN2SR / RMN 2 SR / RMN-2-SR                                                                                              
Hattink Heesch.nlCGIIM30C/CG2M30C/CG-2M30C                                                                                                                                   
SBIIISLEMax SB III SLE SBIII-SLE SBIIIMax                                                                                                                   
D1Series                                                                                                                                                    
CGIIM364 / CG II M364 / CG-II-M364 / CG2M364 / CG 2 M364 / CG-2-M364                                                                                        
XNWD30 / XNWD5100 / XNWD5200                                                                                                                                
SB-3/SB3/SBIII MultiTemp/Multi-Temp                                                                                                                         
 CG-II-M22D / CG2M22D / CG 2 M22D / CG-2-M22D
SentryIIMAX / Sentry-II-MAX / Sentry2MAX / Sentry 2 MAX / Sentry-2-MAX                                                                                      
Super Bosch 2
SB II/SB-2/SB II/SB-2
@HTPCGIIM22 / CG II M22 / CG-II-M22 / CG2M22 / CG 2 M22 / CG-2-M22 / CGIIM22D / CG II M22D
CROWN500M19 / CROWN-500-M19                                                                                                                                 
@HHSentryDi/Sentry-di                                                                                                                                          
SBIIIS+ / SB III S+ / SB-III-S+ / SB3S+ / SB 3 S+ / SB-3-S+                                                                                                 
SB3SR/SB-3SR/SBIIISR                                                                                                                                        
CGIIM8A / CG II M8A / CG-II-M8A / CG2M8A / CG 2 M8A / CG-2-M8A / CGIIM8B / CG II M8B / CG-II-M8B / CG2M8B / CG 2 M8B / CG-2-M8B                             
CGIIM330A / CG II M330A / CG-II-M330A / CG2M330A / CG 2 M330A / CG-2-M330A                                                                                  
SB twee/SBtwee
AT-11 / AT 11                                                                                                                                               
CG2M22F/CG-2M22F/CFIIM22F                                                                                                                                   
Super Bosch II
SBI1200 / SB I 1200 / SB-I-1200 / SB11200 / SB 1 1200 / SB-1-1200                                                                                           
CGIIM21 / CG II M21 / CG-II-M21 / CG2M21 / CG 2 M21 / CG-2-M21 Prepared for APL